th international conference on manufacturing process...

Program & Invitation of ICMPT-5 2019

Program of the 5th International Conference on Manufacturing Process Technology

(ICMPT-5 2019)

ICMPT-5 2019Yanbian University, Yanji, China

August 21~24, 2019

Organized byThe Korean Society of Manufacturing Process Engineers(KSMPE)

Yanbian University, Yanji, ChinaHunan University of Science and Technology, China

Invitation

We are pleased to invite you to the 5th International Conference on Manufacturing Process Technology, hosted by the Korean Society of Manufacturing Process Engineers(Korea), Yanbian University(China) and Hunan University of Science and Technology(China) on August 21~24, 2019 at Yanbian University, Yanji, China. This conference is designed to provide a forum for exchanging technical information and sharing experiences for those people from industry, R&D institute and academic communities.

In the conference, renowned researchers and scientists from Korea, China, Canada, Pakistan, Japan, Malaysia, Singapore, Australia, and United Kingdom will address the recent advances in manufacturing process technology, including the cutting work special process, precision machining and machine tools and so on. We sincerely hope that this conference will serve a chance for participants to get perspectives on the state-of-the-art technologies, share the valuable and renovated experiences and meet the people from various communities.

In the conference more than 73 papers are selected and presented in all topics concerning manufacturing process technology. From 8 countries, about 150 engineers and researchers will attend this conference. We, the organizing committee, expect the presentation of their achievements and developments as well as fruitful discussions.

We also hope that this conference promotes the international exchange of useful information and creates friendship among the specialists who are working in the field of manufacturing process technology.

The organizing committee appreciates your contribution to this conference.

Yanbian University, Yanji, China, August 21, 2019

Prof. Sung Ki Lyu, Yue Wen Hui, Ren Jingri Chairman of ICMPT-5 2019

Conference Officials

ChairmanŸ Professor Sung Ki Lyu, Director, Korean Society of Manufacturing Process

Engineers, Korea

Ÿ Professor Yue Wen Hui, Hunan University of Science and Technology, China

Ÿ Professor Ren Jingri, Yanbian University, China

Steering CommitteŸ PIAO XIANGFAN, Yanbian University, China

Ÿ Tae Jo Ko, Yeungnam University, Korea

Ÿ Li Peng Nan, Hunan University of Science and Technology, ChinaŸ Zhezhu Xu, University of Alberta, Edmonton, Canada

Organizing CommitteeŸ Chair

n Seongdae Choi, Kumoh National Institute of Technology, Korea

Ÿ Co-chairsn Hochan Kim, Andong University, Korea

n Inhwan Lee, Chungbuk University, Korea

n Lu Long, Huaihai Institute of Technology, China

n Doosun Choi, KIMM, Korea

n Seokwoo Lee, KITECH, Korea

n Honggun Kim, Jeon Ju University, Korea

n Hyun-jin Choi, Daegu Mechatronics&Materials Institute, Korea

n Kyung-Chang Lee, Pukyong National University, Korea

n Donghyeon Cho, Daejin University, Korea

n Sung-hun Oh, Chonbuk National University, Korea

n Jeong-won Lee, SMT LTD, Korea

n Jae-ho Yoon, Jukwang LTD, Korea

Technical Program CommitteeŸ Young-tae Cho, Changwon National University, KoreaŸ Hyeon-gyu Kwon, Kumoh National Institute of Technology, KoreaŸ Bong-kee Lee, Chonnam National University, KoreaŸ Jeong-woo Park, Chosun University, KoreaŸ Hae-ji Kim, Gyeongnam National Univ. of Science and Technology, KoreaŸ Joo-han Kim, Seoul National University of Science and technology, KoreaŸ Eun-chae Jeon, Ulsan University, KoreaŸ Hae-ji Kim, Gyeongnam National Univ. of Science and Technology, KoreaŸ Jae-uk Lee, KITECH, KoreaŸ Hyun-joon Kim, Kyungpook National University, KoreaŸ Igu Kwak, Jeonju University, Korea Ÿ Jun-young Park, Kumoh National Institute of Technology, KoreaŸ Du-hwan Mun, Kyungpook National University, KoreaŸ Se-jin Yuk, Hanyang University, KoreaŸ Hae-woon Choi, Keimyung University, KoreaŸ Jang-Min Park, Yeungnam University, KoreaŸ Jaewon Choi, The Univ. of Arkon, USAŸ Sanghu Park, Pusan National University, KoreaŸ Byeong-chang Kim, Kyungnam University, KoreaŸ Seong-uk Zhang, Dongeui University, KoreaŸ Jae-seop Kwak, Pukyoung National University, KoreaŸ Sang-chan Lee, Mokpo National University, KoreaŸ Young-hun Jeong, Kyungpook National University, KoreaŸ Han-sub Sim, Gyeongnam National Univ. of Science and Technology, KoreaŸ Jun-se Han, Korea Institute of Machinery Material, KoreaŸ Jae-sil Kim, Changwon National University, KoreaŸ Jeong-seok Kim, Chosun University, KoreaŸ Chang-woo Lee, Konkuk University, KoreaŸ Jonggeol Ok, Seoul National University of Science and technology, KoreaŸ Yong-ho Jeon, Ajou Univerisity, KoreaŸ Mungyu Kwak, Kyungpook National University, KoreaŸ Jaeung Cho, Kongju National University, KoreaŸ Seung-jae Lee, Wonkwang University, KoreaŸ Jeong-min Kim, Andong National University, Korea

Ÿ Hae-sung Yoon, Korea Aerospace University, KoreaŸ Hyong-kyun Kim, Far East University, USAŸ Myung Chang Kang, Pusan National University, KoreaŸ Myeong-hun Kim, KIFLT, KoreaŸ Bum-sik So, Gbitech, KoreaŸ Hae-ryong Youn, Korea Institute of Robot and Convergence, KoreaŸ Mun-chol Yoon, Pukyong National University, KoreaŸ Jae-hwan Son, Daegu Mechatronics & Materials Institute, KoreaŸ Sang-don Mun, Chonbunk National University, KoreaŸ Jean Byringiro Bosco, Dedan Kimathi University of Technology, KenyaŸ Byeng-Hee Yoo, Texas State Univ., USA Ÿ Jae-Won Choi, University of Akron, USAŸ Uthayakumar, Kalasalingam University, IndiaŸ Li Chang Ping, Hunan University of Science and Technology, China

Conference Secretariat● Secretariat Prof. Seong-Dae Choi, Kumoh National Institute of Technology, Korea

E-mail: [email protected] Phone: +82-10-8812-8130

● Managing Secretariat Mrs. Eun-Jung Shim, Korean Society of Manufacturing Process Engineers, Korea

E-mail: [email protected] Phone: +82-53-581-2239

Program

Program Overview[Wednesday / August 21]

12:10 ~ 13:20 : Registration14:30 ~ 15:20 : Opening Ceremony & Keynote Speech 15:30 ~ 16:15 : Oral Presentation 16:30 ~ 17:30 : Poster Presentation 118:30 ~ 20:00 : Reception

[Thursday / August 22]

09:00 ~ 10:30 : Poster Presentation 210:40 ~ 11:40 : Special Session 111:40 ~ 12:40 : Special Session 213:00 ~ 14:00 : Lunch 14:00 ~ 15:15 : Special Session 315:30 ~ 16:30 : Lab Tour16:30 ~ 18:00 : Technical Discussion

[Friday / August 23]

09:00 ~ 10:15 : Special Session 410:25 ~ 11:40 : Special Session 511:50 ~ 13:00 : Special Session 613:00 ~ 14:00 : Lunch 14:00 ~ 15:00 : Technical Discussion15:30 ~ 18:00 : Technical Tour18:30 ~ : Closing Ceremony

[Saturday / August 24]

09:00 ~ 10:30 : Yanbian University & Technical Tour

Keynote Speech[Chairpersons : Hochan Kim, Andong National University, Korea]

KN-1 Observations on Eigenfrequencies in Structural Modification ································ 1 - Seong-Ho Yun(Kumoh National Institute of Technology, Korea)

KN-2 Research on the Kinematic Characteristics of Digging Tree Mechanism of Tree Transplanter ·················································································································· 2

- ZHAO Dejin(Yanbian University, China)

Oral Presentation 1[Chairpersons : Kyong-Chang Lee, Pukyong National University, Korea]

OP1-1 Portable Incubator for Pre-Term Babies ············································································································································ 3 - Amre Eizad, Falak Zahra, Hamza Alam, Hassan Tahir, Afrasiab Khan Bangash (Air University, Pakistan)

OP1-2 A Study on the Optimal Design of Two-Stage Planetary Gearbox for Industrial Machinery ························································································································· 4

- Zhen Qin, Dongseon Kim, Yu-Ting Wu and Sung-ki Lyu(Gyeongsang National University, Korea)

OP1-3 A New Quick-Response Nonlinear Sliding Mode Tracking Differentiator with its Chattering-Free Discrete-Time Algorithm ································································ 5

- LV Zhengxiang, JIN Shanhai, and YU Jingdong(Yanbian University, China)

Poster Presentation 1[Chairpersons : Seong-Dae Choi, Kumoh National Institute of Technology, Korea]

PP1-1 Frequency Domain Analysis for An Adaptive Windowing Parabolic Sliding Mode Filter ································································································································· 6

- Shanhai Jin, Xiaodan Wang, Yonggao Jin(Yanbian University, China) and Xiaogang Xiong(Singapore Institute Of Manufacturing Technology, Singapore)

PP1-2 Discrete-time Algorithms of a Parabolic Sliding Mode Filter: a Comparative Review ······························································································································ 7

- Shanhai Jin, Xiaodan Wang, Yonggao Jin(Yanbian University, China), Xiaogang Xiong(Harbin Institute of Technology Shenzhen Graduate School, China)

PP1-3 Parabolic Sliding Mode Filtering with Feed-forward Compensation ························ 8 - Shanhai Jin, Xiaodan Wang, Yonggao Jin(Yanbian University, China), Xiaogang

Xiong(Harbin Institute of Technology Shenzhen Graduate School, China)

PP1-4 Friction Property for Sliding Contact of Micro Patterned Half Circle Shape ········································································································································ 9 - Yan Mengmeng, Ren Jingri(Yanbian University, China)

PP1-5 Study on Friction and Wear Properties of 45 Steel ·········································································································································· 10 - Yan Mengmeng, Ren Jingri(Yanbian University, China)

PP1-6 Relationship between Surface Quality Similarity and Friction Coefficient of Various Materials ··································································································· 11

- Tang Ziming, Li Changjie, Ren Jingri(Yanbian University, China)

PP1-7 Design and Experimental Study on Vibrating Digger ······································································································································ 12

- Wen Xuezhu, Lian Zheman(Yanbian University, China)

PP1-8 Main Parameter of Effect on Vibrating Digger Performance ······································································································································ 13 - Wen Xuezhu(Yanbian University, China)

PP1-9 Study on Characteristics of Green Parts of Birch Flour/Polyester Composite by Selective Laser Sintering

······································································································································ 14 - Dejin Zhao(Yanbian University, China)

PP1-10 A Study on the Development of Device for Combination of PE pipe and Socket ····························································································································· 15

- Jeong-hwan Lee, Seoung-hyeon You, Sung-hoon Oh(Chonbuk National University, Korea)

PP1-11 A Study on the Cutting Characteristics during Trimming Process of CFRP ··· 16 - Seoung-hyeon You, Jeong-hwan Lee, Sung-hoon Oh(Chonbuk National University,

Korea)

PP1-12 A Study on Fracture Property of Adhesive Interface at Bonding Material Attached with the Materials of Reinforced Plastic and Foam ································ 17

- Jae-Ung Cho, Jae-Won Kim(Kongju University, Korea)

PP1-13 A Study on Improving the Energy Efficiency and Temperature Dispersion of Refrigerator ···················································································································· 19

- Jiachen Gao, Jaeyeol Kim, Yoonsoo Jung, Eunji Kim(Chosun University, Korea), Jaeho Kim, Daeyeong Ha(G.I.M.Tech Co.,Ltd, Korea)

PP1-14 A Study on Dual Servo System for Ultra Fine Machining ······························· 20 - GyungIl Lee, Jaeyeol Kim and JiachenGao, Yoonsoo Jung, Eunji Kim(Chosun

University, Korea)

PP1-15 Mechanical Properties of 3D Printed Tool Steel for Trimming Die ··············· 21 - Hochan Kim(Andong National University, Korea) Sungjong Choi(Andong National

University, Korea) and Jongdock Seo(Shin Young Co., Ltd., Korea)

PP1-16 A Study on Robot Motion in Human-Robot Collaboration for Smart Factory Safety Implementation ································································································· 23

- Hye-Yeon Ryu, Dae-Won KIM, Kyong-Chang Lee and Hyun-Hee KIM(Pukyong National University, Korea)

PP1-17 Comparative Study on Conventional Methods and DICOM Methods Followed for the Hearing aid Shell Production ····································································· 25

- Hyong-kyun Kim(Far East University, Korea), Seong-Dae Choi(Kumoh National Institute of Technology, Korea)

PP1-18 Cam Box Design for a Drum Type of an Automatic Tool Changer with a Roller Gear Cam ········································································································· 26

- Hyun-Jin Choi(Daegu Mechatronics & Materials Institute), Han-Gyu Lee, Woo-Sub Cha, Gyeong-Yeon Kim(Dae Young CoreTech Co., Ltd, Korea)

PP1-19 A Study on the Process Simulation Analysis of the High Precision Laser Scriber System ············································································································· 27

- Hyun-Jin Choi(Daegu Mechatronics & Materials Institute), Seong-Dae Choi(Kumoh National Institute of Technology, Korea)

PP1-20 Development of Polar Component Separation Apparatus with Carbon Fiber Column ······················································································································· 28

- Juncheng Zhao, Shuo Cheng, Xiangfan Piao(Yanbian University, China)

PP1-21 Ultrasound-assisted Liquid-liquid Spray Extraction for the analysis of Trace-level Persistent Organic Pollutants in water

······································································································································ 29 - Han Yeong Kaw(University Putra Malaysia, Serdang, Malaysia), Junlin Li, Xiangzi

Jin, Xiangfan Piao, Donghao Li(Yanbian University, China)

PP1-22 A Study on Optimal Design of Drive Gear for Transfer Case ······················· 30 - Dongseon Kim, Zhen Qin, Seongmin Moon and Sung-ki Lyu(Gyeongsang National

University, Korea)

Poster Presentation 2[Chairpersons : Sung-hoon Oh, Chonbuk National University, Korea)]

PP2-1 Sheet Metal Conical Roll-twisting (CRT) Process for Fabrication of a Spiral Blade ····························································································································· 31

- Sanghu Park and Seongmoon Yang(Pusan National University, Korea)

PP2-2 A Study on the Heating System of Hot Water Panel ··········································· 32 - Dong-Hyun Cho(Daejin University, Korea), Myeong-Gi Jo(OnsuTech Co., Ltd.,

Korea)

PP2-3 Study on the Structural Analysis of Plunger Hinge according to the Structure of Press Power Transfer Unit ························································································· 33

- Chul Woo Park(Daegu Mechatronics & Materials Institute, Korea), Boo Youn Lee (Keimyung University, Korea) and Han Yong Lee(IDS Co., LTD, Korea)

PP2-4 Study on the Static Stiffness of Dual Head Scroll Lapping Machine ················ 35 - Chul Woo Park(Daegu Mechatronics & Materials Institute), Boo Youn Lee

(Keimyung University, Korea) and Chang Ho Kim(Tae Sung Technology Co., LTD, Korea)

PP2-5 Analysis of Fracture Toughness of Carbon Composite according to Fiber Orientation using Infrared Thermography ·································································· 37

- Sun-Ho Go, Min-Sang Lee(Graduate School of Mechanical Engineering, Jeonju University, Korea), Chang-Ki Hong(Graduate School of Carbon Fusion Engineering, Jeonju University, Jeonju, Korea), Lee-Ku Kwac, Hong-Gun Kim(Department of Mechanical and Automotive Engineering, Jeonju University, Jeonju, Korea)

PP2-6 Design and Production of 24 Sets of Horizontal Vertical Diffusion Tank

Compatible Test System ····························································································· 39 - Mengyan Gao(Yanbian University, China), Xiangfan Piao(Ministry of Education,

Yanbian University, China)

PP2-7 Design of Combined System of Multi-channel Liquid Phase Microextraction System And Gas Chromatography

······································································································································ 40 - Xinjie Zhang(Yanbian University), Xiangfan Piao(Ministry of Education, Yanbian

University, China)

PP2-8 A Study on Optimization of Ball End-mill Geometry Using FEM ···················· 41 - Jong Min Lee, Tae Jo Ko, Ye In Kwak, Farooq Ahmed(Yeungnam University,

Korea)

PP2-9 Effective Burr Removal Mechanism during Drilling of CFRP using Helical Groove Drill Bit ······························································································ 42

- Zhen Yu, Tae Jo Ko and Ki Moon Park(Yeungnam University, Korea)

PP2-10 Optimization of Temperature Control System for 3-D Curved Cover-glass Molded Shapes ·········································································································· 43

- Soon Uk Kim(Addfine Technology co., LTD, Korea) and Seong Dae Choi(Kumoh National Institute of Technology, Korea)

PP2-11 Study on Vibration Analysis and Control of a Machine Tool ·························· 44 - Gi Man Kim and Seong Dae Choi(Kumoh National Institute of Technology,

Korea)

PP2-12 Development of Automatic Attachment Device for Display Driver IC Protection of Thin Film Metal Foil ······················································································ 45

- Young Hyung Kim(Department of IT Convergence, Kumoh National Institute of Technology, Korea) and Seong Dae Choi(Department of Mechanical System Engineering, Kumoh National Institute of Technology, Korea)

PP2-13 Finite Element Simulation for Characterization of Laser Melting Deposition ······································································································································ 46 - Gyeong Yun Baek(Chonnam National University, Korea) and Do-Sik Shim(Korea

Maritime and Ocean University, Korea)

PP2-14 A Study on Tactile Sensor-Based Gripper Control System ·································· 47 - Ki-min Jeong, Hyun-Hee Kim Kyung-Chang Lee(Pukyong National University,

Korea)

PP2-15 Research on Positioning Error Compensation System of Ball Screw Feed Drive Machine Tool ············································································································· 48

- Zhen Qin, Dongseon Kim(Gyeongsang National University, Korea), Zhe-zhu Xu(University of Alberta, Canada) and Sung-ki Lyu(Gyeongsang National University, Korea)

PP2-16 Stress Analysis of Asymmetric Gears ································································· 49 - Tomoya Masuyama(National Institute of Technology, Tsuruoka College, Japan)

PP2-17 Gear Whine with Virtual Designed Gearbox ······················································ 50 - Jiha Kim, Seungwon Jeong(Romax Technology Limited, United Kingdom)

PP2-18 A Study on the Calculation Method of Ball Screw Feed Drive ····················· 51 - Xiaojing Liu and Zhezhu Xu(University of Alberta, Edmonton, Canada)

PP2-19 Performance of EDM Assisted Milling based on a Novel Tool ······················· 52 - Changping Li, Shujian Li, Pengnan Li, Qiulin Niu, Xinyi Qiu(Hunan University

of Science and Technology, China) and Tae Jo Ko(Yeungnam University, Korea)

PP2-20 Pull-off Test and Analysis of CFRP Hat-shaped Structure ··················· 53 - Shujian Li, Pengnan Li, Changping Li, Qiulin Niu(Hunan University of Science

and Technology, China) and Tae Jo Ko(Yeungnam University, Korea)

PP2-21 Tool Structure Optimization Based on Edge Force Coefficient ····················· 54 - Xinyi Qiu, Pengnan Li, Anhua Chen and Changping Li(Hunan University of

Science and Technology, China)

PP2-22 Study on Effect of Vibration Amplitude on Cutting Performance of SiCp/Al Composites during Ultrasonic Vibration assisted Milling ····································· 55

- Lu Jing, Qiulin Niu, Chunhao Wang, Daohui Xiang, Xiao Liu(Hunan University of Science and Technology, China)

Special Session 1[Chairpersons : Sanghu Park, Pusan National University, Korea]

SS1-1 A Study on the Analysis of Flow Rate According to Proper Discharge Rate of Drainage Pump and the Body Bolt Hole Shape for the Crossing of River a Test of Combat Equipment

···································································································································· 56 - Dae Un Kim, Gwi Tae Moon, Chang Hyun Cho, Ki Joong Lee(Consolidated

Maintenance Depot Republic of Korea Army, Korea)

SS1-2 Classification of Non-coding Regions in DNA using Deep Learning ············· 57 - Hilal Tayara and Kil To Chong(Chonbuk National University, Korea)

SS1-3 Press-Forming of GFRP For Automobile Suspension Coil Spring ········································································································································ 58

- Jungkyu Shin, Jaeki Kwon(Youngheung Iron and Steel located in Bo-ryung, Republic of Korea)

SS1-4 Simulation Analysis of Flexible Track Drilling Machine Based On ADAMS ···································································································································· 59

- Zhonggang Zhu, Qi Zhang, Jianhua Lv(Zhejiang Shuanghuan Driveline Co., China)

Special Session 2[Chairpersons : Zhang HuiXia ,Huaihai Institute of Technology, China]

SS2-1 Study on Three-dimensional Printing of Porous 316L Stainless Steel by 3DP Method with Water-based Binder ················································································ 60

- Jianming Yang, Yang Tang, Dazhi Huang and Yunfei Ding(School of Mechanical and Ocean Engineering, Jiangsu Ocean University, China)

SS2-2 Microstructure and Properties of Ni/Al2O3 Composites Prepared by Powder Injection Molding

······································································································································ 61 - Feng Shang(Huaihai Institute of Technology, China), Zhenwei Cao(China

University of Mining and Technology, China), Peng Zhang, Bin Qiao and Huaqiang Li(Huaihai Institute of Technology, China)

SS2-3 Boundary Lubrication in Transient Elliptical Contact ········································································································································ 62 - Dichu Xu(University of Leeds,UK), Qi Zhang(R&D Dept., Zhejiang Shuanghuan

Driveline Co., LTD., China) and Jiugen Wang(Zhejiang University, China)

SS2-4 A Study on the Friction and Wear Properties of 45 Steel、TiN and TiAlN ······ 63 - Yuanming LI Huibo He and Huaying Li(Southwest University, China)

Special Session 3[Chairpersons : Huaying Li, Southwest University, China]

SS3-1 Study on Cutting Force and Cutting Temperature in Dry Cutting of 20Cr Steel ········································································································································ 65 - YUE Qi-bin, HE Hui-bo, LI Hua-ying, ZHANG Xian-yin, Jiang Xue(Southwest

University, China)

SS3-2 Research Status of Low Pressure Casting Aluminum Alloy Wheels ···················· 66 - Lichao Feng(Huaihai Institute of Technology, Chian)

SS3-3 Effects of Matrix Components on Microstructure and Properties of SiCP/Al-Fe-V-Si Composites

······································································································································ 67 - HE Yi-qiang, QIAN Chen-chen, XU Hu-lin, CHEN Jin-song, LI Hua-qiang,

FENG Li-chao(Jiangsu Ocean University, China)

SS3-4 Research on Preparation of Copper Based Superhydrophobic Surface by Jet Electrodeposition

······································································································································ 68 - HUANG Dazhi, TIAN Zongjun, LIU Zhidong, SHEN Lida, QIU Mingbo(Nanjing

University of Aeronautics and Astronautic, China) CHEN Jinsong, MA Shiwei(Huaihai Institute of Technology, China)

Special Session 4[Chairpersons : Wen XiQin, Huaihai Institute of Technology, China]

SS4-1 Performance of Ion plating TiAlN Coating on YG8 ··············································· 69 - HuiXia Zhang(Huaihai Institute of Technology China)

SS4-2 Study on Three-dimensional Printing of Porous 316L Stainless Steel by 3DP Method with Water-based Binder ················································································ 70

- Jianming Yang, Yang Tang, Dazhi Huang and Yunfei Ding(Jiangsu Ocean University, China)

SS4-3 Based on Interest Region Detection of Roadway Environment Perception System by Autonomous Mobile Robot ·············································································· 71

- Mingqin Liu(Huaihai Institute of Technology, China), Xiaoguang Zhang(China University of Mining and Technology, China)

SS4-4 Caterpillar Robot Mechanical Structure Design ······················································ 72 - Long Lu(Huaihai Institute of Technology, China), Xiaoguang Zhang(China

University of Mining and Technology, China)

Special Session 5[Chairpersons : LU Long, HuaiHai Institute of Technology, China]

SS5-1 Supplier Selection in Supplier Chain Management using Choquet Integral-based Linguistic Operators under Fuzzy Heterogeneous Environment ·························· 73

- Xiqin Wen(Huaihai Institute of Technology, China)

SS5-2 Tracking Control for Wheeled Mobile Robots Using Neural Network Model Algorithm Control ······································································································· 74

- Yuan Liang Zhang(HuaiHai Institute of Technology, China)

SS5-3 Based on Fractal and Wavelet Technology Defect Edge Detection of Weld X Ray Image ·························································································································· 75

- Anhua Peng(Huaihai Institute of Technology, China), Xiaoguang Zhang(China University of Mining and Technology, China)

SS5-4 Microstructure and Properties of Ni/Al2O3 Composites Prepared by Powder Injection Molding ······································································································ 76

- Feng Shang(Huaihai Institute of Technology, China), Zhenwei Cao(China University of Mining and Technology, China), Peng Zhang, Bin Qiao and Huaqiang Li(Huaihai Institute of Technology, China)

Special Session 6[Chairpersons : Zhang HuiXia, Huaihai Institute of Technology, China]

SS6-1 Research Progress in the Bi-direction Non-contact Mechanical Seal Technology ·················································································································································· 77 - TU Qiaoan(Nanjing Forestry University, China), ZHOU Fei(Academy of Frontier

Science Nanjing University of Aeronautics and Astronautics, China)

SS6-2 Design of Roll Forming Parts to Support PV modules in Building Roof ······· 78 - Sun-Ho Kim and Sung-Uk Zhang(Dong-Eui University, Korea)

SS6-3 Simulation Analysis and Experimental Research on T Grooved End Face Seal Under mid-and-low Speed ·························································································· 79

- Huixia Zhang Long Lu(Huaihai Institute of Technology, China) and Sungki Lyu(Gyeongsang Nati. Univ., Korea)

SS6-4 Structural Design of a New Type of Straw Returning Plowing and Rotary Tilting Duplex Working Machine ···························································································· 80

- Shufa Chen, Fawang Xie(JIANGSU OCEAN UNIVERSITY, China), Xianqing Meng(Ganyu Agricultural Mechanization Technology Extension Service Station, China)

Proceedings of the 5th International Conference on Manufacturing Process Technology 2019 Yanbian University in China, August 21 ~ 24, 2019

Observations on Eigenfrequencies in Structural Modification

Seong-Ho Yun1,#

1 Department of Mechanical Engineering, Kumoh National Institute of Technology, Daehakro 61,

Gumi, Gyeongbuk 730-701, Republic of Korea

# [email protected], TEL: +82-54-478-7324, FAX: +82-54-478-7319

Abstract

In this work natural frequencies are estimated due to the change in modification of connection

configuration of the jointed structural members. Area of the connected region is different from

connection type to type and thus the mass of jointed parts changes accordingly. This results into

change in dynamical characteristics of the member and needs a study of sensitivity analysis of the

system eigenvalues with respect to geometrical parameters such as thickness and width.

Furthermore the dynamical behavior is affected noticeably depending on the magnitude of stiffness

of the flexible jointed area. This corresponding study describes relocations of structural natural

frequencies by using the first order approximation. This formulation is usually applicable to the finite

element structures because of the sensitivity analysis based on the mass and stiffness matrices.

The accuracies of the predicted natural frequencies are tested and validated by performing the

comparative numerical computations.

Keywords: Structural Modification, Natural Frequency Sensitivity, Flexible Connection

Acknowledgement

“This research was supported by Kumoh National Institute of Technology(2019-104-083)”

-1-


Research on the Kinematic Characteristics of Digging Tree Mechanism of Tree Transplanter

Dejin Zhao1,#

1 Department of Mechanical Engineering，Yanbian University，Yanji，China

E-mail: [email protected], TEL: +86-433-273-2294

Abstract

In order to study the kinematic characteristics of the tree transplanter and the hydraulic cylinder, this

paper established the model of the tree transplanter with the Cero2.0 software and analyzed kinematic

characteristics of the hydraulic cylinder and the tree spade when the tree spade was driven by the

hydraulic cylinder with the analytical method. The dynamic simulation curves of the angular velocity and

the angular acceleration of the hydraulic cylinder can be obtained with the Matlab software. Then the

appropriate format model file was imported into Adams software, and the angular velocity and the

angular acceleration of the hydraulic cylinder were analyzed and simulated in Adams. The obtained

curves in Adams software were compared with the curves obtained with the Matlab using the analytical

method. The result revealed that the trends of the two ways simulation curves were consistent. The

comparison showed the analytical method of kinematic characteristics of the tree transplanter and

hydraulic cylinder was correct.

Keywords: The Tree Transplanter, Mechanism of Digging Tree, Kinematic Characteristics

-2-


Portable Incubator for Pre-Term Babies

Amre Eizad1,#, Falak Zahra1, Hamza Alam1, Hassan Tahir1, Afrasiab Khan Bangash1

1 Department of Mechatronics Engineering, Air University, Pakistan.

# Corresponding Author / E-mail: [email protected], TEL: +82-10-5687-9383, FAX: +82-55-772-1578

Abstract

Preterm children require a controlled environment that is as close to that inside the womb as possible.

Incubators are well equipped to fulfill this requirement but they are cumbersome and expensive,

restricting their portability and availability in less developed and rural areas. This research comprises

the development and system validation of a portable incubator. The system consists of a collapsible

baby enclosure that can be stowed inside the system base when not in use. The enclosure is made

up of acrylic so that it is easy to clean and allows unhindered visual observation of the occupant

while being robust enough to withstand conditions during transit. The system can be powered either

by mains supply or by a 12VDC automobile power supply. It also has an onboard battery to ensure

a continuous supply during transit. A Peltier plate controlled using a microcontroller ensures the

desired enclosure temperature irrespective of the ambient conditions. The built-in sensor probes can

measure skin temperature, pulse rate, blood oxygenation level, and ECG of the infant and display

them on the system screen. The system function is validated through tests of its peak power

consumption and of the heating and cooling performance of the environment control system.

Keywords: Portable Incubator, Infant Care, Peltier Plate

-3-


A Study on the Optimal Design of Two-Stage Planetary Gearbox for

Industrial Machinery

Zhen Qin1, Dongseon Kim1, Yu-Ting Wu1 and Sung-ki Lyu1,#

1 Gyeongsang National University 900, Jinju, Gyeongnam, 660-701, Korea


Abstract

Gearboxes find extensive use in a wide variety of fields. Over the years, a great deal of research

has been devoted to prevention of gear failures and gear noise. Devising an optimal design is often

considered as the most important stage in the development of a new gearbox. Similar to the varying

requirements of different applications, the directions and method of gearbox design optimization are

also varied. Usually, gear geometry optimization has a great influence on the strength and

transmission error which is the excitation factor that affects the noise level. The main objective of

this article is to study the geometry optimization methodologies of planetary gearbox.

In this study, RomaxDESIGNER which is advanced CAE software used for the design and analysis

of mechanical was used to generate 3D models and calculate various of analysis. Macro geometry

optimal design method and micro geometry modification method are carried out based on a two-

stage planetary gearbox for special-purpose industrial machinery. The optimal macro geometry

parameter was verified by calculations of each gear in gear train, and the effect of micro geometry

modification was also reflected in the analysis of load distribution and transmission error. As an

important evaluation index of power transmission, the mechanical efficiency was calculated based

on ISO standard.

Keywords: Optimal Design, Two-Stage Planetary Gearbox, Power Transmission

Acknowledgement

This study was supported by Basic Science Research Program through the NRF of Korea(NRF)

funded by the MEST(NRF-2016R1D1A1A09920105) & Romax Designer of Romax Technology.

-4-


A New Quick-Response Nonlinear Sliding Mode Tracking Differentiator

with its Chattering-Free Discrete-Time Algorithm

LV Zhengxiang1, JIN Shanhai1,#, and YU Jingdong1

1 Department of Mechanical Engineering, Yanbian University, Yanji, China


Abstract

Traditional nonlinear tracking differentiator have a trade off between noise-reduction and quick-

response, furthermore, due to the existence of discontinuous sign um function, its output has a

high-frequency chattering in the discrete-time domain. In order to solve above two problems, This

paper proposes a new noise-tolerant sliding mode tracking differentiator (SMTD). The new SMTD

is an extension of Jin et al.s parabolic sliding mode filter (PSMF-J). On the one hand, the proposed

SMTD adds a exponential convergence term that allows the system to converge faster when

representative point is away from the sliding surface to achieve global fast convergence. One the

other hand, a set-valued function is exploited to replace discontinuous sign um function, and the

discrete-time algorithm of the proposed SMTD is presented by implicit-Euler schemes. Simulations

verify that, the proposed SMTD could converge more quickly than PSMF-J while maintaining

similar noise reduction performance as PSMF-J, furthermore, the chattering phenomenon is

avoided.

Keywords: Quick-Response, Nonlinear Sliding Mode, Chattering-Free Discrete-Time Algorithm

-5-

mailto:[email protected]


Frequency Domain Analysis for An Adaptive Windowing

Parabolic Sliding Mode Filter

Shanhai Jin1, Xiaodan Wang1, Yonggao Jin1 and Xiaogang Xiong2


2 Singapore Institute Of Manufacturing Technology, 71 Nanyang Dr, Singapore 638075,


Abstract

This paper analyses a frequency domain performance of an adaptive windowing parabolic sliding

mode filter (AW-PSMF) by using Describing Function method. The analysis results show that AW-

PSMF has similar gain characteristics to that of the second-order Butterworth low-pass filter (2-

LPF), but AW-PSMF produces flatter gain behavior than 2-LPF does at cutoff frequency. In

addition, AW-PSMF produces smaller phase lag than 2-LPF does.

Keywords: Parabolic Sliding Mode Filter; Adaptive Windowing; Frequency Domain Analysis

-6-



Discrete-time Algorithms of a Parabolic Sliding Mode Filter:

a Comparative Review

Shanhai Jin1, Xiaodan Wang1, Yonggao Jin1, Xiaogang Xiong2


2 School of Mechanical Engineering and Automation, Harbin Institute of Technology Shenzhen

Graduate School, Shenzhen 518055, P. R. China


Abstract

This paper compares two chattering-free discrete-time algorithms of a parabolic sliding mode filter,

which has become one of the most important components of the active disturbance rejection

control, for removing noise. One is an algorithm derived by using the isochronic region (IR) method,

and the other one is an algorithm derived by using the backward Euler (BE) discretization method.

Numerical example results show that the BE method realizes exact arrival of the filter’s state to the

sliding surface and the target state, whereas the IR method produces overshoot. In addition to that,

the phase lag of the BE method is smaller than that of the IR method.

Keywords: Sliding Mode Filter; Chattering-free; Backward Euler Discretization; Isochronic Region

-7-


Parabolic Sliding Mode Filtering with Feed-forward Compensation

Shanhai Jin1, Xiaodan Wang1, Yonggao Jin1 and Xiaogang Xiong2


2 School of Mechanical Engineering and Automation, Harbin Institute of Technology Shenzhen

Graduate School, Shenzhen 518055, P. R. China


Abstract

In motion control systems, feedback signals are often corrupted by noise because of environmental

disturbances and measurement errors. Thus, filters are necessary to remove noise to obtain

reliable signals. This paper proposes a new sliding mode filter that possesses a parabolic-shaped

sliding surface. The proposed filter is an extension of a Jin et al.’s parabolic sliding mode filter by

including feed-forward compensating terms for accelerating the tracking speed between the output

and the input. Its discrete-time algorithm is developed by using the backward Euler discretization,

and its discrete-time implementation does not produce chattering. A numerical example is

executed for validating the effectiveness and advantage of the proposed filter.

Keywords: Sliding Mode Filter; Feed-forward Compensation; Backward Euler Discretization;

Feedback Control

-8-



Friction Property for Sliding Contact of Micro patterned Half Circle

Shape

Yan Mengmeng1, Ren Jingri1#


# E-mail: [email protected], TEL: +86-433-273-2294

Abstract

In this paper, the pin on disc friction and wear tester at ambient temperature and atmospher

ic pressure and paraffin oil lubrication condition and different density of micro semicircles of

friction test. The influence of contact pressure, graphic density, geometry, sliding direction an

d distance on the friction performance is studied. The analysis in different experimental cond

itions by using Stribeck curve, surface friction properties of micro semicircles of different den

sity. The results show that the different density of micro semicircles, under different sliding d

irections, the variation of friction coefficient is significantly different, but this difference will de

creases with the increase of density，achieve the best when the density is 15%.With the inc

rease of density, it is easier to change the friction mechanism from the critical state to the f

luid dynamic lubrication.

Keywords: Micro Half Circle; Contact Pressure; Stribeck Curve; Friction Properties

Acknowledgement

This project is supported by National Natural Science Foundation of China (Grant No. 51265050).

-9-



Study on Friction and Wear Properties of 45 Steel

Yu Zhipeng1, Ren Jingri1,#

1Department of Mechanical Engineering, Yanbian University, Yanji, China


Abstract

In this article,the grinding material was 45 steel.The friction coefficient of the material was

measured by a thrust ring friction and wear tester.The effects of load,sliding speed and surface

roughness on dry sliding friction and wear properties were systematically analyzed.The weight of

three factors affecting friction coefficient was studied.The experiment results show that with the

increase of load,the speed decreases and the friction coefficient decreases.The weight of

load,speed and surface roughness were 0.57,0.36,0.07.

Key words: 45 Steel; Fiction and Wear; Weight

-10-



Relationship between Surface Quality Similarity and Friction Coefficient

of Various Materials

Tang Ziming1, Li Changjie1, Ren Jingri1#



Abstract

Based on the large thrust ring contact method, we conducted the experiments on friction coupling

phenomenon. We selected the fuzzy clustering analysis method to establish the calculation model,

the relationship between the similarity of the two surfaces rub quality and the friction coefficient is

studied. Through experimental analysis, the similarity of the two surfaces rub quality and the

friction coefficient is significantly correlated in the sample. The friction coefficient increases with the

similarity increases, which indicates that the surface quality of similarity calculation model is correct.

Key words: Surface Quality Similarity; Cluster Analysis; Friction Coefficient

Acknowledgement

This project is supported by National Natural Science Foundation of China (Grant No. 51265050).

-11-



Design and Experimental Study on Vibrating Digger

Wen Xuezhu1, Lian Zheman1

1Department of Mechanical Engineering, Yanbian University, Yanji, China


Abstract

The vibrating digger blade and sieve mechanism were adopted by a vibrating digger. The average

height of accumulation soil on vibrating digger blade and sieve has been measured through soil

broken up experiment, and the effects of displacement curve and soil separation on vibrating

digger blade and sieve have been analyzed. When the amplitudes of end point of digger blade and

sieve were greater than 12. 15 mm and 9. 17 mm, and regression slopes of end point of digger

blade and sieve from lowest positions to highest positions were greater than - 1. 87 and -2.50, the

results showed that vibrating digger soil separation has good effect.

Key words: Vibrating Digger; Displacement Curves; Soil Separation Effect

-12-



Main Parameter of Effect on Vibrating Digger Performance

Wen Xuezhu 1



Abstract

This paper is defined three parameters λ，K and T using amplitude，vibrating frequency and

tractor forward speed of Vibrating Digger and creats regression equation to analyze the soil

separation ability，vibrating digger draft，driving torque and consumption power of vibrating digger．

Through the analysis，it is known that the determination coefficient of regression equation

represented by parameter T is always ranking the second in each kind of the regression equations，

but when all the regression equations are considered，the determination coefficient of regression

equation represented by parameter T is the most universal．

It was estimated that the T equal to 2.4 or greater was the minimum recommended value．

Key words: Vibrating Digger; Soil Separation Ability; Draft; Driving Torque; Consumption Power

-13-



Study on Characteristics of Green Parts of Birch Flour/Polyester

Composite by Selective Laser Sintering

Dejin Zhao1

1 Department of Mechanical Engineering，Yanbian University，Yanji，China


Abstract

In this paper, the birch flour was the raw material with its particle size less than 100μm and the

polyester hot-melt adhesive was used as binder with its particle size less than 60μm. The birch

flour was dried using high speed mixer with heating function. The birch flour/polyester composite

were prepared using the physical mixing method. The surface of the specimen and fracture surface

of specimen were analyzed through the micorgraphs of scanning electron microscopy. In order to

study the characteristics of laser sintering, the preheating temperature of the powder bed of laser

sintering machine and the processing parameters of the birch flour/polyester composite were

determined using single layer sintering method and empirical method. The tensile, flexural and

impact specimens were built in the two scanning laser ways of subarea scan and progressive

scan.The testing results show that the mechanical properties using subarea scan method are

superior to those of progressive scan method and the mechanical properties of the specimens

increase as the laser scan speed decreases. The best mechanical properties of SLS specimens of

brich flour/polyester composite powder were obtained with the following parameters: the laser

power was 11W, layer scan speed was 1800mm/s; layer thickness was 0.1mm; laser scan spacing

was 0.1mm and the average tensile, flexural and impact strength of specimens were 1.35MPa,

3.69Mpa and 0.73KJ/m2 respectively.

Keywords: Birch Flour, Polyester，Selective Laser Sintering

-14-



A Study on the Development of Device for Combination of PE pipe and

Socket

Jeong-hwan Lee1, Seoung-hyeon You1 , Sung-hoon Oh1,#

1 Mechanical system engineering part of Chonbuk national university,

4010room Engineering building No.4 Chonbuk national university Baekjedaero 567 Jeonju city

Jeollabuk do Korea


Abstract

PE pipes for sewerage are constructed by connections with constant length of pipes. To block the

leakage of sewage, connection should be performed under the constant pressure during the related

process. In the existing method, pressurized pipes were inserted after heating socket. The problems

including leakage of sewage were occurred due to the damage or crack on the pipes during the pipe

connection process, or generation of gap as time went on. In this study, stable connection process

between PE pipe and socket was improved by development of connection device. Structure design

and operation type design were performed. By doing these, the potential problems during the

development of prototypes were investigated and prepared in advance. Then, the assembly was

performed with prototypes including extrusion part, pipe supporting part, and rotational part.

Prototypes were developed as the forms to insert the pipes upon rotation under the constant

pressure. The device was developed to connect the pipes of 150~450mm diameter under the

conditions of connection time per socket within 3 minutes and allowable volume within 0.026 for

150mm pipe in the watertight test. Reliability of the device was secured by performing the tests at

the certified institution. From this study, the assembly process of PE pipes for sewerage was

improved. It is anticipated to improve the product credibility resulting in the sales increase. In addition,

technical development skills of the small and medium-sized enterprises could be improved using the

accumulated knowhow upon progression of this technology development.

Keywords: PE pipe, Socket pipe, water-tightness, Coupled device, Automation

Acknowledgement

This study was conducted with the grant of “supporting project for research village” in the auspice

by Small and Medium Business Administration.

-15-


A Study on the Cutting Characteristics during Trimming Process of

CFRP

Seoung-hyeon You1 , Jeong-hwan Lee1, Sung-hoon Oh1,#

1 Mechanical system engineering part of Chonbuk national university,

4010room Engineering building No.4 Chonbuk national university Baekjedaero 567 Jeonju city

Jeollabuk do Korea


Abstract

According to the development of modern industry, weight lightening of machine parts is required

more for the operation under the harsher conditions. CFRP is widely utilized in a variety of machinery

fields due to high specific strength, specific stiffness, erosion resistance, and heat resistance. In

particular, its usages have been expanded to the industries of automobile and aerospace. Parts

using the existing CFRP materials are produced by manual operation or automatic layup and plastic

technology. However, to connect with other parts, they require trimming, milling, and drilling

processes. Many studies have been conducted on drilling while few studies were done on milling or

trimming. In this study, processing characteristics on the process variables were analyzed during the

trimming process of CFRP such as tool form, rotation speed of main axis, conveying speed, and so

on. The results are as follows. Cutting force was the highest at the helix angle 0° and it was

decreased more as the helix angle was higher. Thrust force (Fz) is influenced to flaking during

process of CFRP. Surface roughness showed the tendency to become better quality by increasing

conveying speed under the conditions of 4000rpm and 2500rpm. In view of Burr which is the most

problematic during the process of CFRP, helix angle 45° was found to be the best. Cutting

characteristics by helix angles and processing variables were investigated during trimming process

of CFRP plate. The study results are anticipated to be applied in the process with multiple types of

parts. In addition, the results of this study could be used as the foundation data in the development

of tools for CFRP processing.

Keywords: CFRP, End-mill, Trimming, Surface roughness, Burr, Helix angle

Acknowledgement

This study was conducted with the grant of “supporting project for medium sized researches

(2018R1A2A3074758)” in the auspice by NRF.

-16-


A Study on Fracture Property of Adhesive Interface at Bonding Material

Attached with the Materials of Reinforced Plastic and Foam

Jae-Ung Cho1,#, Jae-Won Kim2

1 Division of Mechanical & Automotive Engineering, Kongju National University, Republic of Korea

2 Department of Mechanical Engineering, Graduate School, Kongju National University, Republic

of Korea


Abstract

Recently, many studies on the production of automobile body using lightweight materials have

been conducted. These lightweight materials frequently have been used with reinforced plastics.

Reinforced plastics have the specific gravity lower than non-metallic materials and have the higher

specific strength and non- stiffness than metallic materials. Adhesive failure properties of the hybrid

material made of lightweight materials were investigated by bonding aluminum foams with these

reinforced plastics. In addition, the specimens were bonded by the structural adhesive widely used

in automobile bodies. In this study, DCB specimens were fabricated by using dissimilar materials

bonded with CFRP and aluminum foam through analytical technique. And the damage test was

performed for the adhesive between the cantilevers by using DCB specimens. The analysis was

carried out at the rate of 3 mm / min in the same manner as the general tensile test. The lower part

was fixed with a pinned cylindrical support and the upper part was applied to a forced displacement.

The maximum reaction force was found to be 735.54 N, and the equivalent stress at maximum

reaction force was 79.08 MPa. When the stress contour in the specimen was observed at this time,

it was found that the highest stress happened at the time when the adhesive breakage started.

Based on these results, it was found that the maximum reaction force appeared just before the

adhesive was broken. The critical energy release rate was utilized to identify the fracture

parameter. It was found that the critical energy release rate appeared as 1235.12 J when the

adhesive was peeled off. Using the study results, we could obtain the data on the adhesive de-

bonding characteristics of the double cantilever beam specimens made of lightweight materials

through the analytical technique.

Keywords: CFRP(Carbon Fiber Reinforced Plastic); Aluminum Foam; DCB(Double Cantilever

Beam); Adhesive; Fracture

-17-


Acknowledgement

This research was supported by Basic Science Research Program through the National

Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and

Technology (2011-0006548). This research was supported by Basic Science Research Program

through the National Research Foundation of Korea (NRF) funded by the Ministry of Education,

Science and Technology (2015R1D1A1A01057607). This work was supported under the

framework of international cooperation program managed by National Research Foundation of

Korea (2016K2A9A2A06004689). This research was supported by Basic Science Research

Program through the National Research Foundation of Korea (NRF) funded by the Ministry of

Education (NRF-2018R1D1A1B07041627).

-18-


A Study on Improving the Energy Efficiency and

Temperature Dispersion of Refrigerator

Jiachen Gao1, Jaeyeol Kim1,# , Yoonsoo Jung1, Eunji Kim1, Jaeho Kim2 and Daeyeong Ha2

1 Department of Mechanical System & Automotive Engineering, Chosun University,

Gwangju 61452, South Korea.

2 G.I.M.Tech Co., Ltd., Gwangju 61089, South Korea.


Abstract

As a popular electronic product every family has at least one refrigerator，even most families use

more than two refrigerators recently. With the strengthening of environmental protection, it is

particularly important to improve the energy saving and reliability of refrigerators. Generally, the cold

air flowing into the freezer compartment is naturally transmitted to the bottom of the refrigerating

compartment. That can lead to the uneven temperature distribution between the interior side and the

door side of the refrigerating compartment. The food stored on the interior side of the refrigerator is

too cold. But the food stored on the door side is slightly higher due to insufficient air conduction,

which shortens the storage time of the food stored in the refrigerator and accelerates the corruption

of the food. In addition, in areas where electricity is insufficient, a cold storage device is required to

maintain the temperature of the refrigeration room when power is cut off. Therefore, in the existing

refrigerator components, there is a lack of a device which cannot only store cold energy but also

improve the temperature distribution of the refrigerator. Accordingly, in order to improve the

temperature distribution and cold storage in the refrigerator, this paper presents an energy storage

device Stereo Air Craft used by PCM, which can be applied to existing plastic or glass shelf directly.

In order to achieve the best improvement, this paper studies the mechanical design of Stereo Air

Craft. Through the structural design and flow simulation of Stereo Air Craft, the optimized design

was realized. When applied to refrigerators, the temperature distribution of the refrigerator was

experimented, which verified the practicability of Stereo Air Craft.

Keywords: Phase Change Material, Stereo Air Craft, Refrigerator, Shelf, Temperature Dispersion

Acknowledgement

This paper was supported by Korea Institute for Advancement of Technology(KIAT) grant funded by

the Korea Government(MOTIE) (P0002092, The Competency Development Program for Industry

Specialist) & “NRF-2016R1D1A1B01014576”

-19-


A Study on Dual Servo System for Ultra Fine Machining

GyungIl Lee1, Jaeyeol Kim1,# and Jiachen Gao 1 , Yoonsoo Jung1, Eunji Kim1

1 Department of Mechanical System & Automotive Engineering, Chosun University,

Gwangju 61452, South Korea.


Abstract

There is an increasing demand for single-point diamond turning to manufacture micro components

as well as micro features on a large workpiece surface. Achieving high precision position control of

the Confucius machine has been a major concern in order to obtain high precision and precise

surface roughness. In this study, a piezoelectric actuator based ultra Fine servo system (FSS) has

been developed and integrated with Global Servo System (GSS). Position detection can be

measured using a laser encoder to accurately measure the straight run error in the GSS system.

The detected error signal is compensated by the FSS system. A feedback position controller has

been implemented and tested through research to improve performance and accuracy. Experimental

results show that the developed FSS system can effectively compensate for errors in the X-axis Y-

axis translation slide of the GSS system.

Keywords: Fine Servo System. Global Servo System. Straight Run Error, Error Signal

Compensation

Acknowledgement

This paper was supported by Korea Institute for Advancement of Technology(KIAT) grant

funded by the Korea Government(MOTIE) (P0002092, The Competency Development

Program for Industry Specialist) & “NRF-2016R1D1A1B01014576

-20-


Mechanical Properties of 3D Printed Tool Steel for Trimming Die

Hochan Kim1,# Sungjong Choi2 and Jongdock Seo3

1 Depart ment of mechanical and automotive endineering, Andong National University, Andong,

Gyungsangbuk-do, 36729, South Korea.

2 Research and Education Center for Reliability, Andong National University, Andong,

Gyungsangbuk-do, 36729, South Korea.

3 Shin Young Co., Ltd., Yeongcheon, Gyeongbuk-do, 38899, South Korea.


Abstract

Lamination manufacturing is attracting attention as a technology that can bring innovation in design

and production technology in various industrial fields. Recently, research is being conducted to

manufacture injection and press molds having a longer life span utilizing metal 3D printing

technology. In this study, a DED device was selected as a lamination method for the production of

trimming die. Two kinds of metal powders (GRINDUR6: G6, Ferro55: F55) were added to the base

metal (S45C) were deposited and their mechanical characteristics were analyzed. The spherical

metal powders of G6 and F55 were 50 ~ 150mm in diameter and stacked according to the zigzag

and helical scan paths. Various specimens were fabricated from the fabricated blocks and

microstructure and defect observation, hardness test, tensile test, pin-on-disc wear test and impact

test were performed. The two metal specimens showed very fine equiaxed protrusions with a size of

10 ~ 20 mm, but the protrusions were observed at the boundary of the melting zone. The Vickers

hardness of G6 and F55 was similarly measured at about 700 HV for both materials. Zigzag and

helical scan path models of the G6 specimens at 1808 MPa and 1828 MPa, respectively. By the

SEM observation, fine voids, blowholes, and grain boundary brittle fracture regions appeared,

indicating a lack of energy density. These results can be used as a basis for the development of 3D

metal printing technology research and hot stamping dies.

Keywords: 3D Printing; Additive Manufacturing; Directed Energy Deposition; DED; 3D Printed Die;

Hot-stamping; Trimming Die;

Acknowledgement

This work was supported by the Technology Innovation Program (20000231, Development of

commercialization technology on low cost and high efficiency trimming die and hot stamping die for

-21-


1500 MPa tensile strength parts by using a hybrid 3D printing technology with heterogeneous metal

material) funded By the Ministry of Trade, Industry & Energy(MOTIE, Korea).

-22-


A Study on Robot Motion in Human-Robot Collaboration for Smart

Factory Safety Implementation

Ryu Hye-Yeon1, KIM Dae-Won1, Lee Kyong-Chang1,# and KIM Hyun-Hee1

1 Department of Control and Instrumentation, Pukyong National University, Korea

# Corresponding Author / E-mail: [email protected], TEL: +82-51-629-6332

Abstract

Smart factory is one of the changes brought about by the 4th Industrial Revolution. It can install IoT

on the facilities and machines in the factory to collect and analyze the process data in real time and

control itself according to the purpose. Smart factory is emerging as a way to solve various

problems in the production site caused by labor cost increase and shortage of skilled workers.

Probably the final goal of smart factory is unmanned production facility, but with current technology,

unmanned automation of all production sites is difficult. This is because people need to manage

automated systems. In addition, if the production process is complicated, such as a shoe upper,

and a variety of materials are involved, human intervention is essential. There are also people who

work at Adidas' ‘Speed Factory’, which can be called the leader of smart factory. Therefore, even

in the case of smart factories, people have to be involved in process management or intervention.

In this process, collaboration between robots and people is essential. The problem is that human

safety can be hindered by robots when collaborating. Most robots are stronger and faster than

people. In fact, human accidents often occur at various production sites where robots are

introduced. Therefore, it is very important to implement human safety in smart factories where

human-robot collaboration takes place. In this study, we propose an algorithm that guarantees

human safety by avoiding or minimizing collision between human and robot by changing robot 's

motion according to human motion. The fastest part of the robot is the end effector, which is the

work part that can cause the greatest harm to humans. In this paper, we check the distance

between the end effector and the human, and the distance that the end effector can stop without

colliding with human when sending the stop signal immediately. Also, an area having the radius as

the distance is defined as an End Effector Area(EEA). The robot should be able to detect human

access at all times when powered on. If human access is confirmed within the safety zone (ISO

15066 standard), the robot calculates the EEA. When a human enters the EEA, he immediately

stops the robot end effector and observes human motion. When a human moves out of the EEA,

the robot is driven at a low speed that can be stopped instantaneously.

Keywords: Smart Factory, Robot Automation, Human-Robot Collaboration, Safety, UWB

-23-


Acknowledgement

This work was supported by the National Research Foundation of Korea(NRF) grant funded by

the Ministry of Education(NRF-2017R1A2B4010448)

-24-


Comparative Study on Conventional Methods and DICOM Methods

Followed for the Hearing aid Shell Production

Hyeong-Gyun Kim 1, Seong-Dae Choi 2,#

1 Department of Radiological Science, Far East University, 76-32 Daehakgil, Gamgok-myeon,

Euseong-gun, Chungbuk-do, Korea

2 Mechanical System Engineering, Kumoh National Institute of Technology, 350-27, Gumi-daero,

Gumi-si, Gyeongsangbuk-do, Korea


Abstract

People who suffer hearing impairment experience difficulties in communicating with other people,

which eventually leads to lower quality of life. Numerous technologies have been applied for a long

time to compensate for this by creating hearing aids. These technologies have evolved into

manufacturing ear shells by making ear impressions, and recently the reproducibility and precision

of manufacturing processes have further improved by modeling technologies converged with 3D

printing. However, as these technologies require ear impressions which can cause human infection

and safety issues, this study aims to test a hearing aid manufacturing technology using DICOM

which does not require ear impressions. To this end, we applied the two methods to fabricate

hearing aids for a patient with moderate hearing impairment and compared the problems. The

results showed that there were no technical differences between them such as feedback, fit, and

occlusion.

Keywords: Hearing Aid; 3D Printing; Ear Impression; DICOM; Feedback

Acknowledgement

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the

Korea government(Ministry of Science and ICT) (No. NRF-2018R1C1B5032146).

-25-


Cam Box Design for a Drum Type of an Automatic Tool Changer with a

Roller Gear Cam

Hyun-Jin Choi1#, Han-Gyu Lee2, Woo-Sub Cha2, Gyeong-Yeon Kim2

1 Machinery & Robot Research Division, Daegu Mechatronics&Materials Institute

2 R&D Dept., Dae Young CoreTech Co.,Ltd


Abstract

An automatic tool changer (ATC) is either a drum type or a chain type. Compared to a chain type,

a drum type has the advantage that the tool magazine operating time is faster and the unit length

becomes shorter, which shortens the overall length of the equipment. Therefore, it can be

developed and applied to various patterns and types according to the number of tools and the size

of the magazine, depending on the type of a machining center and user demand. A drum type of

an automatic tool changer is driven by a cam box with a roller gear cam and a flat plate groove cam.

It has the advantage of improving the price competitiveness of a machining center as compared to

a chain drive type, having a strong structure and a small number of parts, resulting in less A/S. The

function of the cam box is the rotation and vertical repetition motion of the change arm. The

rotational movement is performed by the roller gear cam in the cam box, and the vertical repetition

motion is carried out by the drive of the flat plate groove cam. In this paper, the dynamics analysis

of the cam box's drive instrument mechanism is performed to verify the selection feasibility of the

motor and the reducer by calculating the maximum torque and the rated torque of the motor, and

the maximum contact force of the roller gear cam derived from the dynamic analysis is added to

review the structural design stability.

Keywords: Automatic Tool Changer, Drum Type, Cam Box, Roller Gear Cam, Lift Cam, Dynamic Analysis

Acknowledgement

This work was partly supported by Korea Evaluation Institute of Industrial Technology(KEIT) grant

funded by the Korea government (MOTIE) (No. 20001305)

-26-


A Study on the Process Simulation Analysis of the High Precision Laser

Scriber System

Hyun-Jin Choi1,#, Seong-Dae Choi2

1 Machinery & Robot Research Division, Daegu Mechatronics&Materials Institute

2 School of Mechanical System Engineering Kumoh National Institute of Technology


Abstract

The high-precision laser scriber carries out scribing alumina ceramic substrates for manufacturing

ultra-small chip resistors. The ceramic substrates are loaded, aligned, scribed, transferred, and

unloaded. The entire process is fully automated, thereby minimizing the scribing cycle time of the

ceramic substrates and improving the throughput. The scriber consists of the laser optical system,

pick-up module of ceramic substrates, pre-alignment module, TH axis drive work table, automation

module for substrate loading / unloading, and high-speed scribing control S/W. The loader / unloader

unit, which has the greatest influence on the scribing cycle time of the substrates, carries the

substrates to the work table that carries out the cutting line work by driving the X and Y axes as well

as by adsorbing the ceramic substrates.The loader / unloader unit consists of the magazine up /

down part, X-axis drive part for conveying the substrates to the left and right direction, and the vision

part for detecting the edge of the substrate for the primary pre-alignment of the substrates. In this

paper, the laser scribing machining simulation is performed by applying the instrument mechanism

of each component module. Through this study, the scribing machining process is first verified by

analyzing the process operation and work area of each module in advance. In addition, the scribing

machining process is optimized by comparing and analyzing the scribing cycle time of one ceramic

substrate according to the alignment stage module speed..

Keywords: Laser Scriber, Process Simulation Analysis, Loader / Unloader

Acknowledgement

This work was supported by the Technological Innovation R&D Program (S2570694) funded by the

Ministry of SMEs and Startups (MSS, Korea).

-27-


Development of Polar Component Separation Apparatus with Carbon Fiber Column

Juncheng Zhao1, Shuo Cheng1, Xiangfan Piao1,#

Electronic Information Department, Engineering Institute (Yanbian University), Ministry of Education, Yanji, 133002, China

#Xiangfan Piao / E-mail: [email protected], TEL: +86-0433-2732243

Abstract

Aiming at the shortcomings of sample pretreatment—waste of time, low automation, complex

processes and inaccurate experimental results, this paper designs a polar component separation

device with carbon fiber column based on solid phase extraction, which achieves the purpose of

separating samples according to 3 kinds of polarity. The apparatus is composed of the selection and

quantification part of mobile phase, the sample injection part, the sample enrichment part, the sample

separation part, the sample collection part, and the switching power supply, which includes a stepper

motor drive circuit, a control circuit of microinjection pumps, a control circuit of rotary valve, a

photoelectric coding circuit, a MCU interface circuit, a collection module circuit, a power supply circuit

and so on. Separation experiments were carried out using the strong polar solvent—MeOH:H2O=1:9,

the medium polar solvent—MeOH:H2O=6:4, the weak polar solvent—MeOH:DCM=1:3 and ten kinds

of samples. The results show that the apparatus can effectively separate complex samples according

to 3 kinds of polarity. It has the characteristics of simple operation, short time, high automation, and

saving labor and cost, and has broad application prospects in many fields such as medicine, food,

agriculture and so on.

Key Words: Sample Pretreatment; Solid Phase Extraction; Carbon Fiber Column

-28-


Ultrasound-assisted Liquid-liquid Spray Extraction for the analysis of

Trace-level Persistent Organic Pollutants in water

Han Yeong Kaw1,2, Junlin Li2, Xiangzi Jin2, Xiangfan Piao2,*, Donghao Li2,#

1 Department of Environmental Sciences, Faculty of Environmental Studies,

Universiti Putra Malaysia, Serdang, Malaysia

2 Department of Chemistry, MOE Key Laboratory of Natural Resources of the Changbai Mountain

and Functional Molecules, Yanbian University, Park Road 977, Yanji, China.

*Xiangfan Piao / E-mail: [email protected], TEL:+86-0433-2732243

# Corresponding Author / E-mail: [email protected], TEL: +86-0433-2436456, FAX: +86-0433-2732456

Abstract

Persistent organic pollutants (POPs) can be found at trace concentration in the environment,

especially in different environmental water matrices. Yet, the toxicity of trace-level POPs should not

be neglected as they can bioaccumulate and biomagnify in the food chain, and eventually bring

about detrimental impacts to human health. An ultrasound-assisted liquid-liquid spray extraction

method has been developed for analysing trace concentration of POPs in high-volume water

samples. Well-known POPs including organochlorine pesticides (OCPs) and polycyclic aromatic

hydrocarbons (PAHs) were selected as the analytes in this study. High volume of water samples

were continuously spray injected into the immiscible organic solvent under an acoustic field, which

caused the formation of water microdroplets. The increased interactive surface area and collision

probability between two liquid phases enhanced the mass transfer of analytes into the organic phase,

hence significantly improved extraction efficiency. After optimising the extraction parameters, this

technique was applied for the simultaneous determination of trace-level OCPs and PAHs in

environmental water samples. Results indicated that this method exhibited excellent accuracy and

precision with recoveries ranged from 86.8% to 103.2% and RSD of less than 10.5%. With an

intention to analyse trace concentration of environmental pollutants in large volume of water samples,

this technique is easy to operate, inexpensive, environmentally-friendly (reduced consumption of

organic solvent to extract 10 L water) and effective. The ultrasound-assisted liquid-liquid spray

extraction will be useful in the long-term, in-situ monitoring of contaminants in environmental waters.

Keywords: Ultrasound-assisted; Liquid-liquid Spray Extraction; Persistent Organic Pollutants;

Organochlorine Pesticides; Polycyclic Aromatic Hydrocarbons; Trace; Large Volume

-29-


tel:+86-0433-2732243


A Study on Optimal Design of Drive Gear for Transfer Case

Dongseon Kim1, Zhen Qin1 and Sung-ki Lyu1,#



Abstract

Gears are mechanical element parts with excellent power transmission efficiency and are widely

used in automobile, industrial machinery, aviation industry and machine tools. In order to improve

the performance of the gear, it is necessary to carry out optimization design of the gear geometry.

In this paper, to optimize the geometric tooth profile of helical gears among the gears of the

transfer case gearbox, the gears are modeled using the finite element program, Romax Designer,

to analyze the load and gear teeth of the gearbox power transmission system. The optimized gears

were fabricated and compared with the results of the gear tests.

Keywords: Optimal Design, Drive Gear, Transfer Case, Gear Geometry

Acknowledgement


funded by the MEST(NRF-2016R1D1A1A09920105)

-30-


Sheet Metal Conical Roll-twisting (CRT) Process

for Fabrication of a Spiral Blade

Sanghu Park1# and Seongmoon Yang2

1 School of Mechanical Engineering and ERC/NSDM, Pusan National University, 2,

Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, Korea, 46241

2 Graduate School of Mechanical Engineering, Pusan National University, 2,

Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, Korea, 46241


Abstract

We propose a novel conical roll-twisting (CRT) process to fabricate a metallic Archimedes spiral

blade which has variable curvatures on its surface, and it is a key element of a novel wind power

generator having a remarkably higher efficiency of about 34% compared with conventional wind

power systems. The CRT system consists of a pair of conical rollers (upper and lower sides) and

cylindrical twist-bending rollers in the both lateral sides. With the help of forming analysis results,

multi-step regional forming method was utilized to fabricate the blade. Also, the process parameters

were optimized by a response surface methodology. In this work, we installed the experimental

equipment of CRT process, and it was experimentally proven that the developed CRT process was

capable of producing a spiral blade with a shape error less than approximately 5%. Furthermore, we

believe that the CRT process can be utilized to fabricate diverse sheet metal structures having

continuously changing curvatures for various applications.

Keywords: Archimedes Wind Power Generator, Spiral Blade, Roll-twist-bending (RTB), Multi-stage Forming Process,

Response Surface Methodology

Acknowledgement

This work was supported partially by LG Electronics research funds in Korea. Thanks for their

supports.

-31-


A Study on the Heating System of Hot Water Panel

Dong-Hyun Cho1,#, Myeong-Gi Jo2

1The University of Daejin, 1007, Hogukro, Pocheonsi, Gyeinggodo, 11159, Rep. of Korea

2 OnsuTech Co., Ltd. 27 Eunggol 1gil, Soheul-eup, Pocheonsi, Gyeinggodo, 11182, Rep. of Korea


Abstract

Domestic and foreign winter room heating systems (hot water boilers, etc.) of existing houses,

offices, pensions, etc., are mainly supplied to buildings in which they are utilized for spaces with

areas not smaller than 8 pyon and the heating technology is implemented by air circulation

convection heat transfer method. Since the demand for construction of spaces smaller than 2 pyong

such as pensions and hwangtobangs is gradually increasing, the development of room heating

system technology suitable for spaces smaller than 2 pyong is acutely required. However, the

development of such technologies is insufficient now. Therefore, in this study, a heating system

(indoor wall-hanging type hot water boiler) which enables radiation heating for the first time at home

and abroad. In this study, experiments were conducted with bearing type hot water circulation pumps

and underwater key type hot water circulation pumps to select a hot water circulation pump. The

experiments were conducted in the hot water temperature range of the hot water supplied to room

heating ondol panels. The temperature rise rate of the hot water circulation pump of the underwater

key type is higher than that of the bearing type. The temperature of hot water rose over heating time.

The temperature rising rate of the underwater key type was shown to be higher than that of the

bearing type. Based on the results of this study as such, compared to the forced convection heating

system where the air is forced to circulate by the air conditioner, the radiation heating system

implemented more comfortable heating because it implements room heating or cooling with air

movement or circulation. In addition, the study of room heating system accessories suitable for

spaces smaller than 2 pyong greatly contributed to the saving of electric power energy and the

reduction of manufacturing costs.

Keywords: Panel, Hot Water, Heating System, Performance, Heat Transfer, Heat Flux

Acknowledgement

This research was supported by Leap Technological Development Project funded the Department

of Small & Medium Venture Business (S2658998)

-32-


Study on the Structural Analysis of Plunger Hinge according to the

Structure of Press Power Transfer Unit

Chul Woo Park1, Boo Youn Lee2,# and Han Yong Lee3

1 Machinery & Robot Research Division Daegu Mechatronics & Materials Institute, 12, Horim-dong,

Dalseo-gu, Daegu, South Korea, 42714

2 Dept. of Mechanical & Automotive Engineering, Keimyung University, 1095, Dalgubeoldaero,

Daegu, South Korea, 42601

3 IDS Co., LTD, 140,Technojungang-daero, Yuga-myeon, Dalseong-gun, Daegu, South Korea,

43028


Abstract

Lightweight vehicle technology has been required to improve the fuel efficiency of vehicles these

days. Accordingly, there is increasing technology requirement for high tensile steel molding

process using a press. The molding of high tensile steel requires spring-back prevention

technology, and high rigidity & high precision performance in the press. In this study, power

transfer system to implement high rigidity of press was compared and verified through mechanism

and structural analysis. Presses are classified into crank, crankless and knuckle press according to

their power transfer method. In this paper, comparative study was performed for power transfer

structures to crankless and knuckle presses. Mechanism analysis used to interpret the kinematic

characteristics of slide frame and the reaction force generate from each hinge. In addition, using

the results from mechanism analysis, structural analysis was conducted to analyze the stress from

connecting rod and plunger assembly at the time of maximum load. According to mechanism

analysis, the reaction force generated at the power transfer joint under the same load was 4.23

e6N for knuckle press, which is around 5.6%, and structural analysis was conducted based on this

result. The hinge structure design of knuckle press was excessively strong compared to crankless

press, and the structural analysis results show that power transfer unit of crankless press has large

value. The structural analysis showed that reaction stresses of plunger hinge in both cases are

negligible, and there would be no problem with durability and reliability. It is expected that power

transfer efficiency improvement would be possible through design optimization of knuckle press

connecting rod and plunger assembly when designing press using the analysis results.

Keywords: Press, Knuckle Press, Crankless Press, Springback.

-33-


Acknowledgement

This paper is the results of the research conducted with the support of SME Technology

Development Support Project’s Export Company Technology Development Project (Project

Number: S2646126).

-34-


Study on the Static Stiffness of Dual Head Scroll Lapping Machine

Chul Woo Park1, Boo Youn Lee2,# and Chang Ho Kim3

1 Machinery & Robot Research Division Daegu Mechatronics & Materials Institute, 12, Horim-dong,

Dalseo-gu, Daegu, South Korea, 42714

2 Dept. of Mechanical & Automotive Engineering, Keimyung University, 1095, Dalgubeoldaero,


3 Tae Sung Technology Co., LTD, Techno Circulation Route 1 Road Yugamyeon , Dalseong Gun



Abstract

Automobile mounted compressors are changing from rotary compressor to scroll compressor to

improve fuel efficiency and effectiveness of vehicles. Scroll compressors have higher efficiency

than conventional ones, and also have advantages of low vibration and low noise. In addition, it

also has advantages of less number of parts, smaller size and lighter weight than conventional

compressors. The performance of scroll compressor depends on the initial quality of adhesion of

contact surfaces between fixed and rotating scroll, which are the key parts. Lapping process is

essential to improve this initial quality. Lapping process is a process that applies lapping agent

between components and make relative motion to remove chip at the scroll surface, and to

improve surface roughness by lapping agent. It is the purpose of this study to investigate the static

stiffness characteristics of the equipment designed for lapping process through structural analysis.

Structural analysis was performed for modal analysis of lapping machine, deflection by its own

weight, and by applying cutting force to main axis. Modal analysis showed that 1st mode was 48.4

Hz which is higher than machine operation speed. Because the main axis is protruded type, self-

weight direction analysis shows that the deformation in the direction of self-weight was 0.09 mm,

which is quite high. The analysis result when cutting force is applied to main axis, axial deformation

was 0.83 mm, which was less than deformation by self-weight, but still a large value. The induced

stresses were negligible for both cases, and there will be no problem with structural durability.

Additional design change is considered to be necessary for structural changes to minimize the

deformation value.

Keywords: Compressor, Scroll Parts, Lapping, High efficiency.

-35-


Acknowledgement

This paper is the results of the research conducted by Local Initiated Technology Development

Project (P0007237) of Regional Cooperative Industry Foster Project sponsored by the Ministry of

Commerce, Industry & Energy and Korea Institute for Advancement of Technology.

-36-


Analysis of Fracture Toughness of Carbon Composite according to

Fiber Orientation using Infrared Thermography

Sun-Ho Go1, Min-Sang Lee1, Chang-Ki Hong2, Lee-Ku Kwac3, Hong-Gun Kim3,#

1 Graduate School of Mechanical Engineering, Jeonju University, Jeonju, Korea

2 Graduate School of Carbon Fusion Engineering, Jeonju University, Jeonju, Korea

3 Department of Mechanical and Automotive Engineering, Jeonju University, Jeonju, Korea


Abstract

Carbon fiber reinforced plastics are composites containing carbon fiber reinforced materials with

high mechanical properties, electrical properties and chemical stability. Due to their higher specific

stiffness and higher specific strength, they have been applied to various fields requiring weight

reduction. However, it is very difficult to theoretically interpret the material properties due to the

stacking anisotropic material depending on the loading direction and lamination direction.

Therefore, the investigation of the fracture characteristics of laminated composites is known to be

an important factor to be considered for structural applications. The fracture toughness test specimens

used in this study were laminated at 0°, 0°/90° and + 45° /-45° orientations using Uni-directional

carbon prepreg. The composites were formed by autoclave method. According to ASTM D 5045, the

experiments, the analysis and examination were conducted. At the same time, the temperature

distribution and data from the test specimens during the test were obtained and analyzed using a

thermal camera. After the test, the validation check defined in the specification was first performed.

For 0 ° and + 45 ° / -45 ° specimens, the ratio of Pmax / PQ was found to be 1.1 or more and it

was identified as Unacceptable. For 0 ° / 90 ° test specimens, the ratio of Pmax / PQ was less than

1.1, indicating Acceptable mode. In the 0 ° test specimen which was identified as unacceptable mode,

there was no fiber supported in the shear direction during the test. In the + 45 ° / -45 ° test specimens,

the carbon fibers are stacked in the direction of ± 45 ° of the load, so that the failure mode due to

peeling of the matrix appears. These judgments were confirmed by the thermal imaging camera and

SEM analysis. Only the remaining 0° / 90° specimens were found to give the proper results as defined

in the specifications, and the result of KIC was 101.53 MPa.m^1/2, which is about 1.5 times higher

than other orientations.

As a result, it was confirmed that the direction of lamination of carbon fibers is a very important

factor for increasing the fracture toughness of the carbon composite material. Also, the fracture

-37-


toughness test during the design of composite material will ensure the soundness of the structural

design.

Keywords: Carbon Fiber Reinforced Plastics; Fracture Thoughness; Fiber Orientation; Infrared

Thermography

Acknowledgement

This research was supported by the National Foundation of korea(NRF) grant funded by the korea

government (MISP) (No. 2017R1A2B4009646) and National Research Foundation of Korea(NRF)

funded by the Ministry of Education(No. 2016R1A6A03012069)

-38-


Design and Production of 24 Sets of Horizontal Vertical Diffusion Tank

Compatible Test System

Mengyan Gao1, Xiangfan Piao2,#

1 Electronic Information Department, Engineering Institute Yanbian University,

2 Ministry of Education, Yanji, 133002, China

#Xiangfan Piao / E-mail: [email protected], TEL:+86-0433-2732243

Abstract

The primary method of in vitro diffusion testing of transdermal formulations is the diffusion cell

method. Transdermal absorption experiments must be carried out in a simulated in vivo environment

before the new transdermal skin drug is put on the market. In order to improve the working efficiency

of the diffusion cell, this paper developed a 24-group vertical and horizontal diffusion cell

compatibility diffusion system. The system increases the sampling port of the diffusion cell, increases

the effective diffusion area, reduces the volume of the diffusion cell, and fixes the two diffusion cells

with special steel clips. Using a dry heater and attaching it to the bottom of the heating block is for

heating to reduce the system volume. The system uses 102 coils to generate a rotating magnetic

field, magnetic stirring by rotating magnetic field, to realize the rotation and speed control of the

stirring rod, thereby achieving the purpose of evenly mixing the reactants in the diffusion pool, and

overcoming the large volume of the conventional DC motor, such as: the driving brush has large

volume, short life and high noise, and achieves the characteristics of high stirring, uniform mixing

and strong controllability. In addition, more sets of transdermal diffusion samples can be processed

in the same time.

Keywords: Compatibility; Transdermal Diffuser; Transdermal Drug Delivery

-39-


Design of Combined System of Multi-channel Liquid Phase

Microextraction System and Gas Chromatography

Xinjie Zhang1, Xiangfan Piao2,#

1 Electronic Information Department, Engineering Institute, Yanbian University

2Ministry of Education, Yanji, 133002, China

#Xiangfan Piao / E-mail: [email protected], TEL:+86-0433-2732243

Abstract

The combined system of multi-channel liquid phase microextraction system and the gas

chromatography realizes simultaneous pretreatment of multiple sets of samples, which greatly

reduces the time and effort required for sample pretreatment. Moreover, the system is designed to

automate the injection of gas chromatography, which reduces unnecessary errors caused by manual

operation in the experimental process. In addition, the system uses a combination of technology and

inerts gas properties to rapidly squeeze the sample to be tested into the gas chromatograph inlet by

high pressure, which combines gas chromatography and multi-channel liquid phase microextraction

system. In the experiment, the extraction solvent instrument internal standard was added to the

sample cannula, and the inner cannula was placed in a gas phase bottle and placed on the GC

automatic sample introduction stage to start extraction. Finally, the comparison between the

experimental group and the control group by GC-MS analysis showed that the average recovery of

the system was higher than 70%, and the relative standard deviation between channels was below

15%.

Keywords: Multichannel Lliquid Phase Microextraction; Gas Chromatography; Combined

-40-


tel:+86-0433-2732243


A Study on Optimization of Ball End-mill Geometry Using FEM

Jong Min Lee1, Tae Jo Ko1, #, Ye In Kwak1, Farooq Ahmed1

1 School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si,

Gyeongsangbuk-do 712-749, South Korea


Abstract

The purpose of this study is to observe how the cutting force and cutting temperature occur as the

geometry conditions change of the ball end-mill and optimize of end-mill’s geometry. The parameters

of ball end-mill are very diverse, some factors have a profound effect on cutting force and cutting

temperature. This study focuses on the rake angle, relief angle, and helix angle of Ball end-mill

geometry as main parameters. Each factors are made up of 5 levels and Taguchi method is used to

make 25 analysis conditions for geometry optimization. Cutting tool is 2 flute ball end-mill which

diameter is 2 mm and material is Wo/Co, workpiece is SKD61( 52) which has 25 degree inclined.

The Advantedge simulation software was used to optimize of ball end-mill geometry. in addition, real

tool are manufactured for verifying reliability of FEM software, compare the finite element analysis

with the actual machining.

Keywords: Ball End-mill, FEM, Cutting Force, Cutting Temperature, Geometry Optimization

Acknowledgement

This work was supported by the Technology Innovation Program or Industrial Strategic Technology

Development Program (10067064, Development of tungsten carbide and PCD tools for high-quality

finishing of high-precision parts and molds) funded by the Ministry of Trade, Industry & Energy

(MOTIE, Korea)

-41-


Effective Burr Removal Mechanism During Drilling of CFRP using

Helical Groove Drill Bit

Zhen Yu1, Tae Jo Ko1, # and Ki Moon Park1

1 School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si,

Gyeongsangbuk-do 712-749, South Korea

# Corresponding Author / E-mail: [email protected], TEL: +82-53-810-3836, FAX: +82-53-810-4627 (Arial 9)

Abstract:

Drilling holes on carbon fiber reinforced plastics (CFRP) is the most common method during

assembly of aircraft components. However, the burrs around hole are easily generated due to the

anisotropic nature of the CFRP. It is a major problem that many researchers are finding a method to

minimize the burr formation or removal. Based on the burr generation mechanism, this paper

presents a new helical groove attached drill bit for drilling of CFRP. In addition, the three-dimensional

cutting model was also established based on the new drill bit, and the burr removal mechanism was

analyzed. Two cutting operations, namely drilling and deburring, were performed sequentially with

the new structure drill bit. During drilling, the helical cutting edge removed the burrs attached at the

entrance and exit of the hole while tool in-feeding and retracting from the hole. Further, the

performance of the new drill bit was evaluated in terms of thrust force, surface roughness, burr

morphology, and burr removal. The experimental results showed that the new structure drill bit can

greatly improve the hole quality with improved burr removal rate.

Keywords: CFRP; Drilling; Burr; Delamination; Helical Groove

Acknowledgement

This work was supported by the Technology Innovation Program (10053248, Development of

Manufacturing System for CFRP (Carbon Fiber Reinforced Plastics) Machining), which is funded by

the Ministry of Trade, Industry & Energy (MOTIE, Korea).

-42-


Optimization of Temperature Control System

for 3-D Curved Cover-glass Molded Shapes

Soon Uk KIM1 and Seong Dae CHOI2,#

1 Addfine Technology co., LTD., 161-5 Gongdan-Ro, Gumi City, Gyeongbuk, Republic of Korea.

2 Department of Mechanical System Engineering, Kumoh National Institute of Technology,

61 Daehak-Ro, Gumi City, Gyeongbuk, Republic of Korea.


Abstract

The three-dimensional cover glass is constructed using the RVCP process, which proceeds in the

weight-absorbing-rolling press-west cooling phase, when the glass reaches the softening point

through heating. What is important in the RVCP technique is the process of glass input, vacuum and

roll at the correct temperature point. In order to make up for the disadvantages of the gravity system

of itself, a cooling device for prolonging the life of NIR Lamp by high temperature heating is designed

and applied to provide a curved surface shape in molding to a suction mold. To gradually apply an

air-cooled cooling function to control a problem to be restored during cooling. In order to improve

heat transfer characteristics, a large-sized (more than 900 mm in length) material to which a material

of SUS304 and a material of Ceramic (silicon carbide) are applied is requested to a processing

maker.

Keywords: 3-D Curved Cover-Glass Mold, RVCP (Re-heat Vacuum Cold mold Press) process, NIR

Lamp, Large-sized Glass

Acknowledgement

This work was supported by the Technology Innovation Program (20005790) funded By the Ministry

of Trade, Industry & Energy (MOTIE, Korea).

-43-


Study on Vibration analysis and Control of a Machine Tool

Gi Man KIM1 and Seong Dae Choi1,#


61 Daehak-Ro, Gumi City, Gyeongbuk, Republic of Korea.


Abstract

Machines used in industrial fields are influenced by vibrations that induce and occur around them.

In the case of machine tools, vibrations being induced by the internal and the external sources are

regarded as major hazardous factors for the accuracy of machining. Therefore, a reduction method

of vibration predicted during operation is an important design element. The methods of the vibrations

control in machines are mentioned as follows;

1. Redesign of the physical properties of the vibrator and the vibration receiving part

2. The vibration isolation between the vibrators and the vibration receiving part

3. Reduction of vibration through dynamic damper

There are many examples that can be achieved through three major methods:

In this research, the flow of vibration energy to each connected structure is analyzed through a

theoretical model for vibration predicted during operation of a machine structure manufactured by a

complicated combination, and various control conditions are studied for energy transmitted in each

part.

Keywords: Machine Tool, Vibration, Dynamic Damper, Controlling the Vibrations

Acknowledgement

This paper was supported by Kumoh National Institute of Technology.

-44-


Development of automatic attachment device

for Display Driver IC Protection of Thin Film Metal Foil

Young Hyung KIM1 and Seong Dae CHOI2,#

1 Department of IT Convergence, Kumoh National Institute of Technology,

61 Daehak-Ro, Gumi City, Gyeongbuk, Korea.


61 Daehak-Ro, Gumi City, Gyeongbuk, Korea.


Abstract

DDI stands for Display Driver IC (Integrated Circuit) and is a small semiconductor chip that is used

to operate numerous pixels that make up displays such as OLED and LCD. Signals for display to

express information on screen are sent to panel via DDI through circuit board called PCB. At this

point, the DDI orders each pixel to act. DDI controls pixels through TFT (Thin Film Transistor) inside

a display panel, rather than issuing commands to pixels directly. To ensure stable operation of DDI,

protective film that shields electromagnetic waves around the DDI (Chip on Film) is required. In

addition to electromagnetic shielding, these protective films have recently been attached to the DDI

with shielding of metal (mainly copper) materials that have EMI shielding function and circuit

protection function. In this study, EMI shielding film attachment to COF is developed to ensure that

it is accurate, fast and economically feasible.

Keywords: Display Driver IC, EMI Shielding Film, Automatic Attachment Device

Acknowledgement

This research is the result of support as part of the production technology commercialization support

project (transfer technology commercialization) organized by the Korea Industrial Complex

Corporation.

-45-


Finite Element Simulation for Characterization of Laser Melting

Deposition

Gyeong Yun Baek 1,2 and Do-Sik Shim3,#

1 Department of Mechanical Engineering, Chonnam National Univ., 77 Yongbong-ro, Buk-gu,

Gwangju 500-757, South Korea

2 Smart Manufacturing Process Technology Center, KITECH, Wolchul-dong, Buk-gu, Gwangju

500-460, South Korea

3 Department of Ocean Advanced Materials Convergence, Korea Maritime and Ocean University,

727 Taejong-ro, Yeongdo-Gu, Busan 49112, South Korea


Abstract

Write English abstract here. Abstract is to give a clear indication of the objective, scope, and results

of the paper and is to be 400 words maximum. It should be placed in the third space under the author

names. All of the text should be centered within the width. You are not allowed to include tables and

charts within your abstract.

Keywords: List the keywords covered in your paper; Use semicolon to separate keywords; Upper

case at the beginning of each keyword. Keywords should be written in English.

Acknowledgement

Authors may express their gratitude in Acknowledgement section, if they want. Acknowledgement

should be written in English

-46-


A Study on Tactile Sensor-Based Gripper Control System

Ki-min Jeong1, Hyun-Hee Kim1 Kyung-Chang Lee1#

1 Pukyong National University, Busan, Korea


Abstract

Recently, the manufacturing industry has been automated and the field of robot application has been

expanding. In order to apply robots to various industrial fields, it is necessary to study the phage of

robot gripper. This study uses a tactile sensor that is sensitive to external stimuli for precise control

of the gripper. A tactile sensor attached to the gripper finger signals information generated in the

object phage and is transmitted to the controller. The designed tactile sensor-based gripper control

system converts information to external force into data. The signals of the tactile sensors are

feedback. It is possible to identify the condition of the gripper and contact with objects, etc. The

information of the object is analyzed and grasped based on the tactile sensor. In the future, research

is carried out to correct slip phenomena occurring in object phage.

Keywords: Tactile Sensor, Gripper, Robot Grasping, Gripper Control, Signal Processing

Acknowledgement

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the

Ministry of Education the Ministry of Education(NRF-2016R1A6A3A11931489).

-47-


Research on Positioning Error Compensation System of Ball Screw

Feed Drive Machine Tool

Zhen Qin1, Dongseon Kim1, Zhe-zhu Xu2 and Sung-ki Lyu1,#


2 University of Alberta, Edmonton, 7f ECERF, U of A, Edmonton, AB, Alberta, Canada


Abstract

Ball screws are used in a wide variety of applications as a high precision feed drive system. A high

speed ball screw system generates more heat naturally and resultant more thermal expansion, which

adversely affects the accuracy of positioning. Therefore, an air cooling system was set in ball screw

shaft in this paper to dominate the thermal error and achieve temperature equilibrium faster. In order

to estimate the thermal error of ball screw system and effectiveness of air cooling system, thermal

behavior models of finite element method and modified lumped capacitance method were developed

separately which includes the heat generation power of the main heat source of the ball screw

system and other boundary conditions. The completed models were used to simulate the

temperature distribution, thermal deformation and air cooling performance. Compared with

experiments, it is shown that these methods can well predict the air cooling performance.

Keywords: Ball Screw, Thermal Error, Error Compensation, FEM, Calculation Method

Acknowledgement


funded by the MEST(NRF-2016R1D1A1A09920105)

-48-


Stress Analysis of Asymmetric Gears

Tomoya MASUYAMA1,#

1 National Institute of Technology, Tsuruoka College, JAPAN

104 Sawada, Ino-oka, Tsuruoka


Abstract

According to the ISO standard, tooth profile have a symmetric form and the pressure angle is 20

degrees. However, in general, gear pairs transmit different torque in one side face and the other side.

Therefore, necessity of symmetric form is low. Asymmetric profiles are expected highly freedom of

design of gears and they will enhance the load carrying capacity. In this study, considering the

bending stress history during gear rotation, the tooth root stress of various tooth profiles and each

meshing point by finite element method was calculated. As a result, not only the stress caused by

attracting tooth loading, compressive stress is produced by the load on the adjacent tooth. To clarify

the effect of adjacent tooth loading, stress ratio R was taken into the strength evaluation. It is known

that, stress ratio R of an ISO standard tooth profile at tooth fillet is -0.05 and R of an asymmetric

tooth profile at tooth fillet is -0.67. When evaluating load carrying capacity of gears, fatigue strength

of material is modified by using the Goodman diagram to considering the influence of stress ratio R.

Smaller R brings lower fatigue strength. Finally, we found the greatest torque capacity was at a

pressure angle 30 degrees. Furthermore, in the case of a tooth space is narrow, Influence of stress

ratio R is large. Reduced bending stress because of an increase in tooth thickness and decreased

the transmission torque capacity because of a reduction in the base circle radius and the

compressible stress on tooth fillet.

Keywords: Gear, Asymmetric Tooth Profile, Stress, Load Carrying Capacity

-49-


Gear Whine with Virtual Designed Gearbox

Jiha Kim1,#, Seungwon Jeong 1

1Romax Technology Limited, Nottingham NG7 2PZ, United Kingdom

# Corresponding Author / E-mail: [email protected], TEL: ++44 (0)115-951-8800, FAX: ++44 (0)115-951-8800

Abstract

In automotive application, gear whine is a main unpleasant noise which is noticeable to passengers

even at relatively low levels. It is widely recognized that the characteristic gear whine is generated

by a constant harmonic displacement excitation, caused by errors in the actual tooth position with its

perfect tooth position, which is called Transmission Error (TE). 1 The vibrations excited by the TE

are transmitted through the gears, bearing under gears and shafts to the main bearings where they

are coupled to the housing and produce acoustic radiation. Much effort has been made to reduce

TE, hence decrease gear whine. However, TE has complex causes such as manufacturing and

assembly imperfection and elastic deflection of shafts, bearing and gear tooth itself, and housing

deformation. Moreover, gear whine is a tightly system dependent noise which means a slight change

in any parts of gearbox may lead to different system resonant frequency. Therefore, system-level

investigation is necessary to guarantee the accuracy and reliability of design.

Bearing act as a spring with mass in transmitting vibration and its stiffness directly affect vibration

level from internal shaft to the housing which will finally radiate as a noise. 2,3Nonlinear stiffness of

bearing may be decided by macro and micro geometry, applied load, assembly conditions, etc. This

paper will simulate the bearing preload effect on system response of specified TE excitation with one

virtual-designed 5-speed manual transmission gearbox.

Keywords: Gear Whine, Transmission Error, Bearing Preload, Romaxdesigner

-50-


A Study on the Calculation Method of Ball Screw Feed Drive

Xiaojing Liu1 and Zhezhu Xu1,#

1 University of Alberta, Edmonton, 7f ECERF, U of A, Edmonton, AB, Alberta, Canada # #

Corresponding Author / E-mail: [email protected], TEL: +1-10-9633-8848, FAX: +1-10-9633-8848

Abstract

According to requirement of development of precision manufacturing industries, accuracy of

machine tools was became a key issue in this field. One of the critical factor that affect the accuracy

of machine tool is the feed system which driven by a ball screw in general. Basically, in order to

improve the performance of feed drive system which will thermally extended on length direction by

continuous usage, thermal error compensation system which is highly dependent on the feedback

temperature or positioning data was employed in a machine tool system. Due to the overdependence

on measuring technology, cost of compensation system and low productivity level is an inevitable

problem in machine tool industries. This paper presents a novel method in feed drive thermal error

compensation system which could able to compensate thermal error without positioning or

temperature feedback. In this thermal error compensation system, heat generation of components,

principal of compensation, thermal model, mathematic model and calculation method were

discussed respectively. As the results, the test data can confirm the correctness of the developed

feed drive thermal error compensation system very well.

Keywords: Ball Screw, Thermal Error, Feed Drive, Error Compensation, Calculation Method

-51-


Performance of EDM assisted Milling based on a Novel Tool

Changping Li1#, Shujian Li1, Pengnan Li1, Qiulin Niu1, Xinyi Qiu1 and Tae Jo Ko2#

1 School of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan

411201, China

2 School of Mechanical Engineering, Yeungnam University, Dae-dong, 38541, South Korea

# Corresponding Author / E-mail: [email protected], TEL: +86-0731-58290847

Abstract

Electro discharge machining (EDM) assisted milling is an effective method for cutting difficult-to-

machine materials. A new tool for EDM-assisted milling was developed in this study. The tool

consists of two cemented carbide inserts and two copper electrodes. The cemented carbide inserts

can easily milling materials melted by EDM. The new tool makes the discharge energy easier to

control than the traditional milling cutter. This study investigates machined surface on high strength

steel. In this study, the experiment of milling high strength steel (STD11, HRC 60) was carried out

using the new tool and traditional milling cutters. In addition, tool wear, surface roughness and cutting

force were investigated. It is shown that the EDM assisted milling with new tool may reduce the tool

wear and cutting force than traditional milling. Furthermore, the surface roughness has also been

greatly improved.

Keywords: EDM assisted milling; New tool; Tool wear; Surface roughness

Acknowledgement

This work was supported by the General Project of Hunan Education Department (No. 18C0323)

and the School-level Scientific Research Projects of HNUST (No. E51781).

-52-


Pull-off Test and Analysis of CFRP Hat-shaped Structure

Shujian Li1#, Pengnan Li1, Changping Li1, Qiulin Niu1 and Tae Jo Ko2


411201, China

2 School of Mechanical Engineering, Yeungnam University, Dae-dong, 38541, South Korea


Abstract

As a kind of typical structure, the hat-shaped structure (HSS) is widely used in carbon fiber reinforced

plastics (CFRP) aircraft parts. In this work, two cases of force analysis of R-regions in HSS under

pull-off load were presented. Based on the commercial software ABAQUS, a finite element model

was developed to study the failure behavior of R-regions in HSS. A series of HSS samples were

fabricated by co-curing process. The pull-off tests of HSS were conducted to validate the finite

element model, and the failure mechanism of R-regions was further studied by characterizing the

macro-microstructure of R-regions in HSS under pull-off load. Results showed that the structural

bearing capacity of HSS can be improved by strengthening in R-regions. After strengthening in R-

regions, the pull-off load was borne by multiple interfaces, and the interlaminar interface pull-off

strength can increase by 38.8%.

Keywords: CFRP; Failure analysis; Hat-shaped structure; Pull-off load

Acknowledgement

This work was supported by the National Natural Science Foundation of China (No. 51775184 and

No. 51605161), the Excellent Youth Project of Hunan Education Department (No. 18B382) and the

General Project of Hunan Education Department (No. 18C0306).

-53-


Tool Structure Optimization Based on Edge Force Coefficient

Xinyi Qiu1, Pengnan Li1#, Anhua Chen2 and Changping Li1


411201, China

2 Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan

University of Science and Technology, Xiangtan 411201, China


Abstract

In the process of CFRP drilling, the thrust force is the key factor to cause delamination. According

to the characteristics of the time-varying curve of the thrust force of a straight-edged drill, the

method of predicting the key inflection points on the time-varying curve of the thrust force is

proposed. The results show that the time-varying curve of the thrust force of a straight-edged drill

can be better predicted, and the thrust force increases linearly when the straight-edge cuts in. The

distribution of the thrust force on the main cutting edge of a typical straight-edge drill (double point

angle drill) is analyzed to study the influence of processing parameters on the edge force

coefficient, to establish the equation of the thrust force based on the edge force coefficient, to

research the influence of the change of the main cutting edge on the thrust force and to provide a

reference for design of special drilling tools for CFRP.

Keywords: CFRP; Drilling; Thrust force; Edge force coefficient

Acknowledgement

The work is supported by the National Natural Science Foundation of China (No. 51775184,

No.51275168, No.51605161), and supported by the Hunan provincial Natural Science Foundation

of China (No.2015JJ5028).

-54-


Study on Effect of Vibration Amplitude on Cutting Performance of

SiCp/Al Composites during Ultrasonic Vibration assisted Milling

Lu Jing1, Qiulin Niu1#, Chunhao Wang1, Daohui Xiang1, Xiao Liu1


411201, China


Abstract

The effect of amplitude on the machinability of SiCp/Al composites during high speed milling was

studied by means of ultrasonic vibration assisted machining. The results show that the influence of

amplitude on cutting force is small, and the cutting force increases slowly with the increase of

amplitude. However, when the amplitude is 3μm, the cutting force is abrupt. At this time, the

surface roughness value changes particularly obvious, the surface appears a large number of

matrix material coating phenomenon. On the other hand, with the increase of amplitude, the

surface morphology deteriorates further, the pit becomes larger and a large number of microcracks

appear. The bending degree of chips gradually decreases with the increase of amplitude, but the

macroscopic morphology of chips is more irregular, and a large number of serious cracks appear

on the smooth surface of chips. The results show that the amplitude of no more than 3μm is an

important parameter to improve the milling machinability of SiCp/Al composites.

Keywords: SiCp/Al composites, Milling, Vibration Amplitude, Cutting Performance

-55-


A Study on the Analysis of Flow Rate According to Proper

Discharge Rate of Drainage Pump and the Body Bolt Hole Shape for the

Crossing of River a Test of Combat Equipment

Dae Un Kim1,#, Gwi Tae Moon1, Chang Hyun Cho1, Ki Joong Lee1

1 Consolidated Maintenance Depot Republic of Korea Army, St. Uichang-daero 783, Dong-eup,

Uichang-gu Changwon-si Gyeongsangnam-do Republic of Korea.


Abstract

Army combat equipment often has to cross rivers over terrain conditions, and rivers with low depths

and narrow widths are designed to cross over on their own. The most important thing is to minimize

the inflow of water first, and secondly, to discharge the inflow water using a drainage pump. The

purpose of this study is to investigate the importance of bolt and drain pump discharge to the outside

of Army combat equipment body. First, assuming that 5/8 inch bolt fastening is missing, we

investigated the amount of water inflow according to the shape of the hole through fluid analysis and

experiment. As a rssult, it was confirmed that the water inflow amount of the bolt hole of the helical

shape is smaller than that of the straight bolt hole. It can be seen that the flow energy losses were

caused by the vortex caused by the thread. It was also found that there is a risk that if one is

immersed in water for a long time, only one bolt hole could flood the combat equipment sufficiently.

Secondly, we compared the discharge amount per minute and the amount of water flowing from the

virtual bolt hole to check the importance of the drain pump. As a result, the amount of water flowing

in a maximum of 10 blot hole and the discharge amount of the drain pump were equalized. The

results show that even a single bolt hole can flood the combat equipment, so it is necessary to check

and care for the maintenance. In addition, since the operation of the drainage pump can prevent

flooding of the combat equipment with respect to the inflow of water below a certain level, it is

confirmed that the discharge amount of the drainage pump is also important to check.

Keywords: Army combat equipment, Vortex, Thread, Bolt hole, Drainage pump, Flooding,

Discharge, Maintenance

Acknowledgement

This study has received technical advice on research direction from the Director of Military Executive

Agency and engineering approach from the Head of Research Center.

-56-


Classification of non-coding regions in DNA using Deep learning

Hilal Tayara1 and Kil To Chong2,#

1 Department of Electronics and Information Engineering, Chonbuk National University, Jeonju

54896, South Korea

2 Advanced Electronics and Information Research Center, Chonbuk National University, Jeonju

54896, South Korea


Abstract

Understanding the function of non-coding DNA regions is import in the field of genomics as these

regions occupy 98% of the human genome and responsible for 93% of disease-associated variants.

However, this task is a challenging one because the function of the majority of these regions is still

not understood well. In this work, we introduce a computational model of the non-coding DNA regions

using deep learning. The proposed system learns a regulatory sequence code from large-scale

chromatin profiling datasets including DNase I sensitivity, histone-mark and transcription factor

binding sites. Our proposed system is based on an adapted version of Inception model which was

basically designed for image classification task. In order to train the proposed system, we prepare

the input and output of the computational predictive model as follows: we divide the human GRCh37

reference genome into non-overlapping 200-bp bins. The target of each region is obtained by

intersecting 919 DNase-seq and Chip-seq peak set from Roadmap Epigenomics and ENCODE data

releases. Thus, the output of each input is a binary target vector with a length of 919. The input of

the system is 1000-bp sequence centered on a 200-bp. However, the input is represented as an

array with a shape (1000, 6). Each 1000-bp input sequence is one-hot encoded into a 1000 x 4

binary array where the columns correspond to A, G, C, and T. The fifth column of the input sequence

is obtained from conservation track. The last column of the input is obtained from the 35-bp

mappability uniqueness track. Finally, we add handcrafted features that are extracted from the input

DNA sequence such as the frequency of each nucleotide, 2 k-mer permutations, and 3 k-mer

permutations. Our proposed system outperforms the state-of-the-art methods such as DeepSEA and

DanQ in terms of area under curve (AUC) and the area under precision-recall curve (aucPR).

Keywords: Computational Biology, Deep Learning, DNA, Non-coding Regions

Acknowledgement (Arial 11 boldface capital)

This research was supported by the Brain Research Program of the National Research Foundation

(NRF) funded by the Korean government (MSIT) (No. NRF-2017M3C7A1044815)

-57-


Press-Forming of GFRP For Automobile Suspension Coil Spring

Jungkyu Shin1, Jaeki Kwon1

1 Principal Research Engineer, Youngheung Iron and Steel located in Bo-ryung, Republic of Korea


Abstract

The development story about Glass-fibered reinforced plastic (GFRP) replacing heavy steel of

suspension coil spring is introduced. Many trials are followed to make GFRP coil spring to meet

design specification for suspension application and test specification for practical use. Because

basic studies were not performed, many trail-and-errors are necessarily not avoidable during the

development. To improve the section quality of coil spring, press-forming is applied during thermal-

setting and therefore, the compression test can be satisfied. The results including section studies

are shown in detail.

Keywords: Glass Fiber Reinforced Plastic; Braiding; Suspension Coil Spring; Compression Test;

Press-forming

-58-


Simulation Analysis of Flexible Track Drilling Machine Based on ADAMS

Zhonggang Zhu1, Qi Zhang1,#, Jianhua Lv1

1 R&D Dept., Zhejiang Shuanghuan Driveline Co., LTD., Zhejiang, China, 317-600


Abstract

Flexible track drilling machine is credited with important application in the area of aircraft

manufacturing with the advantages of portable, quick installation and high efficiency. But the

structure is special, the constitution principle and the motion characteristic are difficult to control,

making the cost of development high and research cycle long in the context of technology

blockade of foreign companies. By the application of Virtual Prototype Technology, simulation

analysis of flexible track drilling machine can be carried out, shortening the development cycle and

reducing the cost. In this paper, the model of the machine was established by using the software of

SolidWorks and imported into ADAMS to do kinematic and dynamic simulation analysis. During the

analysis, the feasibility of the configuration was checked, the reasonable driving motion was

chosen, the potential deficiencies were found and improvement actions were raised.

Keywords: Flexible Drilling Machine; Virtual Prototype; ADAMS; Simulation Analysis

Acknowledgement

This study was supported by R&D Dept. of Zhejiang Shuanghuan Driveline Co., LTD.

-59-

Proceedings of the 5thInternationalConference on Manufacturing Process Technology 2019 Yanbian University in China,August 21 ~ 24, 2019

Study on Three-dimensional Printing of Porous 316L Stainless Steel by

3DP Method with Water-based Binder

Jianming Yang1#, Yang Tang1, Dazhi Huang1 and Yunfei Ding1

1School of Mechanical and Ocean Engineering, Jiangsu Ocean University, No.59 Cangwu Road

Haizhou District , Lianyungang, Jiangsu, 222005, China


Abstract

The green bodies were fabricated by 3DP method of 3D printing technology, in which two sticky

powders of Polyvinyl Alcohol (PVA) and starch were mixed with 316L stainless steel powder, and a

water-based solution was jetted to the mixed powder. After being debonded and sintered in the

vacuum, the printed parts of porous stainless steel were obtained. The effects of PVA content in the

mixed powder and sintering temperature on dimensional shrinkage, porosity, mechanical properties,

tensile fracture morphology and carbon content of the printed parts were studied in this paper. The

results show that with increasing of PVA content, the shrinkage, porosity and carbon content of the

printed parts increase, while mechanical properties don’t simply increase or decrease. On the other

hand, with increasing of sintering temperature, the shrinkage and mechanical properties increase,

porosity and carbon content decrease, and it appears on the morphology of tensile fracture that the

metallurgical bonding of powder particles get more compact. At last the properties of the printed

parts are compared with that of bulk stainless steel of 022Cr17Ni12Mo2 (316L) and the

corresponding value required for medical implant materials.

Keywords: Three-dimensional Printing; 3DP Method; Porous Metal; Water-based Binder;

Mechanical Property.

Acknowledgement

The research described in this publication was made possible by financial support of the open

Foundation of Jiangsu Key Laboratory of 3D Printing Equipment and Application Technology,

Nantong Institute of Technology (No.2017KFKT01), Natural Science Foundation of Lianyungang (No.

CG1515).

-60-


Microstructure and Properties of Ni/Al2O3 Composites Prepared by

Powder Injection Molding

Feng Shang1,2#, Zhenwei Cao3, Peng Zhang1, Bin Qiao1 and Huaqiang Li1

1 School of Mechanical Engineering, Huaihai Institute of Technology, No.59 Cangwu Road


2 Marine Resources Development Institute of Jiangsu, No.108 Tongguan South Road Haizhou

District, Lianyungang, Jiangsu, 222001, China

3 School of Mechanical and Electrical Engineering, China University of Mining and Technology,

No.1 Daxue Road, Xuzhou, Jiangsu, 221116, China


Abstract

Ni/Al2O3 composite was prepared by powder injection molding, the effects of Ni content and different

sintering process on the microstructure and mechanical properties of Ni/ Al2O3 composites were

studied .The results show that when the Ni content is 10%, the comprehensive performance of Ni/

Al2O3 composite is better. The optimum vacuum sintering process of 10%Ni/ Al2O3 composite is as

follows: sintering temperature of 1500 ℃ for 1 hour, with the relative density of 96.7%, bending

strength of 312 MPa, Vickers hardness of 1528HV and fracture toughness of 5.3 MPa•m1/2.

Keywords: Sintering Process; Powder Injection Molding; Ni/Al2O3 Composite; Microstructure;

Property.

Acknowledgement


Foundation of Jiangsu Key Laboratory of Large Engineering Equipment Detection and

Control(No.JSKLEDC201506) , Natural Science Foundation of Lianyungang (No. CG1514).

-61-


Boundary Lubrication in Transient Elliptical Contact

Dichu Xu1,2, Qi Zhang 3,# and Jiugen Wang2

1 Institute of Functional Surfaces, School of Mechanical Engineering, University of Leeds, Leeds,

UK, LS2 9JT

2 College of Mechanical Engineering, Zhejiang University, Hangzhou, Zheijiang, China, 310027

3 R&D Dept., Zhejiang Shuanghuan Driveline Co., LTD., Zhejiang, China, 317-600


Abstract

One of the main aims in engine oil development is to reduce frictional losses in tribological contacts.

Nowadays, oils with low viscosity are widely used. However, this will result in tribological systems

being run under boundary lubrication. In this work, a deterministic model consisting of the elasto-

plastic contact model and a pure squeeze lubrication model is developed under the transient

boundary lubrication regime. By implementing the proposed numerical procedure, the simultaneous

solution is feasible for any pre-set time steps. Additionally, the effects of fluid film entrapment and

leakage were numerically analyzed, and then a better understanding of the squeeze film lubrication

mechanism in the transient boundary lubricated contacts was obtained. Lastly, the simulation results

were in a good agreement with the previous experimental research, which justifies the present model

is feasible in the transient boundary lubrication regime.

Keywords: Boundary lubrication; Squeeze film effect; Junction growth; Leakage; Boundary friction

Acknowledgement

Authors may express their gratitude in support by National Natural Science Foundation of China

(Grant No. 51375436).

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A Study on the Friction and Wear Properties of 45 Steel、TiN and TiAlN

Yuanming LI 1, Huibo He1,# and Huaying Li1,2

1 College of Engineering and Technology, Southwest University, Chongqing 400715, China

1,2 School of Mechanical & Aerospace Engineering, ReCAPT(K-MEM R&D Cluster), Gyeongsang

National University, Jinju, South Korea, 660-701


Abstract

TiN coatings and TiAlN coatings were deposited on steel 45 substrates by Physical Vapor

Deposition (PVD). Friction and wear tests were performed to evaluate performances of 45 steel,

TiN and TiAlN coatings using three kinds of loads and five kinds of loads, respectively. Wear loss

of steel 45, TiN coatings and TiAlN coatings had been assessed by means of surface profile

detector. The critical loads of TiN coatings and TiAlN coatings were tested by scratch-adhesion

tests. Results of the investigation show that the friction coefficients of TiN coatings and TiAlN

coatings have larger decreased trends with the increase of load. TiAlN and TiN have the functions

of decreasing friction coefficient. And the effect of TiN is better than that of TiAlN. Wear loss of

steel 45, TiN and TiAlN increases with increasing loads. TiN coatings and TiAlN coatings have the

remarkable wear resistance abilities than that of steel 45. And TiAlN coatings have higher wear

resistance performances that TiN coatings. The specific wear rate of steel 45 presents a trend of

linear change. TiAlN coatings and TiN coatings approximate nonlinear change. The critical load of

TiN coatings is higher than that of TiAlN coatings.

Keywords: Friction Coefficient; Specific Wear Rate; Critical Load; Wear Loss

Acknowledgement

This work was supported by the Fundamental Research Funds for the Central Universities of

Ministry of Education of the People’s Republic of China XDJK2013D015, XDJK2012C002.The

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authors would like to acknowledge the Korea Industrial Technology Foundation at Gyeongsang

National University, S.Korea.

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Study on Cutting Force and Cutting Temperature in Dry Cutting of 20Cr

Steel

YUE Qi-bin1, HE Hui-bo1,#, LI Hua-ying1,2, ZHANG Xian-yin1, Jiang Xue1

1 College of Engineering and Technology, Southwest University, Chongqing 400715, China

2 School of Mechanical & Aerospace Engineering, ReCAPT(K-MEM R&D Cluster), Gyeongsang

National. University, Jinju, South Korea, 660-701


Abstract

A study on the dry turning process of 20Cr steel on the CA6140A lathe was carried out using the

cemented carbide tools of three different materials and changing three cutting parameters. The

influences of the three cutting parameters on the cutting force and cutting temperature were

investigated and the cutting test results of the three different cutting tools were obtained. Then the

three-dimensional finite element simulation software---Deform 3D was used to simulate the dry

turning process of 20Cr steel, and the simulation results of cutting force were compared with the test

results. The analysis result demonstrated that the cutting depth had the greatest influence on the

cutting force of 20Cr steel, followed by feeding rate and cutting speed, and the cutting speed has the

greatest influence on the cutting temperature, followed by the feeding rate and the cutting depth.

The TiN coating can effectively reduce the cutting force and cutting temperature. The error between

the simulation result of the cutting force and the test result is within the acceptable range (2.1% ~

11.8%). It is proved that the finite element simulation software is feasible to predict the cutting force

of the 20Cr steel.

Keywords: 20Cr Steel; Cutting Force; Cutting Temperature; Cutting Parameter

Acknowledgement

This work was supported by the Fundamental Research Funds for the Central Universities of Ministry

of Education of the People’s Republic of China XDJK2017C081.The authors would like to

acknowledge the Korea Industrial Technology Foundation at Gyeongsang National University,

S.Korea.

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Research Status of Low Pressure Casting Aluminum Alloy Wheels

Lichao Feng1,#




Abstract

steel wheels due to their light weight, high thermal conductivity, good formability and beautiful

appearance. Low-pressure casting is the main production method of aluminum alloy wheels today.

This paper briefly introduces the low-pressure casting aluminum alloy wheels. The basic overview

and preparation principle, the research progress of forming process, casting equipment automation

and mold optimization, wheel aluminum alloy chemical composition and heat treatment process

are introduced, and the development trend of aluminum alloy automobile wheel hub production

technology is prospected.

Keywords: Aluminum Alloy Hub; Low Pressure Casting; Preparation Principle; Forming Process

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Proceedings of the 5thInternationalConference on Manufacturing Process Technology 2019

Yanbian University in China,August 21 ~ 24, 2019

Effects of Matrix Components on Microstructure and Properties of

SiCP/Al-Fe-V-Si Composites

HE Yi-qiang1,2, QIAN Chen-chen1,2, XU Hu-lin1,2, CHEN Jin-song1,2, LI Hua-qiang1,2, FENG Li-

chao1,

1 School of Mechanical Engineering, Jiangsu Ocean University, No.59 Cangwu Road Haizhou

District , Lianyungang, Jiangsu, 222005, China




Abstract

Spray deposited SiCP/Al-Fe-V-Si composites were densified by twice hot pressing and subsequently

multi-pass hot rolling. Scanning electron microscope, transmission electron microscope and tensile

test were used, and effects of matrix alloy components and Fe/V ratio on microstructures,

mechanical properties and hot resistance of the composite were analyzed. The results show that:

The composites as-rolled are characterized with high volume fraction Al12(Fe,V)3Si dispersoids, and

volume fraction of the dispersoids increases with Fe content increasing. Volume fraction of

Al12(Fe,V)3Si dispersoids are up to 40% when Fe content of the matrix alloy is 11.5%(in mass

fraction). Al12(Fe,V)3Si dispersoids of 50~80nm in diameter distribute along the grain boundaries,

and exhibit excellent thermalstability. However, the Fe atoms diffuse in the form of bulk diffusion,

and accordingly the dispersoids both along the grain boundaries and in the grains coarsen at a

relative high velocity. Coarsening velocity of Al12(Fe,V)3Si dispersoids falls with rise of Fe/V ratio.

Strength of the composite increases with Al12(Fe,V)3Si dispersoid volume fraction increasing, and

decreases with tensile temperature being elevated. And elongation of the composite decreases both

with rise of Al12(Fe,V)3Si dispersoid volume fraction and tensile temperature.

Keywords: Al-matrix composite; Spray deposition; Matrix Component; Particle Reinforcement;

Microstructure;.Acknowledgement

The research described in this publication was made possible by financial support of Natural Science

Foundation of Jiangsu(BK20141250);Natural Science Foundation of HHIT(Z2017001); Lianyungang

521 Project(zkk201805); Jiangsu Liuda Human Resource(No. JXQC-058), Jiangsu Qinglan Project.

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Research on Preparation of Copper Based Superhydrophobic Surfaceby

Jet Electrodeposition

HUANG Dazhi1,2, TIAN Zongjun1, LIU Zhidong1, SHEN Lida1, QIU Mingbo1,

CHEN Jinsong2, MA Shiwei2

1College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and

Astronautic, Nanjing 210016,China

2 Jiangsu Province R&DInstitute ofMarine Resources, Huaihai Institute of Technology,

Lianyungang 222005, China


Abstract

Superhydrophobic materials have broad application prospects in oil-water separation, non-

destructive transportation and corrosion resistance. Jet electrodeposition technology has many

advantages such as easy control, high efficiency, low cost and selectivity, which shows strong

advantages in the preparation of superhydrophobic surface. The hydrophobicity of surface

prepared by controlling jet electrodeposition current density, scanning speed and scanning layers

was analyzed. The results show that the superhydrophobic surface with the contact angle higher

than 150° can be prepared by current density of 875 A/dm2, scanning speed of 12 mm/min and

two times scanning. Finally, the surface microstructure closes to the situation of natural lotus leaf.

Keywords: Jet Electrodeposition; Superhydrophobic; Copper; Current Density.

Acknowledgement

The research described in this publication was made possible by financial support of Project

(51475235,51675272) supported by National Natural Science Foundation of China, Project

supported by Jiangsu Key Laboratory of Precision and Micro-manufacturing Technology of China，

Project (JSKLEDC201309) supported by Jiangsu Key Laboratory of Large Engineering Equipment

Detection and Control of China.

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Performance of Ion Plating TiAlN Coating on YG8

HuiXia Zhang#

School of Mechanical Engineering, Huaihai Institute of Technology, No.59 Cangwu Road Haizhou



Abstract

Multi-arc ion plating technology and interactive deposition process are adopted to plate TiAlN hard

film on the surface of YG8 cemented carbide cutting tools. Study the influences of the coating film

parameters to surface appearance with orthogonal experiment method. Observe substrate

samples, TiN transition layer and TiAlN coating film under the scanning electron microscope

(SEM). Cutting test, friction and wearing test showed that the coated cutting tools are with more

wearing resistance. The main wear mechanisms are adhesion, some accompanied by flake layer

of disbonding. Coated cutting tools significantly reduces friction coefficient. By experimental design,

the best process parameters are deposition temperature 100 ℃, substrate negative bias voltage

250 V, nitrogen partial pressure 0.6 Pa.

Keywords: Friction and Wear Behavior；Technological Properties；TiAlN

Acknowledgement

This work was a project funded by the Natural Foundation of Huaihai Institute of

Technology(Z2014002), China.And many thanks for Basic Science Research Program through the

National Research Foundation of Korea (NRF)

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Study on Three-dimensional Printing of Porous 316L Stainless Steel by

3DP Method with Water-based Binder

Jianming Yang1#, Yang Tang1, Dazhi Huang1 and Yunfei Ding1

1School of Mechanical and Ocean Engineering, Jiangsu Ocean University, No.59 Cangwu Road



Abstract

The green bodies were fabricated by 3DP method of 3D printing technology, in which two sticky

powders of Polyvinyl Alcohol (PVA) and starch were mixed with 316L stainless steel powder, and a

water-based solution was jetted to the mixed powder. After being debonded and sintered in the

vacuum, the printed parts of porous stainless steel were obtained. The effects of PVA content in

the mixed powder and sintering temperature on dimensional shrinkage, porosity, mechanical

properties, tensile fracture morphology and carbon content of the printed parts were studied in this

paper. The results show that with increasing of PVA content, the shrinkage, porosity and carbon

content of the printed parts increase, while mechanical properties don’t simply increase or

decrease. On the other hand, with increasing of sintering temperature, the shrinkage and

mechanical properties increase, porosity and carbon content decrease, and it appears on the

morphology of tensile fracture that the metallurgical bonding of powder particles get more

compact. At last the properties of the printed parts are compared with that of bulk stainless steel of

022Cr17Ni12Mo2 (316L) and the corresponding value required for medical implant materials.

Keywords: Three-dimensional Printing; 3DP Method; Porous Metal; Water-based Binder;

Mechanical Property.

Acknowledgement


Foundation of Jiangsu Key Laboratory of 3D Printing Equipment and Application Technology,

Nantong Institute of Technology (No.2017KFKT01), Natural Science Foundation of Lianyungang

(No. CG1515).

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Based on Interest Region Detection of Roadway Environment

Perception System by Autonomous Mobile Robot

Mingqin Liu1,#, Xiaoguang Zhang2





# Corresponding Author / E-mail: [email protected], TEL: +86-18961310975

Abstract

In this paper, an improved Harris corner point detector is proposed on the basis of the

comprehensive evaluation of existing interest point detectors. The method calculates Harris

interest points in multi-scale space and selects only the corner points with local maxima on each

scale. Through the characterization and affine transformation estimation of the pixels around the

corner point, the detected interest points have the characteristics of scale, rotation, translation and

affine invariant. In view of good stability features during the moving of mobile robot, proposed a

method based on natural scene recognition of significantly local image regions, the robot analysis

the image which it obtained, and looking for the most matching image in the library, that is object

recognition, it can effective keep repeating detection and the scene regions recognition under the

condition of distance scale change、motion rotation and angle change. The method is applied to

binocular vision autonomous mobile robot to detect the roadway environment. It can effectively

avoid obstacles and walls, and can identify the categories of obstacles.

Keywords: Autonomous Mobile Robot; Environment Perception; Interest Region Detection;

Binocular Vision

Acknowledgement

The research described in this publication was made possible by financial support of Ministry of

Education Production and Teaching Integration Project (No.201702061028), Jiangsu Province

Industry-University-Research Cooperation Project (No. BY2018223).

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Caterpillar Robot Mechanical Structure Design

Long Lu1,#, Xiaoguang Zhang2






Abstract

In this paper, First studied the structure of caterpillar robot both here and abroad, summarized the

advantages and disadvantages of robot structures, and then a new structure is proposed. The

Caterpillar robot design principle use the bionic principle to realize more of the robot joints, more

freedom, which mainly includes the son of joint movement way design and the son of the joint

length optimization design, parts stress intensity , finally realize the robot's multiple class type, flex ,

modular, movement flexibility .The mechanical structural design of the robot of caterpillar type

mainly use theoretical analysis and calculation basic size of the son parts, through three-

dimensional CAD software Pro/E it was parameterized modeling entity, realizing the whole parts

assembled. The parts of the robot of stress check mainly use the material mechanics calculation

and ANSYS software. Through physical experiments show that the design of the robot can

successfully achieve the desired functionality, the mechanical structure meets the design

requirements.

Keywords: Caterpillar Robot; Mechanical Structure; Multiple Freedom; Optimal Design; Multiple

joints

Acknowledgement




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Supplier Selection in Supplier Chain Management using Choquet

Integral-based Linguistic Operators under Fuzzy Heterogeneous

Environment

Xiqin Wen1#

1School of Mechanical Engineering, Huaihai Institute of Technology, No.59 Cangwu Road Haizhou


# Corresponding Author / E-mail:[email protected], TEL: +86-518-85895321, FAX: +86-518-85895321

Abstract

The fifierce competition and the globalization of the market economy urge manufacturing

organizations to adopt advanced manufacturing paradigms for sustaining in the global markets.

Supply chain management is an essential ingredient of advanced manufacturing systems and

fifinding those partners with the best fifit to the existing supply chain is a vital issue concerned in

the process of managing supply chains. Due to the decision maker’s knowledge fifield and the

nature of evaluated attributes, assessments are always with different formats, which were fifirst

unifified into the linguistic terms in the standard linguistic set. Two additive fuzzy measures were

used to model criteria interactions by pairs and to derive the special expressions of Marichal

entropy and Choquet integral, which is more convenient to use in practice. Fuzzy measures were

identifified based on the maximum of Marichal entropy.

Keywords: Supply chain management (SCM) ;Supplier selection; Fuzzy Two-additive fuzzy

measure;Two-tuple linguistic representation; Choquet integral-based linguistic operators

Acknowledgement

This work was partially funded by the Six Talent Peaks Project in Jiangsu Province

(No. 2011-ZBZZ-046).

-73-



Tracking Control for Wheeled Mobile Robots Using Neural Network

Model Algorithm Control

Yuan Liang Zhang1#




Abstract

This paper proposed a neural network model algorithm control (NNMAC) method for the path

tracking control of differentially steered wheeled mobile robots (WMRs) subject to nonholonomic

constraints. The model algorithm control (MAC) is a one-step-ahead predictive controller, in which

the control law is obtained by minimizing the output error. The MAC method needs the well known

model of the controlled system to design the controller. But sometimes it is difficult to get the

accurate model of the controlled system or the model of the controlled system is not good because

of the inside and outside disturbances and unknown parameters. Neural network has the ability to

estimate the nonlinear system’s model and its corresponding inverse model. In this paper the

NNMAC method which combines two neural networks and MAC method is proposed to do the path

tracking control of a wheeled mobile robot. Some simulations are conducted to show the

performance and feasibility of the proposed control strategy. In these simulations the WMR is

controlled to track two difference reference paths such as the circular shape path and the “8”

shape path.

Keywords: Neural Network, Model Algorithm Control, Mobile Robot

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Based on Fractal and Wavelet Technology Defect Edge Detection of

Weld X Ray Image

Anhua Peng1,#, Xiaoguang Zhang2






Abstract

Fractal dimension can be used to measure, analyze and evaluate the texture and shape .Based on

the theory of fractal dimension and fractal characteristics, combined with the wavelet transform

modulus maximum to extract weld edge and weld defects in radiation image. Satisfactory

experimental results have been obtained. The specific detection steps are given in this paper.

Experimental results show that the detection of weld containing incomplete welding defects were

obtained satisfactory results; Then using this method to detect weld defects (including other cracks,

porosity and inclusion defects), experimental verification, the defect edge continuity and uniformity

are good, can be used for the next segment.

Keywords: Edge Detection; Weld Defects; Fractal; Wavelet Transform Modulus Maximum

Acknowledgement




-75-



Microstructure and Properties of Ni/Al2O3 Composites Prepared by

Powder Injection Molding

Feng Shang1,2#, Zhenwei Cao3, Peng Zhang1, Bin Qiao1 and Huaqiang Li1








Abstract

Ni/Al2O3 composite was prepared by powder injection molding, the effects of Ni content and different

sintering process on the microstructure and mechanical properties of Ni/ Al2O3 composites were

studied .The results show that when the Ni content is 10%, the comprehensive performance of Ni/

Al2O3 composite is better. The optimum vacuum sintering process of 10%Ni/ Al2O3 composite is as

follows: sintering temperature of 1500 ℃ for 1 hour, with the relative density of 96.7%, bending

strength of 312 MPa, Vickers hardness of 1528HV and fracture toughness of 5.3 MPa•m1/2.

Keywords: Sintering Process; Powder Injection Molding; Ni/Al2O3 Composite; Microstructure;

Property.

Acknowledgement


Foundation of Jiangsu Key Laboratory of Large Engineering Equipment Detection and

Control(No.JSKLEDC201506) , Natural Science Foundation of Lianyungang (No. CG1514).

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Research Progress in the Bi-direction Non-contact Mechanical Seal

Technology

TU Qiaoan1,ZHOU Fei2

1College of Mechanical and Electronical Engineering，Nanjing Forestry University，Nanjing，

Jiangsu 210037，China

2 Academy of Frontier Science Nanjing University of Aeronautics and Astronautics, Nanjing，

Jiangsu 210016，China

# Corresponding Author / E-mail: [email protected],

Abstract

In some high parameter condition,the traditional contact mechanical seal worn badly,life is short, can

not take long period run of the equipment requirements.Carry out non-contact mechanical seal

especially bi-directional rotary non-contact mechanical seal research in favor of solving the

problem.This paper summarizes of several typical bi-directional rotary non-contact seal reviews

domestic and overseas.Using comparative analysis method ,comparing related groove profile

characteristics of each groove,this paper gives that different operating conditions of the bi-directional

rotary non-contact seal choosing principle : High pressure and high temperature, large size

occasions appropriate chooses circular groove;Low speed occasions appropriate chooses tree

groove;Grinding particles of tiny occasions appropriate chooses multi-pore face; High temperature

occasion all can choose T-shape groove.Points out that consummating theory model and

strengthening the backflow effect, improving the open stability and enhancing T groove steady-state

operation temperature range are the development direction of bi-directional rotary non-contact seal

technology .

Keywords: Mechanical Seal；T-shape Groove；Circular Groove；Multi-pore Face；Sealing

Property

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Design of Roll Forming parts to support PV modules in Building

Roof

Sun-Ho Kim1,# and Sung-Uk Zhang1

1 Dong-Eui University, Busan, 37340, South Korea


Abstract

Several types of structural steel are used to support the weight of the building exterior material facade

from the roof. We are interested in buildings that use PV modules as exterior materials. Aluminum

extrusion products have been used as support for PV modules. Aluminum products are light and

have good environmental resistance against corrosion. However, this has some disadvantages. The

first is that the price of the material is very expensive, and the second is that aluminum extruded

products have a limited length of products to be produced. However, the size of buildings such as

factories and warehouses is on the rise. The length may reach 40m. In that case, aluminum extruded

products having a limited length may be structurally unstable, requiring bonding as a bolt. In order

to solve this problem, we tried to apply roll forming method using iron sheet. For this purpose, we

tried to find the optimal shape and thickness of sheet based on the previous product. By comparing

and analyzing several alternatives through CAE analysis, we derived parts with the same rigidity as

existing products.

Designed part CAE analysis

Keywords: Roll Forming Parts, PV Modules, Building Roof, CAE Analysis

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Simulation Analysis and Experimental Research on T Grooved End Face

Seal Under mid-and-low Speed

Huixia Zhang1,2, Long Lu1 and Sungki Lyu3,#

1 College of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu,

China 222-005

2 State Key Laboratory of Mechanics and control of Mechanical Structures ,Nanjing university of

Aeronautics and Astronautics Nanjing, 210016

3 School of Mechanical & Aerospace Eng., ReCAPT(K-MEM R&D Cluster), Gyeongsang Nati.

Univ. Jinju, Korea 660-701

# Corresponding Author / E-mail: [email protected], TEL: +82- 55-772-1632, FAX: +82- 55-772-1578

Abstract

Whether the dry gas seal in the low speed and large diameter of axle equipment can establish a stable gas

film is essential to the stability of equipment operation. This is an inevitable requirement to maintain non-

contact operation of dry gas seal in service. Choosing T Grooved dry gas seal which can realize bi-direction

rotating and on the basis of optimized trough by Fluent software for simulation analysis. Obtain the influence

rule of geometric parameters and operating parameters on the properties of T shaped groove dry gas seal

under the low speed(<6000 r/min). At the same time, the law is verified through the experiment. The results

show that the operating parameters, such as speed and pressure have obvious effects on the properties of

sealing. Geometric parameters, like the groove depth and groove number have obvious effects on the sealing

performance. Finally, the general principles in choosing working parameters and geometric parameters of T

Grooved dry gas seal under low-speed were obtained: Groove number should be between 12~16, groove

depth should be between 4~6μm, sealing clearance between 2~4μm. The research is instructive to provide

theoretical support for engineering design and industrial application of T Grooved dry gas seal under mid-and

low speed.

Keywords: Non-contact Mechanical Seal；Liquid Film；Gas Film；Dry Gas Seal ；Upstream

Pumping

Acknowledgement

This work was a project funded by the Natural Science Foundation in Jiangsu Province Colleges and

Universities of China (15KJB460002); and the Innovation Foundation of Huaihai Institute of

Technology of China (Z2014010 & Z2014002); and the Scientific Research Foundation of Huaihai

Institute of Technology of China(KQ16006).

-79-


Proceedings of the 5thInternationalConference on Manufacturing Process Technology 2019 Yanbian University in China, August 21 ~ 24, 2019

-80 -

Structural Design of a New Type of Straw Returning Plowing and

Rotary Tilting Duplex Working Machine

Shufa Chen1, Fawang Xie1, Xianqing Meng2

1 School of Mechanical and Ocean Engineering, JIANGSU OCEAN UNIVERSITY, No.59 Cangwu

Road Haizhou District, Lianyungang, Jiangsu, 222005, China

2 Ganyu Agricultural Mechanization Technology Extension Service Station, No.67 Huazhong

South Road, GanyuQu, Lianyungang, Jiangsu, 222100, China


Abstract

In order to solve the problem that the current operation efficiency of rice straw and straw returning

farmwork equipment is not satisfactory, the shallow depth of straw burying and the ability of

preserving water and storing water are poor, it is required that we combine the straw plow turning

and tilling technologies with the requirements of conservation tillage, Play plow turn plowing and

other advantages of a variety of farming methods of deep plowing and tillage machine, a one-time

completion of plowing, rotary tillage, deep pine and many other operations. This article focuses on

the structure of the machine and its working principle, to determine the structure of the key

components of the machine form and the main parameters. The test results show that the machine

has stable performance at work, good effect of straw mulching and crushing, high operation

efficiency and versatility, and can meet the requirements of multi-operation of rice straw and wheat

straw returning to the field under various conditions.

Keywords: Plowing; Rotary Tilting; Deep Pine; Structural Design

Acknowledgement


Jiangsu Province Science and Technology Enterprise Technology Innovation Fund Project (No.

BC2015167) , Jiangsu Provincial Policy Guidance Program-Subei Science and Technology

Special Project（No. BN2016051）,Lianyungang Joint Research Project of Industry, Education

and Research (No. CXY1501).

th international conference on manufacturing process...

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