material selection and process - · pdf fileproduct design 3/24/2011 hadisaputra@live.com....
Post on 11-Feb-2018
229 Views
Preview:
TRANSCRIPT
2nd appointment
Material Selection
and
Process
3/24/2011 hadisaputra@live.com
Materi 1
• Konsep Design
• Case study proses design
• Evolusi material Teknik
• Klasifikasi Material Teknik
• Sifat-sifat Material Teknik
• Komposisi Paduan
• Case study Pemilihan Material untuk kaki meja
3/24/2011 hadisaputra@live.com
Product Design
3/24/2011 hadisaputra@live.com
Material Selection and Process –Ashby-IstDesign flow Chart
3/24/2011 hadisaputra@live.com
3/24/2011 hadisaputra@live.com
Case Study Design Product: Vacuum Cleaner
• 1. Need devices to remove dust from carpets in Home
• 2.Concepts• A Vacuum
• Air Compressor
• Adhesive Belt
• Brush It Out
• Draw it Out Electrostatically
Choose a Vacuum Methods
Specification :- Power source is electrical- Vacuum Pump- A Filter to Catch the dust- A pipe to direct action of pump to the carpets
3/24/2011 hadisaputra@live.com
• 3. Embodiment
• More Detail Calculation of :
• Law Rates
• Pump Design
• Form of Filter
• Diameter Length of Tube
• The Casing
• The Control
• How to Integrating All
- A Layout diagram- Estimate Power- Weight & performance
3/24/2011 hadisaputra@live.com
• 4. Detail Design• Pemilihan Material tiap komponen
• Pemilihan standart part untuk tiap komponen.
• Komponen yang bukan standart part perlu analysis lebih lanjut , misal : Finite Element Analysis, Air Flow, dll
• Production Methods– Predefine prosess tiap komponen
– Predefine alternatif cost tiap komponen
• Shape, Texture, and Color of external surface by other Engineer
Complate a set of Engineering Drawing and Production specifications
3/24/2011 hadisaputra@live.com
3/24/2011 hadisaputra@live.com
Klasifikasi Material Teknik
• Metals– Steels, Cast irons, Al Alloys , Cu-Alloys,
Zn-Alloys, Ti-Alloys
• Polymer– PE, PEEK, PP, PET, PC, PS, PA (Nylons),
Polyesters, Phenolics , Epoxies
• Glasses– Soda Glass, borosilicate glass, silica
glass, glass-cermics
• Elastomers– Isoprene, Neoprene, butyl rubber,
natural rubber, Silicon
• Composites– Composite, Shandwich, Segmented
structures, Lattices, weaves
3/24/2011 hadisaputra@live.com
Klasifikasi Ferrous metal
3/24/2011 hadisaputra@live.com
Sifat-sifat Material Teknik
Properties of
Materilas
Physical Properties
Density, melting point, optical, thermal,
coefisient of conductivity, magnetic properties
Mechanical Properties
Statics properties
Dynamic properties properties
Temperature Effercts
Machinability, Formability, Weldability
Fracture Toughness and The fructure Mechanics
approch3/24/2011 hadisaputra@live.com
Sifat-sifat Bahan Teknik
• Static Properties– Tensile Test– Ductility and Britellness– Toughness berkaitan dengan
impact or shock loading– Damping Capacity kapasitas
absorbed vibration eg cranksahft– Compression testing– Hardness testing, eq. Brinell,
Rockwell, Vickers
• Dynamic properties– Impact Test– Fatigue and Endurance
Limit
• Temperature effect– Contohnya pada konstruksi pesawat,
space vehicles, gas turbin, and nuklearpower plant, are required operated under temp. as low as -130 C or as high as 1250 C
– Elevated Temp. usefull in modify the strength and ductility of materials. Fig. 2-29 • Machineability, Formability, and
weldability
• Fracture toughness and Fracture mechanics approach
Atomic Bonds
Secondary Bonds
van derWaals Forces
Primary Bonds
Ionic Bonds
Covalent Bonds
MetalicBonds
Ikatan Atom
3/24/2011 hadisaputra@live.com
Crystal Structures of Metals
Structures unit cell :
• BCC
• FCC
• HCP
• Crystal system :• Cubic
• Hexagonal
• Tetragonal
• Rhombo
• Ortho
• Monoclinic
• Triclinic
3/24/2011 hadisaputra@live.com
Unsur-Unsur Paduan Bahan teknik
Alloys
CompositeTwo Type of building
Blocks in intimate mechanical mixture
The two elements exhibet some
degree of solubility in the solid state
Substitusional
Interstistials
Elements combine to form
intermetalliccompounds
Ionic dancovalent
3/24/2011 hadisaputra@live.com
Center Problem in Material selection
3/24/2011 hadisaputra@live.com
3/24/2011 hadisaputra@live.com
3/24/2011 hadisaputra@live.com
Strategy To Choose Material
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Material Chart
3/24/2011 hadisaputra@live.com
Case Study : Material Selection for Table Leg (ashby , page 71)
3/24/2011 hadisaputra@live.com
Case Study : Material Selection for Table Leg (ashby , page 71)
3/24/2011 hadisaputra@live.com
Case Study : Material Selection for Table Leg (ashby , page 71)
3/24/2011 hadisaputra@live.com
Case Study : Material Selection for Table Leg (ashby , page 71)
3/24/2011 hadisaputra@live.com
Case Study : Material Selection for Table Leg (ashby , page 71)
3/24/2011 hadisaputra@live.com
Case Study : Material Selection for Table Leg (ashby , page 71)
3/24/2011 hadisaputra@live.com
Tugas ?•Mahasiswa Mencari
–1. Klasifikasi Baja?
–2. Kodefikasi Baja?
–3. Unsur-unsur paduan baja?
3/24/2011 hadisaputra@live.com
References
• Materials and Processes in Manufacturing, E. Paul Degarmo
• Materials Selection in Mechanical Design, Ashby
3/24/2011 hadisaputra@live.com
top related