researcher presentations - university of bristol · 2020. 7. 17. · pg researcher presentations...

www.bris.ac.uk/composites

Quickfire Session

Thursday 10th September 2015

Chaired by:

Dr Galal MohamedACCIS Conference 2015

Researcher Presentations

PG Researcher Presentations

Nazli G. Ozdemir, PI: Prof. Fabrizio Scarpa

Morphing Nacelle with a Flexible Nano-Composite Sandwich Panel

Olivia Stodieck, PI: Prof. Jonathan Cooper, Prof. Paul Weaver

Aeroelastic Tailoring of Tow-Steered Composite Wings

Jack F. Cullinan, PI: Prof. Ian Bond. Prof. Michael Wisnom

Vascular Self-Healing of Composite Structures

Camilla Osmiani, PI: Prof. Ivana Partridge, Dr Galal Mohamed, Dr Giuliano Allegri

Multi-Scale Characterisation of Tufted Composite Structures

Chenchen Zhu, PI: Dr. Sameer S. Rahatekar

Manufacturing of High Performance Cellulose Fibre

Laura Pickard (NCC) Prof. Ivana Partridge, Prof. Kevin Potter

Knowledge Management in Composite Manufacture


Jack F. Cullinan

[email protected]

PhD Candidate / Marie Curie Research Fellow

Advanced Composites Centre for Innovation & Science (ACCIS)

University of Bristol, United Kingdom

Supervised by:

Prof Ian Bond

Prof Michael Wisnom

ACCIS Conference 2015

Vascular Self-Healing of Composite Structures

Introduction - Targeted Self-healing

[www.volvooceanrace.com]

[www.nts.com]

[S Hallett et al., UoB]

[www.asdwire.com]

[R Luterbacher et al., UoB]

[www.compositesworld.com]

Ply Drops

T-Joints

Open Holes

Scantlings

Jack [email protected]

Targeted Vascular Self-healing

[www.volvooceanrace.com]

[www.nts.com]

Analysis & Optimisation

Repair & Recovery


Supported by:

Acknowledgements:

Prof Ian Bond

Prof Michael Wisnom

Prof Veronique Michaud (EPFL)

Mr Rafael Luterbacher

www.ACCISMultifunctional.comContact:

[email protected]


Thank you for your attention!


ACCIS Poster



Camilla Osmiani

[email protected]

PhD Candidate



Supervised by:

Prof. Ivana Partridge

Dr Galal Mohamed, Dr Giuliano Allegri

Multi-Scale Characterisation and Modelling of Tufted Composite Structures

FE model of thread and material

properties calibration

Multi-Scale Characterisation and Modelling of Tufted Composite Structures

Objective: Development of tools for the design of damage tolerant tuftedcomposite structures

Single-tuft Characterisation & Modelling

Analytical micro-mechanics model

Predicted bridging law

Rod in elastic foundation

Calibra

ted m

odel

Cohesive law

2k c

arb

on th

read

Mechanical testing

FE model of the unit cell of a tufted composite

Tuft

Unit-Cell FE Model

Camilla [email protected]


Supported byWe would like to acknowledge Rolls-Royce plc for the support of this research through the Composites University Technology Centre (UTC) at the University of Bristol, UK.

ACCIS Poster

Camilla [email protected]



Olivia Stodieck

[email protected]

PhD Candidate



Supervised by:

Prof. Jonathan Cooper

Prof. Paul Weaver

Aeroelastic Tailoring of Tow-Steered Composite Wings

Straight-Fibre optima

Tow-Steered optima

Gust loads 1

Gu

st

load

s 2

Tow steering reduced gust loads by ≈24%

Improve local

buckling resistance

Prevent

flutter/divergence &

reduce gust loads

Improve control

effectiveness

Tow steering increased flutter airspeed by ≈13%

Trim and gust load cases

Structural stability

Structural strength

Airspeed

Dam

pin

gFreq

uen

cy

Simple Wing Model Optimisation

How?

Current work

Olivia [email protected]

ACCIS Poster

Olivia [email protected]



Dr Nazli G. Ozdemir

[email protected]

Postdoctoral Researcher



Supervised by:

Prof. Fabrizio Scarpa

Morping Nacelle with a Flexible Nano-Composite Sandwich Panel

A novel flexible sandwich panel for morphing applications

cssss

1. Concept 2. Graphene

0

0.5

1

1.5

2

2.5

0 10 20 30

Force(kN

)

Deflec on(mm)

TPUpanel

G/TPUpanel

Sample σc (MPa)

E (N/m)

Loss factor

Electrical conductivity

(S/m)

TPU 1.71 2261 0.27 1.00 ×10-13

G/ TPU 1.88 2519 0.27 1.87 × 10-9

3. Morphing prototype demonstrator

(0.07, 0.07) to (0.07, 0.345) MPa (0.0345, 0.0345) to (0.207, 0.0345) MPa

(0.0345, 0.0345) to (0.0345, 0.207) MPa

Fig. Components of the demonstrator

Dr Nazli G. [email protected]

ACCIS Poster

Dr Nazli G. [email protected]



Chenchen Zhu

[email protected]

Research Assistant



Supervised by:

Dr. Sameer S. Rahatekar

Manufacturing of High Performance Cellulose Fibres to Replace Glass & Carbon Fibre Precursors

High Performance Cellulose Fibres

Project Vision: Develop high performance regenerated cellulose fibres to replace glass fibres and as sustainable precursors for carbon-fibre production.

Cellulosic Biomass

Cellulose Nano whiskers

Ionic Liquids

Partially Solvated Nano whiskers in ionic liquids

Liquid Crystalline cellulose solution

Fibre Spinning

Gel drawingIonic

LiquidsAligned Nano-whisker

reinforced cellulose fibre

Regenerated cellulose reinforcing fibres spunfrom liquid crystalline phase with highstiffness and strength:

Transportation & Sport Applications

Novel, environmental manufacturing

Coagulation bath

Extruder

ram

Fiber

collection

spool

Chenchen [email protected]

Continuous Single Cellulose Fibre

18% celluloseDr=5.3

Viscose (EnkaTM)

Young’s modulus (GPa) 20.38(±2.5)

9.40(±0.5)

Tensile strength (MPa) 262.7(±17.1)

220(±50)


18.79 (±0.40) μm

SEM

Wide Angle X-ray

ACCIS Poster




Laura [email protected]

Composites Manufacture (EngD) Research Engineer

National Composites Centre (NCC)


Supervised by:

Dr Dan Kells (NCC)

Prof. Ivana Partridge, Prof. Kevin Potter (UoB)

Knowledge Management in Composites Manufacture

Industrial Doctorate Centre in Composites Manufacture

Knowledge Management in Composites Manufacture

Specific questions General understanding

Top 3 choices Top 3 choices

Knowledge has legsUnderstand what we haveFind the gapsCapture/transfer useful knowledgeEnsure solution fits work practicesAcademic/industrial differences.

NCC/CIMPComp Poster

Laura Pickard (EngD)[email protected]

researcher presentations - university of bristol · 2020. 7. 17. · pg researcher presentations...

Documents