Imperial College London
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Dr Ajit Panesar

Faculty of Engineering, Department of Aeronautics

Senior Lecturer
 
 
 
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Contact

 

a.panesar Website

 
 
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Location

 

216City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Plocher:2019,
author = {Plocher, J and Lee, C and Panesar, A},
publisher = {ICCM},
title = {Additive manufacturing of bone-inspired structural-power composites},
url = {http://hdl.handle.net/10044/1/73850},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Design for additive manufacturing today – benefitting from unprecedented geometrical freedom – isincreasingly exploiting means of structural optimization, including topology optimization, latticing andby taking inspiration from nature. This paper constitutes a case study, highlighting the added value andpotential   of   combining   these   structural   design   approaches   in   AM,   particularly   in   terms   ofmultifunctionality. A method to obtain bone-inspired structural-power composites, designed for fibre-reinforced additive manufacturing, with both high stiffness-to-weight ratio and ionic conductivity ispresented. For this purpose, a sandwich structure with reinforced shell (compact bone) and lattice core(spongy  bone)  filled  with  ionic  liquid  (bone  marrow)  is  proposed.  A  finite  element  analysis  andcalculations based on a resistance network model provided insight into the change and trade-off betweenmechanical  and  electrical  performance  with  increasing  shell  thickness  i.e.  level  of  reinforcement.Investigations into fibre angle assignments following the central difference scheme and the medial axistransformation  have  shown  comparable  performance,  providing  ways  of  controlling  and  tailoringdeposition paths to best meet requirements associated with the manufacturing with short and continuousfibre-reinforcements.  The  model  with  continuous  fibre-reinforcement  has  shown  great  potential  forimproving the specific stiffness compared to the isotropic functional counterpart used as benchmark,while  additionally  providing  the  potential  for  energy  storage,  constituting  a  promising  theoreticalapproach as to how AM can serve as means for lightweighting through functional integration. It wasconcluded, that in pursuit of improving the efficient material usage, tailored shell-infill designs shouldbe considered in the future.
AU  - Plocher,J
AU  - Lee,C
AU  - Panesar,A
PB  - ICCM
PY  - 2019///
TI  - Additive manufacturing of bone-inspired structural-power composites
UR  - http://hdl.handle.net/10044/1/73850
ER  -
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