Auxetic Foams for Sport Safety Applications

ALLEN, Tom, MARTINELLO, Nicolo, ZAMPIERI, Davide, HEWAGE, Trishan, SENIOR, Terry, FOSTER, Leon and ALDERSON, Andrew (2015). Auxetic Foams for Sport Safety Applications. Procedia Engineering, 112, 104-109.

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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Link to published version:: 10.1016/j.proeng.2015.07.183

Abstract

Auxetic materials offer potential to be applied to sports safety equipment. This work reports quasi-static and impact testing of auxetic open-cell polyurethane foam - fabricated with a compression and heat treatment process - in comparison to its conventional counterpart. The foam was compressed to 70% of its original dimension along each dimension during the conversion process. Quasi-static compression testing confirmed the converted foam to be auxetic, with a Poisson's ratio of -0.08. Impact testing was performed for energies up to 5.6 J with an instrumented drop rig and high-speed video. Peak accelerations were ∼3 times lower for the auxetic foams, because they prevented bottoming. This work has shown further potential for auxetic foam to be applied to sports safety devices. Future work should look to optimise foam selection and the conversion process, while comparing auxetic foam with existing materials and products.

Item Type: Article
Research Institute, Centre or Group: Centre for Sports Engineering Research
Identification Number: 10.1016/j.proeng.2015.07.183
Depositing User: Margaret Boot
Date Deposited: 05 Aug 2016 08:41
Last Modified: 19 Oct 2016 23:14
URI: http://shura.shu.ac.uk/id/eprint/12981

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