Skip to main content

Research Repository

Advanced Search

Investigating the influence of the core material on the mechanical performance of a nitinol wire wrapped helical auxetic yarn.

Faisal, Nadimul Haque; Fowlie, Andrew; Connell, Joe; Mackenzie, Sean; Noble, Ryan; Prathuru, Anil Kumar

Authors

Andrew Fowlie

Joe Connell

Sean Mackenzie

Ryan Noble



Abstract

Helical Auxetic Yarns (HAYs) can be used in a variety of applications, from healthcare to blast and impact resistance. This work focuses on the effect of the use of different core materials (e.g. rubber, polyurethane, polytetrafluoroethylene/teflon, polypropylene, polyetheretherketone, polycarbonate, acetal) with a nitinol wire wrap component on the maximum Negative Poisson Ratio (NPR) produced, and therefore the auxetic performance of Helical Auxetic Yarns (HAYs). From the analytical model, it was found that an acetal core produced the largest NPR when compared to the other six materials. The trend obtained from the experimental tensile tests (validation) correlated closely with the theoretical predictions of the NPR as axial strain was increased. The experimental method presented a maximum NPR at an average axial strain of 0.148, which was close to the strain of 0.155 predicted by theory. However, the maximum experimental NPR was significantly lower than that predicted by the analytical model.

Citation

FAISAL, N.H., FOWLIE, A., CONNELL, J., MACKENZIE, S., NOBLE, R. and PRATHURU, A.K. [2021]. Investigating the influence of the core material on the mechanical performance of a nitinol wire wrapped helical auxetic yarn. Journal of strain analysis for engineering design [online], (accepted). To be made available from: https://doi.org/10.1177/03093247211027085

Journal Article Type Article
Acceptance Date Jun 8, 2021
Deposit Date Jun 9, 2021
Publicly Available Date Jun 9, 2021
Journal Journal of strain analysis for engineering design
Print ISSN 0309-3247
Electronic ISSN 2041-3130
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1177/03093247211027085
Keywords Helical auxetic yarn (HAY); Design parameters; Negative Poisson's ratio (NPR); Nitinol; Mechanical performance; Safety applications
Public URL https://rgu-repository.worktribe.com/output/1358428

Files





You might also like



Downloadable Citations