Geometrical analysis of bi-stretch auxetic woven fabric based on re-entrant hexagonal geometry

Adeel Zulifqar, Hong Hu (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

This paper reports a study on the geometrical analysis of bi-stretch auxetic woven fabric based on a re-entrant hexagonal geometry. The fabric was first designed and fabricated. Then, the fabric was subjected to tensile tests, and changes in the geometry of the fabric structural unit cell at different tensile strains were observed when stretched either in the warp or weft direction. Based on the observations, a geometrical model was proposed for each stretch direction and used to establish the relationship between Poisson’s ratio and tensile strain. The semi-empirical equations for both stretch directions were finally obtained by fitting geometrical parameters with experimental results. It is expected that the semi-empirical equations obtained in this study could be used in the design and prediction of the auxetic behavior of bi-stretch auxetic woven fabrics made with the same type of materials and geometry, but with different values of geometrical parameters.

Original languageEnglish
Pages (from-to)4476-4490
Number of pages15
JournalTextile Research Journal
Volume89
Issue number21-22
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • auxetic woven fabrics
  • deformation behaviour
  • geometrical analysis
  • negative Poisson’s ratio

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

Cite this