The effect of 3D-printed auxetic structures on fabric Poisson's ratio

Engineering of Sport 15 - Proceedings from the 15th International Conference on the Engineering of Sport (ISEA 2024)

Poisson’s ratio (PR) is defined as the negative ratio of the transverse strain to the applied axial strain. With advancements in manufacturing technologies, researchers are now able to alter the PR to fabricate materials with a negative PR. These engineered structures with negative PR are a class of mechanical metamaterials. Researchers have even printed 3D structures that have shown negative PR and have been used for improved impact protection, indentation resistance and other impact protection. Recent research has looked at the importance of the PR of fabrics and some researchers have also manufactured auxetic woven fibres using non-auxetic yarns through different knitting and weaving techniques. This research focuses on the effect of embedding printed structures (auxetic and non-auxetic) on fabric and understanding its impact on PR.