Akademik Veri Yönetim Sistemi
2nd International Conference on Technical Textiles, Faisalabad, Pakistan, 18 - 19 Şubat 2020, ss.26, (Özet Bildiri)
The materials with low Poisson ratio and negative Poisson's ratio (auxetic) have the potential to meet the demand for different materials due to their superior properties, especially in technical textiles. Thanks to its impact on damping properties, it can be used as a protective textile product as bulletproof vest, explosion-proof curtain, seat belts. Auxetic fabrics can be produced by two approaches. The first one is to fabricate auxetic fabrics by using auxetic fibres or yarns, and the second one is to manufacture auxetic fabrics from conventional yarns by using special geometrical arrangements. Comparing to woven fabric, there is a more significant Poisson effect in the knitted fabric due to its stitch structure. In this study, force analyzes were performed for knitted fabrics with a low Poisson ratio. Thus, the relationship between the Poisson ratio and impact damping effect was investigated. As a result, it was found that the fabrics with a low Poisson ratio reduce the internal tension by transmitting the applied force to the side surfaces. As the Poisson ratio decreases, the amount of energy required to obtain elongation increases, so they can absorb more energy per unit length.