On the design and characterisation of low-stiffness auxetic yarns and fabrics
On the design and characterisation of low-stiffness auxetic yarns and fabrics
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DOI：
10.1177/0040517512436824
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发表时间：
2012-05-01
影响因子：
2.3
通讯作者：
Evans, Kenneth E.
中科院分区：
文献类型：
--
作者：
Wright, Julian R.;Burns, Michael K.;Evans, Kenneth E.
拉胀材料是一种表现出负泊松比的材料;当纵向拉伸时，它横向膨胀，当纵向压缩时，它横向收缩。螺旋拉胀纱是一种具有广泛应用前景的新型纤维结构。纱线的特殊机械性能可以由几何形状和组分材料特性的特定组合来确定。本文报道了低刚度拉胀纱线和织物的开发，这些纱线和织物提供了一系列应用，例如医疗器械，特别是绷带，压缩袜和支撑服装以及时装。阐明了纱线和织物的机械性能，重点是通过规定的应变范围利用显着变化的能力。纱线的泊松比低至-1.5的证明，并与平面内和平面外负泊松比的织物进行了说明。刚度是高度依赖于纱线的几何形状。
An auxetic material is one which exhibits a negative Poisson's ratio; it expands laterally when stretched longitudinally and contracts laterally when compressed longitudinally. The helical auxetic yarn is a novel fibre structure with a diverse range of potential applications. The unusual mechanical properties of the yarn can be determined by particular combinations of geometry and component material properties. This paper reports on the development of low-stiffness auxetic yarns and fabrics which offer a range of applications such as medical devices, particularly bandages, compression hosiery and support garments and fashion apparel. The mechanical performance of the yarns and fabrics is elucidated, with emphasis on the ability to exploit significant changes through a prescribed strain range. A yarn Poisson's ratio as low as -1.5 is demonstrated, and fabrics with in-plane and out-of-plane negative Poisson's ratios are illustrated. Stiffness is shown to be highly dependent upon yarn geometry.