The helical auxetic yarn - A novel structure for composites and textiles; geometry, manufacture and mechanical properties
The helical auxetic yarn - A novel structure for composites and textiles; geometry, manufacture and mechanical properties
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DOI：
10.1016/j.mechmat.2011.05.003
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发表时间：
2011-09-01
影响因子：
3.9
通讯作者：
Evans, K. E.
中科院分区：
文献类型：
--
作者：
Sloan, M. R.;Wright, J. R.;Evans, K. E.
介绍了一种新型纤维结构--螺旋伸长丝。定义了纱线的几何形状，并描述了制造过程。已经制造了一系列干草，这些干草可以改变结构的几何特性。对纱线的系统研究已经完成，以评估其对几何形状伸长行为的影响。我们还对纤维和纱线的组成进行了表征，并讨论了几何和材料效应对观察到的纱线泊松比的影响。结果表明，纱线的起始缠绕角度对拉伸行为的影响最大，无论是从大小还是可以观察到的应变范围。用传统的具有正泊松比的单丝制成的纱线，观察到的最大负泊松比为-2.7。(C)2011爱思唯尔有限公司。保留所有权利。
This paper introduces a novel fibre structure known as the helical auxetic yarn (HAY). The geometry of the yarn is defined and the manufacturing process described. A range of HAYs have been manufactured that vary the geometric properties of the structure. A systematic study of the yarns has been completed to evaluate the effect on the auxetic behaviour of the geometry. We also characterise the component fibres and yarns and discuss the influence of geometric and material effects on the observed Poisson's ratio of the yarns.It can be shown that the starting wrap angle of the yarn has the greatest effect on auxetic behaviour both in terms of magnitude and the strain range over which it may be observed.The maximum negative Poisson's ratio observed for a yarn manufactured from conventionally available monofilaments with positive Poisson's ratio is -2.7. (C) 2011 Elsevier Ltd. All rights reserved.