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首页> 外文期刊>The Journal of the Textile Institute >Geometry of plain weave fabric under shear deformation. Part I: measurement of exterior positions of yarns
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Geometry of plain weave fabric under shear deformation. Part I: measurement of exterior positions of yarns

机译：平纹织物在剪切变形下的几何形状。第一部分：纱线外部位置的测量

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Behaviour of woven fabrics in all directions is important in some fabric applications. Dealing with geometrical deformation of fabric under shear stress is the main attempt of this paper. A method for detecting exterior positions of yarns in fabric, namely variation in warp-weft yarns angle and sett of yarns is developed in the present part. For this purpose, the fast Fourier transform (FFT) method is modified for detecting exterior position of yarns in sheared fabric. In an empirical work, two kinds of plain weave fabrics, cotton and polypropylene, are considered and specimens are prepared in different dimensions with identical aspect ration. Exterior positions of yarns in certain elongations are computed by proposed method for each specimen. It was found that the modified FFT technique is valid for evaluating exterior positions of yarns in sheared fabric. Moreover, it is observed that there is a critical state in behaviour of woven fabric under shear deformation. In subsequent parts, the treatment of fabric under shear deformation will be simulated and compared with results of present part.
机译：在某些织物应用中，机织物在所有方向上的行为都很重要。解决织物在剪切应力下的几何变形是本文的主要尝试。在本部分中，开发了一种检测织物中纱线外部位置的方法，即经纬纱线角度的变化和纱线凝结的方法。为此，对快速傅里叶变换（FFT）方法进行了修改，以检测剪切织物中纱线的外部位置。在一项实证研究中，考虑了两种平纹织物，即棉和聚丙烯，并以相同的纵横比以不同的尺寸制备了样品。通过提议的方法为每个样本计算一定伸长率下的纱线外部位置。结果发现，改进的FFT技术对于评估剪切织物中纱线的外部位置是有效的。而且，观察到在剪切变形下机织织物的性能处于临界状态。在随后的部分中，将模拟织物在剪切变形下的处理，并与本部分的结果进行比较。

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