Quantitative Grading of Spun Yarns for Appearance
Quantitative Grading of Spun Yarns for Appearance
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DOI：
10.4188/jte.52.13
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发表时间：
2006-02
影响因子：
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通讯作者：
Yong K Kim;K. Langley;F. Avşar
中科院分区：
文献类型：
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作者：
Yong K Kim;K. Langley;F. Avşar
纱线的外观是影响其商业价值的主要品质之一。纱线外观的目视分级方法在纱线制造和织物成形行业中一直被认为是一种实用的质量评估工具，本文报道了一种基于光学纱线直径测量的纱线外观客观定量分级方法。我们的研究发现，来自光学纱线直径测量的定量纱线特征是人类视觉系统在外观方面区分好纱线和坏纱线的决定因素。这些特征是纱线的光学直径、纱线直径CV%、粗处尺寸、细处尺寸、棉结尺寸和纱线直径分布。我们获得了纱线外观等级的稳健数值度量（客观判别外观指数），其是从ASTM D2255-90中描述的USDA分级Ne 20（29.5 Tex）等级A、B、C和D纱线的光学纱线直径数据导出的数值特征的线性组合。
The general appearance of a yarn is one of the primary qualities affecting its commercial value. The method of grading spun yarns by subjective visual examination has long been recognized as a practical quality assessment tool in yarn manufacturing and fabric forming industries.In this paper, we want to report an objective and quantitative method for grading spun yarn appearance derived from optical yarn diameter measurements. Our study found that quantitative yarn characteristics derived from the optical yarn diameter measurement are determining factors for a human vision system to differentiate a good yarn from a bad one in terms of appearance. These characteristics are the optical yarn diameter, the yarn diameter CV%, thick place size, thin place size, nep size and yarn diameter distribution. We obtained a robust numerical metric (objective discriminatory appearance index) for yarn appearance grade, which is a linear combination of the numerical characteristics derived from the optical yarn diameter data of the USDA graded Ne 20 (29.5 Tex) Grade A, B, C and D yarns described in ASTM D2255-90.