Multiscale tool-fabric contact observation and analysis for composite fabric forming
Multiscale tool-fabric contact observation and analysis for composite fabric forming
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DOI：
10.1016/j.compositesa.2015.03.009
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发表时间：
2015-06-01
影响因子：
8.7
通讯作者：
Sutcliffe, Michael P. F.
中科院分区：
文献类型：
--
作者：
Smerdova, Olga;Sutcliffe, Michael P. F.
本文对斜纹碳纤维织物与平板玻璃表面的真实接触面积进行了细观和微观尺度的测量和分析。与两个触点相关的介观接触面积约为标称面积的55%-75%。然而，与纤维层面的微观接触相关的丝束接触内的总实际接触长度仅为平行接触纤维的理想接触条件的4-8%，名义接触压力约为2 kpa。研究了实际接触面积与织物剪切角的关系。估计的实际接触压力是名义接触压力的15,000倍。复合材料成形中的摩擦模型或实验没有考虑真实的接触情况，与理想的填充排列相去甚远，可能无法捕捉到基本的摩擦学机理。(C)2015年提交人。由爱思唯尔有限公司出版。这是一篇在CC by License(http://creativecommons.org/licenses/by/4.0/).下的开放获取文章
This paper provides measurements and analysis at the meso and microscopic scales of the real contact area between twill carbon fabric and a flat glass counterface. The mesoscopic contact area associated with tow contacts is about 55-75% of the nominal area. However, the total real contact length within the tow contacts, associated with microscopic contact at the fibre level, is only 4-8% of the idealised contact conditions with parallel touching fibres, for a nominal contact pressure of around 2 kPa. The dependence of real contact area on fabric shear angle is also investigated. The estimated real contact pressure is 15,000 times higher than the nominal contact pressure. Models or experiments of friction in composites forming which do not take into account the real contact situation, which is very far from an idealised packing arrangement, may fail to capture the essential tribological mechanisms. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).