Novel Experimental Method for Microscale Contact Analysis in Composite Fabric Forming
Novel Experimental Method for Microscale Contact Analysis in Composite Fabric Forming
复制标题
DOI：
10.1007/s11340-015-0044-y
复制
发表时间：
2015-10-01
影响因子：
2.4
通讯作者：
Sutcliffe, M. P. F.
中科院分区：
文献类型：
--
作者：
Smerdova, O.;Sutcliffe, M. P. F.
本文描述了一种新型实验装置和相关实验方法，旨在研究微观尺度的复合织物/工具接触。该方法的一个关键特征是，它能够直接观察纤维尺度的真实接触以及在同时施加剪切和压缩载荷下接触的演变。为了观察接触情况，使用了光学半反射涂层。开发了一种算法来分析接触图像并测量单个纤维的实际接触长度和方向。该方法适用于碳斜纹织物的微接触。与表观接触长度相比，1.9 kPa 表观压力下的实际接触长度出奇地小。还测量与摩擦相关的横向力。然而，这些结果很难解释，因为该测试产生的摩擦力与传统滑动摩擦测试中看到的摩擦力不同。
This paper describes a novel experimental rig and associated experimental method developed to investigate composite fabric/tool contact at the microscopic scale. A key feature of this method is that it enables direct observation of real contact at the scale of fibres and the evolution of this contact under simultaneous application of shear and compression loads. To observe the contact, an optical semi-reflective coating is used. An algorithm is developed to analyse the contact images and measure the real contact length and orientation of individual fibres. The method is applied to microcontacts of carbon twill fabric. The real contact length under an apparent pressure of 1.9 kPa is surprisingly small compared to the apparent contact length. Transverse forces associated with friction are also measured. However these results are difficult to interpret as the test generates friction forces which differ from those which would be seen in conventional sliding friction tests.