Local anisotropy analysis of injection moulded fibre reinforced polymer composites
Local anisotropy analysis of injection moulded fibre reinforced polymer composites
复制标题
DOI：
10.1016/j.compscitech.2008.05.022
复制
发表时间：
2008-09-01
影响因子：
9.1
通讯作者：
Dreossi, D.
中科院分区：
文献类型：
--
作者：
Bernasconi, A.;Cosmi, F.;Dreossi, D.
分析了从注塑板中提取的材料样品中的纤维取向分布，显示了常见的层状壳-核-壳结构。从样品的显微断层扫描重建开始，我们不是试图隔离每一根纤维并测量其几何特性，而是从全局各向异性参数（平均截距长度MIL）的评估中推导出组构张量的分量。该参数通常用于生物和地质结构的分析，是分析短纤维增强复合材料结构的有效工具。可以捕捉到注塑板从壳层到芯层的各向异性程度（组构张量的最大和最小特征值之比）的局部变化，并且还获得了关于局部平均纤维取向角的信息。(C)2008爱思唯尔有限公司保留所有权利。
The fibre orientation distribution in a material sample extracted from an injection moulded plate, displaying the commonly encountered layered shell-core-shell structure, was analyzed. Starting from a micro-tomography reconstruction of the sample, instead of trying to isolate each single fibre and measuring its geometrical properties, we derived the components of a fabric tensor from the evaluation of a global anisotropy parameter, the mean intercept length MIL. This parameter, commonly employed for the analysis of biological and geological structures, proved to be an efficient tool for the analysis of the structure of short fibre reinforced composites. The local variations of the degree of anisotropy (ratio of the maximum and minimum eigenvalues of the fabric tensor) from the shell to the core layers of the injection moulded plate could be captured and information about the local average fibre orientation angle was also obtained. (C) 2008 Elsevier Ltd. All rights reserved.