An experimental study of failure initiation and propagation in 2D woven composites under compression
An experimental study of failure initiation and propagation in 2D woven composites under compression
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DOI：
10.1016/j.compscitech.2011.04.019
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发表时间：
2011-07-07
影响因子：
9.1
通讯作者：
Robinson, P.
中科院分区：
文献类型：
--
作者：
De Carvalho, N. V.;Pinho, S. T.;Robinson, P.
对正交二维机织复合材料的压缩破坏进行了实验研究。利用四点弯曲(FPB)试验装置研究了损伤的形成和组织结构的影响。扫描电子显微镜(SEM)和数字成像(DI)观察表明，载荷对齐的丝束是单独失效的，其作用是内部增强层的结构元件。编织结构和内部几何形状被认为影响损伤起始的位置和形态。利用压缩压缩试验装置研究了损伤扩展和堆积效应。光学显微镜观察表明，堆积构型对损伤形态有显著影响。此外，结果还表明，堆积的效果是组织结构和内部几何形状的函数。(C)2011爱思唯尔有限公司。保留所有权利。
Experimental research was conducted to investigate the compressive failure of orthogonal 2D woven composites. Damage initiation and the effect of weave architecture were studied using a Four Point Bending (FPB) test setup. Scanning Electron Microscope (SEM) and Digital Imaging (DI) observations show the individual failure of the load-aligned tows, which behave as structural elements at the internal reinforcement level. Weave architecture and internal geometry are seen to affect location and morphology of the damage initiation. Damage propagation and the effect of stacking were studied using a reduced Compact Compression (rCC) test setup. Optical micrographs show that stacking configuration can have a significant effect on the damage morphology. Additionally, results also suggest the effect of stacking is a function of the weave architecture and internal geometry. (C) 2011 Elsevier Ltd. All rights reserved.