On the transition from shear-driven fibre compressive failure to fibre kinking in notched CFRP laminates under longitudinal compression
On the transition from shear-driven fibre compressive failure to fibre kinking in notched CFRP laminates under longitudinal compression
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DOI：
10.1016/j.compscitech.2010.03.010
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发表时间：
2010-08-01
影响因子：
9.1
通讯作者：
Curtis, P. T.
中科院分区：
文献类型：
--
作者：
Gutkin, R.;Pinho, S. T.;Curtis, P. T.
本文研究了单向和交叉铺层碳/环氧树脂缺口试件的纵向压缩破坏。开发了专用的测试夹具，以观察微观尺度下的失效过程。原位和死后断口分析揭示了两种类型的失效机制：（i）剪切驱动的纤维压缩失效和（ii）扭结带形成。事件导致失败的顺序和剪切驱动的纤维压缩故障或扭结带形成的原因进行了调查和讨论。这些发现在另一篇论文中进一步讨论（Gutkin等人，接受出版）[1]，其中使用FE微观力学模型来数值研究纵向压缩中发现的失效机制。(C)2010爱思唯尔有限公司版权所有。
This paper investigates longitudinal compressive failure in notched unidirectional and cross-ply carbon/epoxy specimens. Dedicated test jigs were developed to observe the failure processes at the microscale. In situ and post-mortem fractography reveals two types of failure mechanisms: (i) shear-driven fibre compressive failure and (ii) kink-band formation. The sequence of events leading to failure and the reasons for shear-driven fibre compressive failure or kink-band formation are investigated and discussed. Those findings are discussed further in a separate paper (Gutkin et al., accepted for publication) [1] where an FE micromechanical model is used to investigate numerically the failure mechanisms found in longitudinal compression. (C) 2010 Elsevier Ltd. All rights reserved.