Notched behaviour of discontinuous carbon fibre composites: Comparison with quasi-isotropic non-crimp fabric
Notched behaviour of discontinuous carbon fibre composites: Comparison with quasi-isotropic non-crimp fabric
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DOI：
10.1016/j.compositesa.2010.12.001
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发表时间：
2011-03-01
影响因子：
8.7
通讯作者：
Warrior, N. A.
中科院分区：
文献类型：
--
作者：
Qian, C.;Harper, L. T.;Warrior, N. A.
不连续碳纤维复合材料的缺口行为进行了比较，与非卷曲准各向同性织物的响应。拉伸试验已经进行了无缺口和缺口试样与不同的孔尺寸。两项研究已经进行了使用恒定的宽度标本和标本的一个恒定的孔宽比，采用数字图像相关产生全场染色测量。结果表明，非连续材料是缺口不敏感的，与故障往往发生在总截面远离缺口。分析应力为基础的故障标准已被应用到预测的缺口强度。(C)2010爱思唯尔有限公司保留所有权利。
Notched behaviour of discontinuous carbon fibre composites has been compared with the response of non-crimp quasi-isotropic fabric. Tensile testing has been performed for un-notched and notched specimens with different hole sizes. Two studies have been conducted using constant width specimens and specimens of a constant hole-to-width ratio, employing Digital Image Correlation to produce full-field stain measurements. Results indicate that the discontinuous material is notch insensitive, with failures often occurring in the gross-section away from the notch. Analytical stress-based failure criteria have been applied to predict the notched strength. (C) 2010 Elsevier Ltd. All rights reserved.