Matrix cracks around fibre breaks and their effect on stress redistribution and failure development in unidirectional composites

被引：86

作者：

Swolfs, Yentl ^{[1
]}

McMeeking, Robert M. ^{[2
,3
,4
]}

Verpoest, Ignaas ^{[1
]}

Gorbatikh, Larissa ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Mat Engn, Leuven, Belgium

[2] Univ Calif Santa Barbara, Dept Mech Engn, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[4] Univ Aberdeen, Kings Coll, Sch Engn, Aberdeen AB24 3UE, Scotland

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2015年 / 108卷

关键词：

Polymer-matrix composites (PMCs); Matrix cracking; Stress concentrations; Probabilistic methods; REINFORCED COMPOSITES; TENSILE-STRENGTH; SHEAR-LAG; FIBROUS COMPOSITES; INFLUENCE SUPERPOSITION; CFRP COMPOSITES; BROKEN FIBER; DAMAGE; MODEL; EPOXY;

D O I：

10.1016/j.compscitech.2015.01.002

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Despite the crucial significance of failure prediction in composites, such an objective remains challenging, even in unidirectional (UD) systems. A strength model for UD composites was used that has great versatility in handling various matrix and fibre behaviours. This model includes a simplified superposition principle that was found to be reliable in predicting stress concentration factors irrespective of the presence of matrix cracks. The model revealed the negligible influence of matrix cracks on stress concentrations, ineffective length, cluster development and failure strain. The presence of matrix cracks can therefore be safely neglected in models for UD composites. This information is important for experimental validations and for advancing the state of the art in strength models for UD composites. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：16 / 22

页数：7

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