On matrix crack saturation in composite laminates

被引：34

作者：

Li, CS ^{[1
]}

Ellyin, F ^{[1
]}

Wharmby, A ^{[1
]}

机构：

[1] Univ Alberta, Dept Mech Engn, Edmonton, AB T6G 2G8, Canada

来源：

COMPOSITES PART B-ENGINEERING | 2003年 / 34卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

fibre; crack density; characteristic damage state;

D O I：

10.1016/S1359-8368(03)00020-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a comparative experimental investigation on matrix crack saturation in the constrained laminae of glass-fibre resin composite laminates. Fatigue tests under load and strain control were conducted on [+/- theta/90(3)](S) and [0/ +/- theta(4)/0](T) laminates, respectively. The crack density was periodically measured by using digital image method and optical microscope examination during fatigue tests, to determine crack saturation. It is found that matrix crack saturation occurs in all laminates of different lay-ups under both stress and strain control cyclic loading. The crack density at saturation in the constrained plies is dependent on the cyclic loading type, the off-axis angle of the laminates, as well as the constraining ply. Based on the strain energy release rate, a crack saturation criterion is developed and the experimental findings are qualitatively analysed. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：473 / 480

页数：8

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