Double cantilever beam testing of multidirectional laminates

被引：52

作者：

de Morais, AB ^{[1
]}

机构：

[1] Univ Aveiro, Dept Mech Engn, P-3810193 Aveiro, Portugal

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2003年 / 34卷 / 12期

关键词：

polymer-matrix composites (PMCs); laminates; delamination; fracture toughness;

D O I：

10.1016/j.compositesa.2003.08.008

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Several difficulties in the double cantilever beam (DCB) tests of multidirectional laminates often prevent valid measurements of the mode I critical strain energy release rate G(Ic). In this paper, several DCB specimens were analysed with 3D finite element models. The results showed that the undesired effects of residual stresses and of mode-mixity can be minimised. An interlaminar stress based fracture criterion predicts that the G(Ic) of multidirectional specimens is typically 10-40% higher than the G(Ic) of unidirectional [0degrees](n) laminates. This agrees with the few valid experimental data available. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1135 / 1142

页数：8

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