Environmentally enhanced fatigue damage in glass fibre reinforced composites characterised by acoustic emission

被引：40

作者：

Kotsikos, G ^{[1
]}

Evans, JT ^{[1
]}

Gibson, AG ^{[1
]}

Hale, JM ^{[1
]}

机构：

[1] Univ Newcastle Upon Tyne, Ctr Compos Mat Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2000年 / 31卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

fatigue; mechanical properties; environmental degradation; acoustic emission; non-destructive testing;

D O I：

10.1016/S1359-835X(00)00014-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of tests has been conducted to investigate the effect of sea water absorption on fatigue damage accumulation in a glass fibre reinforced polyester laminate of the type widely used in the marine and offshore industries, using four-point bend flexural loading to ensure peak strain in the outer layers of the material most subject to seawater absorption. Pre-exposure was found to reduce the flexural strength and enhance damage, accumulation in fatigue by stimulating matrix cracking, fibre debonding and delamination. Acoustic emission (AE) was used to characterise damage accumulation. These results were found to correlate well with independent measurements of changing bending stiffness and with microstructural observations of the damaged sections. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：969 / 977

页数：9

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