Mode II fracture behaviour monitoring for composite laminates using embedded fibre Bragg grating sensors

被引：5

作者：

Ling, Hang-yin ^{[1
]}

Lau, Kin-tak

Cheng, Li

Su, Zhongqing

机构：

[1] Hong Kong Polytech Univ, Dept Engn Mech, Hong Kong, Peoples R China

[2] Univ Sydney, Lab Smart Mat & Struct, Ctr Adv Mat Technol, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

COMPOSITE STRUCTURES | 2006年 / 76卷 / 1-2期

关键词：

delamination; mode II; ENF test; stress concentration; embedded optical fibre sensor; fibre Bragg grating (FBG) sensor;

D O I：

10.1016/j.compstruct.2006.06.013

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper presents the utility of embedded fibre Bragg grating (FBG) sensors for monitoring mode 11 fracture behaviour of glass fibre-reinforced epoxy (GF/EP) composite beams bearing a mid-plane delamination. Stress concentration at the delamination tip of the beam, induced during an end notched flexure (ENF) test, was monitored by means of the reflection spectrum obtained from the FBG sensor whose centre was located at the tip of delamination. The Bragg wavelength shift, bandwidth and intensity in such a reflection spectrum associated with a load-displacement graph were then used to characterize the fracture behaviour of the delaminated beam. (c) 2006 Published by Elsevier Ltd.

引用

页码：88 / 93

页数：6

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