In situ detection of damage in CFRP laminates by electrical resistance measurements

被引：299

作者：

Abry, JC

Bochard, S

Chateauminois, A

Salvia, M

Giraud, G

机构：

[1] Ecole Cent Lyon, CNRS, UMR 5621, Dept Mat Mecan Phys, F-69131 Ecully, France

[2] Univ Aix Marseille 1, CNRS, UMR 139, Lab Phys Syst Desordonnes, Marseille, France

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 1999年 / 59卷 / 06期

关键词：

carbon fibre reinforced composites; damage detection; electrical resistance; flexural loading;

D O I：

10.1016/S0266-3538(98)00132-8

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This work deals with the possibility of in situ detection of damage in unidirectional CFRP by means of electric resistance measurements. In the first stage, the conducting paths in unloaded specimens were investigated by changing the electrode location. Results showed that conduction occurred both along the fibre and in the transverse direction by virtue of fibre-to-fibre contacts. Monotonic and cyclic flexural tests were subsequently carried out with unidirectional carbon/epoxy laminates of different fibre volume fractions. Owing to the modifications of the conduction paths during the development of damage, strong changes in the resistance were measured. This method proved to be suitable for the detection of very low damage levels in terms of fibre breaks. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：925 / 935

页数：11

共 10 条

[1]

ABRY JC, 1997, P 1 JAP FRANC SEM SM, P23

[2]

Damage mechanisms characterisation of carbon fibre/epoxy composite laminates by both electrical resistance measurements and acoustic emission analysis [J].