Damage Assessment in Carbon Fibre Reinforced Polymer Plates based on Dynamic Measurements with Fibre Bragg Grating Sensors

被引：0

作者：

Frieden, J. ^{[1
]}

Cugnoni, J. ^{[1
]}

Botsis, J. ^{[1
]}

Gmur, Th. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Engn Mech, Lab Appl Mech & Reliabil Anal, CH-1015 Lausanne, Switzerland

来源：

PROCEEDINGS OF THE TENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY | 2010年 / 93卷

基金：

瑞士国家科学基金会;

关键词：

composite; impact damage; embedded FBG sensor; finite element model; dynamic strains; natural frequencies; identification; MODAL-ANALYSIS;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Dynamic strain measurements from embedded fibre Bragg grating sensors are used to evaluate the eigenfrequency changes of a carbon fibre reinforced composite plate that are due to delamination damage produced by a low energy impact. A high resolution three-dimensional representation of the damage pattern is obtained via microscale x-ray computed tomography. A detailed finite element model of the damaged plate confirms that the eigenfrequency changes can be mainly attributed to delamination damage. A homogenized damage model based on two damage factors penalising the transverse shear moduli is constructed and allows to accurately predict the eigenfrequency changes for any given damage size.

引用

页数：13

共 10 条

[1] Modal analysis and damage detection by Fiber Bragg grating sensors [J].