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Asymmetrical Dual Charge EPCM for Delamination Monitoring of CFRP Laminate

Journal Key Engineering Materials (Volumes 321 - 323)
Volume Advanced Nondestructive Evaluation I
Edited by Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages 1309-1315
DOI 10.4028/www.scientific.net/KEM.321-323.1309
Citation Masahito Ueda et al., 2006, Key Engineering Materials, 321-323, 1309
Online since October, 2006
Authors Masahito Ueda, Akira Todoroki
Keywords Carbon Fiber Reinforced Polymer/Plastic (CFRP), Delamination, Electric Potential, Structural Reliability
Abstract

CFRP laminate is sensitive to impacts. Even a low impact creates delamination, bringing deterioration of the structural reliability. Monitoring for delamination is, therefore, indispensable to maintain the reliability of a CFRP structure. In this study, asymmetrical dual charge electric potential change method was introduced to estimate a delamination in the CFRP laminate. Delaminations were estimated using response surfaces as solver of the inverse problem. Learning data of response surfaces were calculated by FEM analyses. Actual delaminations in the CFRP laminate were successfully identified.

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