埋め込みFBGセンサを用いた有孔積層板の損傷同定に関する数値解析および実験結果への適用

Translated title of the contribution: Numerical Study for Identifying Damage in Open Hole Composites with Embedded FBG Sensors and Its Application to the Experimental Results

矢代 茂樹, 村井 一恵, 岡部 朋永, 武田 展雄

Research output: Contribution to journalArticle

Abstract

This study proposes two new approaches for estimating the damage patterns in a holed CFRP cross-ply laminate using an embedded fiber Bragg grating (FBG) sensor. It was experimentally confirmed that the reflection spectrum from the embedded FBG sensor drastically changed as the damage near the hole, i.e. splits, transverse cracks and delamination, extended. The damage patterns were predicted using forward analysis (a damage analysis and an optical analysis) with strain estimation and the proposed damage-identification method as well as the forward analysis only. The forward analysis with the strain estimation then to be yielding the best prediction from the viewpoint of the accuracy in estimating the damage pattern and the computational efficiency. Furthermore, the proposed damage identification achieved a significant reduction in the computational time and the equivalent accuracy compared to the conventional identification procedure, adopting the damage pattern obtained by the damage analysis as the initial estimation.
Translated title of the contributionNumerical Study for Identifying Damage in Open Hole Composites with Embedded FBG Sensors and Its Application to the Experimental Results
Original languageJapanese
Pages (from-to)208-217
Number of pages10
Journal日本複合材料学会誌
Volume32
Issue number5
DOIs
Publication statusPublished - Sep 15 2006

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