817 複合材料におけるはく離欠陥同定に対する受動型電気ポテンシャルCT法の適用性(GS-3 可視化計測)

概要

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The passive electric potential CT (computed tomography) method using piezoelectric material have been developed as a health monitoring technique. In this method, piezoelectric film is glued on the surface of a strucrure subjected to external load. Electric potential distribution on the piezoelectric film changes due to the stain distribution on the surface of the structure. If the structure has defects, the stain distribution induces charactristic electric potential distribution, which can be used for the defect identification. In this study, the passive electric potential CT method was applied to laminated composite for the identification of three-dimensional delamination defect. Electric potential distribution on piezoelectric film was caluculated by the finite element method. It was found that electric potential distribution show a charactristic change due to the location, size, and depth of the delamination.
一般社団法人日本機械学会の論文
2004-03-17