343 周波数応答に基づく CFRP 積層構造のヘルスモニタリング

概要

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Recently CFRP laminated structures have been applied to many structures of vehicles. Interlaminar strength of laminated structures is relatively low, and delamination can be induced easily by an impact load or a cyclic load. Since delamination degrades stiffness of the structures, it is need to identify delamination nondestructively. Natural frequencies have been adopted to identify delamination of CFRP laminated beams. Identification of delamination location, however, is difficult, and another parameters that can identify delamination location are needed. In the present study, an identification method of delamination for a CFRP laminated beam using the change of natural frequencies and anti-resonance frequencies. Effectiveness of the present method is evaluated in delamination identification analysis of a cross-ply beam.
一般社団法人日本機械学会の論文
2000-07-31