121 導電性を利用した繰り返し荷重下における CFRP パッチの損傷進展評価

概要

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CFRP has some pecular electrical properties. Taking advantage of these properties, CFRP unidirectional laminates can be used as smart patches to detect the maximum strain applied on structures. In order to confirm the possibility of the practical use of the CFRP smart parch, the change in the voltage distribution due to the damages in CFRP laminate was firstly investigated. As a result, it was revealed to be more effective to measure the total electrical resistance of unidirectional CFRP laminates than to measure the electrical distribution on their surface. Secondly, it was confirmed that the residual resistance change of the unidirectional laminate increased according to the maximum strain by both the loading/unloading test and the analysis using modified δ_<ec> model. From these results, the CFRP smart patch was found to be effective to measure the maximum strain.
一般社団法人日本機械学会の論文
2003-10-17