電気ポテンシャル法を用いたCFRPはく離検出手法における電気抵抗異方性の評価

概要

論文の詳細を見る
Smart structures are one of the appropriate approaches to obtain high structural reliability of CFRP. Electrical potential method for detections of damages does not bring strength reduction of CFRP structures. However, Iaminates of CFRP have orthotropic electrical conductivity, and it is required to evaluate the effects of orthotropic electric resistance on detections of delamination. In the present study, orthotropic electrical resistance is shown to be a main factor of difference between experimental results of authors and of Moriya by FEM analyses. The analyses show the low electric conductivity in the thickness direction causes small inclination of the relation between delamination crack length and electric resistance. A new approach for measurement of the electric conductivity in the thickness direction also proposed.
一般社団法人日本機械学会の論文
1998-06-25