S0404-2-5 CFRPの材料特性が雷撃損傷挙動および雷撃後の圧縮強度特性に及ぼす影響(衝撃問題の新たなる展開と応用(2))

概要

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In this paper, artificial lightning strike tests and residual compression tests were performed in accordance with Compression After Impact (CAI) test standard for two kinds of Carbon fiber reinforced plastic (CFRP) using unidirectional prepregs, IM600/133 and T700SC/EP827, which have different electrical and mechanical property. NDT results after the artificial lightning tests show in-plane size of delamination damage in two kinds of CFRP caused by artificial lightning strikes differed due to difference of interlaminar fracture toughness. On the other hand, despite significant difference of resistivity in out-of-plane direction of the two materials, out-of-plane size of delamination damage was approximately on a level. Therefore it is suggested that it was more influenced by electrical dielectric breakdown field and thermal property than electrical resistivity. Though residual compressive strength after artificial lightning strike (CAL strength) of IM600/133, which consist of high toughness, resin was higher than T700SC/EP827, ratio of CAL strength and None-hole Compressive (NHC) strength were almost same.
社団法人日本機械学会の論文
2009-09-12