Abstract
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.
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