OS0526 アルミメッシュシート組込みCFRP複合材料の曲げ強度特性に及ぼす模擬雷撃損傷の影響

Abstract

CFRP composites are used about 50 % for the body of Boeing 787 jet plane. Many kind of damage, for example bird strike or lightning hit, may be introduced in the airplane during the long time use. The effect of simulated lightning hit damage on the flexural strength of CFRP with aluminum mesh sheet, were investigated . The flexural strength of CFRP without metal mesh sheet decrease strongly, depending on the through-thickness type lightning hit damage. On the other hand, that of CFRP with aluminum mesh sheet decrease slightly under through-thickness type lightning hit damage, and that of the CFRP with aluminum mesh sheet do not decrease under surface type lightning hit damage. The effect of cure temperature on the strength of CFRP with and without metal mesh sheet, were slightly recognized. The flexural strength of CFRP with aluminum mesh sheet against lightning hit damage was almost similar to the result of CFRP with copper mesh sheet.