OS0906 銅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電撃損傷の影響

Abstract

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