214 CFRPにおける繊維うねりモニタリング(OS6-2 非破壊評価と構造モニタリング,OS6 非破壊評価と構造モニタリング)
詳細
Fiber waviness of composite structures decreases those compressive strength. Since existing NDT methods such as ultrasonic inspection do not detect the fiber waviness, a new method of detecting fiber waviness is required. In the present study, fiber waviness is monitored by measuring electrical resistance change during curing. Experimental investigation is conducted using cross-ply (90/0) composite laminate half cylinder. The generation of the waviness causes increase of the electric resistance due to the high deformation of carbon fibers. The feasibility of detecting fiber waviness is experimentally confirmed here.
