抄録
This study analyzed impact damage and tension after impact (TAI) strength of a carbon fiber-reinforced sheet molding compound (CF-SMC). First, low-velocity impact damage was introduced to CF-SMC coupon specimens for a variety of impact energies. Next, the impact damage was observed by ultrasonic inspection and optical microscopy to determine the damage state and quantify the damage area and depth. Then, TAI strength was measured and correlated with such parameters as maximum impact load, impact energy, and damage area and depth. Finally, a simple fracture-mechanics model for predicting TAI strength was proposed.
