Influence of temperature and impact energy on low velocity impact damage severity in CFRP

This study focuses on the effect of temperature and impact energy on the damage in CFRP under low velocity impact. Quasi-isotropic laminates with a thickness of 4.1 mm were impacted with energies between 8 and 21J at temperatures ranging between 20 and 80°C. The resulting damage was assessed using ultrasonic C-scans, radiography and confocal microscopy. The residual strength was evaluated utilizing compressive tests at 20°C. It was found that...