Dynamic Behaviour of CFRP Composite Panel for Various Impact Load Location

Abstract

As these carbon-based composites with a high specific strength came into use, the most critical features were damage tolerance and damage resistance under impact loading. The impact location plays a notable role on the behaviour of carbon fibre-reinforced plastic (CFRP) hatstiffened composite panel. The dynamic characteristics reveals the growth of delamination and its severity at two different locations. These locations are identified to exhibit the nature of failure and its associated effects. The changes in contact force, internal energy absorbed, resultant velocity, resultant acceleration and delamination length at top and bottom flanges of hat shaped stringer when the CFRP panel is hit by spherical impactor are compared using LS dyna software for the impact velocity of 150 m/s.