High Velocity Impact of Glass-Reinforced Plastic Laminates with Sharp Nose Projectile Experimental Results Versus Some Models Predictions

Abstract

This study investigates high velocity impact performance of glass-reinforced plastic (GRP) laminates struck by sharp nose conical projectiles and compares the experimental results with some available predicting models. Five models were selected for assessment. Close correlation was obtained between predicted ballistic limit velocities from the models, which incorporated projectile nose geometry with that of experimental results. Considerable scatter was observed for the other models. Projectile deviation from normal impact during perforation was the reason for this discrepancy. Successful modification was made to one of the models using residual velocity results from a high velocity impact test instead of quasi-static results.