Ballistic Response of Composite Helmet

The present study has been carried out in order to investigate the ballistic performance of both CFRP (Carbon Fibre-Reinforced Polymer) and Kevlar composite helmet when impacted against ogive projectile and spherical projectile within the subordnance velocity regimes. The shell thickness of the helmet was considered to be 7.5 mm. Creo software was used for modelling the helmet and LS-PrePost finite-element code was used for performing the simulations of the 3D model of helmet when it is impacted by the projectiles. The ballistic limits of both the composites helmets were obtained by varying the incident velocities of the projectiles. Further, the effect of shell thickness of the helmet, effect of the different composites, effect of the impact locations on performance and the effect of the projectile shapes on the performance parameters like maximum inside surface deformation, ballistic limit, dent region diameter and damage pattern were evaluated.