Multiple Impact Behaviour of Nanoparticle Strengthened Ultra-High Molecular Weight Polyethylene Composite Ballistic Helmet

This study evaluates the performance of a ballistic helmet made from carbon nanotube reinforced Ultra-High Molecular Weight Polyethylene composites, based on experiments conducted at the Blast Impact Simulation and Testing Laboratory, Visvesvaraya National Institute of Technology (VNIT), Nagpur, India. Authors have carried out simulations using LS-Dyna ® to understand and predict the behavior of carbon nanotube reinforced ultra-high molecular weight polyethylene composite under ballistic impact conditions. The authors have validated the Finite Element model against experimental tests using a high-pressure gas gun at VNIT, Nagpur, India, with a single impact from an ogive-shaped hardened steel projectile at an impact velocity of 573 m/s. Results showed that carbon nanotube reinforcement enhanced the composite's mechanical properties, improving its ability to absorb energy and ballistic penetration resistance. The study highlights the potential of the said composites for ballistic protection, offering a balance of lightweight material and high-impact resistance. Further, it emphasizes the importance of combining simulations with experimental tests to predict material performance and suggests further optimization for enhanced protection. This research contributes to developing advanced military, law enforcement, and civilian protective gear materials.