Ultra-High Molecular Weight Polyethylene Composites for Ballistic Protection: Mechanisms, Modelling, and Performance

Abstract

Ultra-high molecular weight polyethylene (UHMWPE) stands as the primary material choice for developing lightweight high-performance composites used in ballistic armour systems. This review provides a complete evaluation of UHMWPE properties which enable its outstanding energy absorption performance when subjected to high-speed impacts. The paper evaluates ballistic test results from projectiles traveling at 250 to 700 m/s speeds and examines three failure modes which include delamination and shear plugging and fibre tensile rupture. The Lambert–Jonas and Reid–Wen formulations serve as analytical and numerical models to evaluate performance predictions through ballistic limit velocity (V₅₀) and energy absorption (ΔE) and back-face signature (BFS) assessments. The review examines hybrid material structures which combine aramid with carbon fibre and polyimide and shear-thickening fluids (STF) to improve structural stiffness and multi-hit resistance. The paper examines upcoming technologies such as nano-enhanced UHMWPE and thermoplastic resin systems which represent potential advancements for future lightweight armour development. The synthesis provides design guidelines for ply orientation and layer sequencing and interfacial bonding to achieve optimal performance against diverse ballistic threats.