Ballistic helmets fibres

A typical helmet is expected to be between 5 and 10 mm thick, dependent on both material type and applicatioa The shell thickness is normally determined experimentally by the penetration test. The shell canbe made of either an injection-moulded thermoplastic or a pressure-moulded resin system, reinforced with ballistic resistance fabrics/fibres (Mills, 1996). Energy is absorbed when the helmet is impacted, with the shell bending and deformation of the underlying foam. The amount of the impact energy absorbed by the foam depends on ... 

Marissen, R., Duurkoop, D., Hoefnagels, H., Bergsma, O. K. Creep forming of high strength polyethylene fibre prepregs for the production of ballistic protection helmets. Composites Science and Technology 2010 70(7) 1184-8 (Special issue on Chiral Smart Honeycombs). 

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