Development of multilaminar composites for vehicular ballistic protection using ultra-high molecular weight polyethylene laminates and aramid fabrics

Abstract

The development of impact resistant hybrid composites for ballistic applications is a recent trend. The increased energy absorption and reduced weight are some of the advantages for using these composites. Hybrid composites constituted of ultra-high molecular weight polyethylene (UHMWPE) laminates and aramid fiber fabrics were obtained by autoclave molding. The dynamic compression test was performed using a Split Hopkinson pressure bar with a standard deformation rate. The V50 ballistic limit test was carried out following the military standard MIL-STD-662F. The ballistic table NIJ Standard 0108.01 was taken as a reference and 9 mm Luger FMJ and .44 Mag Lead SWC EXPP ammunition were used. The dynamic-mechanical properties of the hybrid composites were evaluated. The composites exhibited an areal density of 5.30 ± 0.05 kg.m−2, meeting the required criteria in NIJ 0108.01. The V50, maximum stress, tenacity, storage modulus and tan delta peak height depended on the proportion of UHMWPE used in the hybrid composites: the best results were obtained for the composites with 75% UHMWPE and 25% aramid.