High performance Dyneema® fiber laminate for impact resistance/macro structural composites

UHMWPE composite materials are increasingly used in armors design due to their high strength-to-weight ratios and energy absorption capacities. In this study the effect of production parameters upon the terminal ballistic properties of UHMWPE composite were examined under different conditionings. The composite armor plate laminates were produced by hot pressing with three different pressing times from 10-30 minutes and the laminates conditioned at +115, +125, and +135 degrees C. The molding temperature of SK66 fiber composite has the main direct effect on the ballistic absorption energy, so the relation of molding temperature with the adhesive bonding force between layers, the thickness of the laminates, pressure and time is investigated during the optimum of the molding parameters. The results show that when the molding temperature is about 125 degrees C the ballistic absorption energy is up to the highest value. For the study of the principles of the ballistic absorption energy, the deformation and fracture area of the SK66 fiber composite laminates after ballistic impact are analyzed with the Taguchi method and the results are discussed in detail. Phenomena and mechanism of failure of the composite under ballistic impact were explained. The study results would be valuable for the optimum design.