Investigation of Impact Performance of STF Impragnated Composites

It is important to achieve high strength, modulus of elasticity, good energy damping for lightweight armor materials. For this purpose, two or more similar different materials are combined at the macro level. In way, a new structure emerges that we call composite material. A in which properties components its become evident Research on production and mechanical composites meet needs developing technology continues. Military personnel, armored vehicles many security elements tested field with lot threats (such as mines, piercing ammunition, explosives etc.). Therefore, used by should be strengthened without compromising features such lightness, cost long-term use. This study covers development Kevlar's ballistic impregnating Shear Thickening Fluid (STF). STF composed silica (AEROSIL 200) polyethylene glycol (PEG 400). STF-impregnated Kevlar fibers have been subjected impact testing low speeds. Low-speed tests were carried out drop tower. High-speed according NIJ 0101.06 Level II standards. The mass fraction was determined research parameter. change behavior ratio investigated; Although improvements observed dissipation low-speed impacts, it noted improved up certain point, then improvement decreased.