The response of composite armor kevlar 29 / Epoxy-Al2O3 under high velocity impact

Abstract

In this study an experimental investigation of high velocity impact responses of composite laminated plates using a helium gas gun has been presented. The aim of this study was to develop the novel composite structure that meets the specific requirements of ballistic resistance which used for body protections, vehicles and other applications. Thus the high velocity impact tests were performed on composite Kevlar-29 fiber/epoxy resin with alumina powder (Al2O3). The impact test was conducted by using a nose tip steel projectile of 7.62mm diameter at a velocity range of 160-400 m/s. The results (shown in this work) are in terms of varying plate thickness and the amount of energy absorbed by the laminated plates meanwhile the 20 mm thickness of composite plate suitable for impact loading up to 320m/s impact velocity was obtained. Therefore this composite structure (it is used to reduce the amount of Kevlar) considered most economical armor products. ANSYS AUTODYN 3D- v.12 software for simulations was used. The results have been obtained a 1.34% maximum errors with experimental work of energy absorption.