High Velocity Impact Damage in Kevlar-29/Epoxy-AL2O3

Abstract

An experimental investigation of high velocity impact responses of composite laminated plates using a helium single stage gas gun has been presented in this paper. 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 conical 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 we obtained that the 12mm thickness of composite plate suitable for impact loading up to 200m/s impact velocity. Therefore this composite structure (it is used to reduce the amount of Kevlar) considered most economical armoure products. We used the ANSYS AUTODYN 3D- v.12 software for our simulations. The results have been obtained a 7.3% maximum errors with experimental work of energy absorption.