The Study on Failure Pattern of Multilayer Bulletproof Steel Fibre Reinforced Concrete Panel

Abstract

In this study, failure patterns and energy absorption of multilayer bulletproof panels made of steel fibre reinforced concrete, para-rubber sheet and styrofoam sheet shot by 9 mm and 11 mm bullets were investigated. First, the study focuses on energy absorption of each type of material. Secondly, the 3 and 5 layers bulletproof panels were tested. The concept design of these multilayer bulletproof concrete panels divided into 3 layers. The first layer made of thin steel fibre reinforced concrete is aimed to reduce kinetic energy and allows bullet penetrating. The second layer made of soft materials is used to absorb the leftover kinetic energy. The last layer made of thick steel fibre reinforced concrete is used to prevent perforation and spalling. Results show that the kinetic energy absorption was found to increase with the increasing thickness and fibre volumn fraction.The multilayer bulletproof concrete panels were able to prevent both perforation and bullet ricocheting.