Ballistic Impact Performance of Composite Armor Using Ultrasonic Nde and Ansys Autodyn

Abstract

The world is currently under the threat of terrorist attacks and wars. This will be very critical because the scientists have developed advanced weapons (guns, bullet) for the awesome attacks. Therefore, the safety of soldiers and vehicles of the army has become a major concern. Armors are used in defense applications to provide protection for soldiers and military vehicles. In general, armor is made from natural materials, composite materials and ceramics. Efficiency and weight are two major factors when choosing the material for armor. Because of their lower density, composites are used as material in the latest armors. In this study, the ballistic performance of composite armors was investigated using Ansys Autodyn and Ultrasonic NDE to determine an excellent surface and material configuration of the composite armor. Data acquisition software as QUT99 and PCUS11 are used to extract different features from digitized ultrasonic data. These features such as peak amplitude and Shannon entropy are used to generate the C-scan images of impacted zone. Ansys Autodyn is used to examine the ballistic performance of single layered composite armor for constant thickness and constant strike velocity. Compression between single layered armor and double layered armor is also carried out with the help of Ansys Autodyn.