Study on the 7.62x51 mm bullet resistance of steel fiber reinforced concrete panel

Abstract

This research aimed to investigate the bullet resistance of steel fiber reinforced concrete panel at 2% by volume fraction subjected to the 7.62x51 mm bullet. The panel dimension of 400x400 mm and the thickness range of 10 – 100 mm. For the installation and experimental, the panel was installed on the steel platform with a fire distance of 50 meter. The high-speed camera was set up perpendicularly to the specimen that captured images at frame rate 40,000 fps. The panel was tested by firing 1 shot at the panel center. The captured images were used to calculate bullet velocity (before and after impaction). The results shown in terms of the failure mode, impact energy absorption, damage diameter and weight loss. The panel with thickness 60 mm, able to prevent bullet perforation. The thickness of more than 80 mm, back surface wasn’t observed damage from bullet impaction.