Experimental study of brass properties t

This study presents an experimental analysis of a standard brass alloy conducted using a high-pressure gas gun to investigate the material behavior under elevated temperatures during perforation tests. The objective was to explore the effects of various impact velocities, ranging from 40 to 120 m/s, and the influence of temperatures from room temperature to 260 °C on the ballistic properties of brass. The innovative thermal chamber allowed preheating of the specimens prior to impact. Results indicated that the ballistic resistance of sheet plates is significantly affected by their behavior under dynamic loading conditions and fluctuates with temperature. The relationship between the projectile and the thin brass target plays a crucial role in determining the ballistic properties observed. Notably, the study demonstrated a decrease in the ballistic limit by 5-7% at higher temperatures, indicating thermal softening of the brass. Furthermore, variations in failure patterns were observed, with the number of petals being influenced by both impact velocity and temperature. These findings underscore the importance of thermal softening in the perforation process and present preliminary temperature data obtained through thermal imaging. A comprehensive understanding of these factors could enhance the application of brass in ballistic scenarios.