Experimental Study on Dynamic Behavior of Lead Plate Driven by Two Head-on Colliding Detonation Waves

In order to investigate the configuration and mass distribution of collision bulging, dynamic behaviors of Pb plate driven by collision of head-on sliding detonation waves were characterized with high-speed frame photography and pulsed X-ray radiography. Experimental results showed that a bulging similar to a shaped charge jet were produced in the collision region, which appeared as a multi-zone structure across several layers. The tip of bulging with higher velocity had a characteristic of fragmentary and cavitation because of its speed gradient and the interaction with air, and its bulk density was much lower than the pre-shock initial density of Pb. Though the root of bulging had a lower velocity and a higher density relatively, it was also in non-dense state. It suggested that the collision of sliding detonation waves, strength of materials and shock melting might play a leading role in the bulging formation process.