Using High-Speed Camera to Investigate Failure Waves in K9 Glass

The high-speed shadowgraph technique was used in the visualization of shock wave motion, and damage formation and development in the glass specimen. It is found that the failure wave formed at the shocked surface and inner interface, and propagated into the specimen following the shock wave. It is concluded that the formation of failure waves was associated with the surface of the glass-specimen, and it is a moving fractured front. The work finished here will be helpful for understanding the mechanism of failure waves. (Author)