Sound velocity under shock compression and bct-bcc transition of Tin
ORAL
Abstract
The longitudinal sound velocity of material can be resolved from the particle velocity of window profile under shock loading. Two analysis methods are proposed. One is name for the speedy change derivative of sound velocity versus time and the other is the continue lowering of velocity plateau. We carefully analysis the experimental data from the direct reverse-impact configuration and the new sound velocity data are provided. The results show the experimental points of the longitudinal sound velocity against shock pressure are dispersive and the range of transition pressure from bct-bcc under dynamic compression is difficult to obtain.
*This research is supported by the Science and Technology Development Foundation of Chinese Academy of Engineering Physics under Grant No. 2009A0101004
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