Micron-Scale Fragments Ejected from Shocked Metal Surfaces Measured by Fiber-Optic Pins

The interaction mechanism was analyzed between ejecta micro-spalling and fiber-optic pins. The fiber-optic pins and pulsed in-line particles holography were applied in the diagnosis of ejecta and micro-spalling from shocked metal surface. The experimental results from fiber-optic pins are in agreement with those from pulsed in-line particles holography. In other words, the signals of fiber-optic pins illustrated the process of micron-scale fragments ejected from shocked metal surfaces. Due to the fact that fiber-optic pins have simple structures and the full-range of measurement from the zone of low areal density to the zone of thick metal sample, it is potentially effective in detecting the phenomena of shocked metal surfaces.