High Pressure Shock Wave Behavior of Greatly Distended Copper
GENERAL MOTORS TECHNICAL CENTER WARREN MI MATERIALS AND STRUCTURES LAB
Pagination or Media Count:
High pressure shock waves were produced and studied in porous copper samples by high velocity impact of flat plates. Flat plates of copper and tungsten alloy were projected at velocities up to 8 mmmicrosecs using a two- stage light gas gun. Samples of porous copper with distention ratios of 3.08, 4.46 and 8.74 32.4, 22.4 and 11.4 of solid density were studied through shock transit measurements. Analysis of the experiments reveals that a complex two-wave shock structure exists in the open called materials impacted at conditions that would result in shock stresses up to 4 Mb in solid targets. The nature of the double wave precludes the use of the Rankine-Hugoniot equations which assume that thermo-dynamic equilibrium is attained behind a discontinuous shock.
- Metallurgy and Metallography
- Solid State Physics