The spall strength of metals at elevated temperatures
- High Energy Density Research Center, IVTAN, Izhorskaya 13/19, Moscow, 127412 (Russia)
- Experimental Impact Physics Division 1433, Sandia National Laboratories Albuquerque, New Mexico, (United States of America) 87185
Measurements of the spall strength of lead and tin have been carried out over a wide range of shock-wave intensities. The test samples were backed by thin foils of copper or nickel which were, respectively, 0.02 mm or 0.05 mm in thickness. These foils suppressed surface instabilities over the duration of the VISAR free surface velocity measurement. Free-surface velocity profiles showed 0.5 GPa spall strength for lead at precompression shock pressures 20 GPa or less and 0.2 GPa over the pressure range of 20 to 50 GPa. The spall strength of tin dropped from 0.7 GPa at 6 GPa shock pressure to 0.00{endash}0.05 GPa at 27 GPa shock pressure. The decrease in spall strength is explained by the onset of melting with increasing intensity of the shock wave. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 561697
- Report Number(s):
- CONF-950846--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 370; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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