Dynamic response of kovar to shock and ramp-wave compression.
Complementary gas-gun and electro-magnetic pulse tests conducted in Sandia's Dynamic Integrated Compression Experimental (DICE) Facility have, respectively, probed the behavior of electronic-grade Kovar samples under controlled impact and intermediate-strain-rate ICE (Isentropic Compression Experiment) loading. In all tests, velocity interferometer (VISAR) diagnostics provided time-resolved measurements of sample response for conditions involving one-dimensional (i:e:, uniaxial strain) compression and release. Wave-profile data from the gas-gun impact experiments have been analyzed to assess the Hugoniot Elastic Limit (HEL), Hugoniot equation of state, spall strength, and high-pressure yield strength of shocked Kovar. The ICE wave-profile data have been interpreted to determine the locus of isentropic stress-strain states generated in Kovar for deformation rates substantially lower than those associated with a shock process. The impact and ICE results have been compared to examine the influence of loading rate on high-pressure strength.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1049482
- Report Number(s):
- SAND2007-4982C; TRN: US201218%%13
- Resource Relation:
- Conference: Proposed for presentation at the 15th American Physical Society Topical Conference on Shock Compression of Condensed Matter held June 24-29, 2007 in Kohala Coast, HI.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dynamic material properties of refractory materials: Molybdenum
Dynamic material properties of refractory materials: Molybdenum