Recent advances in methods for measuring the dynamic response of geological materials to 100 GPa
Three classes of impact techniques have been employed for measuring equation-of-state properties for rocks, rock simulants and underdense materials such as natural snow. These techniques all use velocity interferometer diagnostics. One, employing a sample-in-projectile geometry, provides high-precision Hugoniot data and continuous release trajectories for dry or water-saturated materials. The majority of the present experiments have been performed with this geometry. The second, employing a sample-in-target geometry, provides loading path and Hugoniot data as well as limited release data. Materials studied by these two techniques have included a variety of tuffs, rhyolites, carbonates, grouts and epoxy-alumina mixture. The third method is well-suited for low-impedance materials, and employs ringdown wave interactions to give release information as well as Hugoniot and reshock states. This technique has been demonstrated for natural snow and several other distended materials. Uncertainties in the results from these techniques have been estimated by analyzing the effects of errors in observables and ancillary material properties.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 140801
- Report Number(s):
- SAND-91-2895C-Draft; CONF-921162-2-Draft; ON: DE92016791
- Resource Relation:
- Conference: Hypervelocity impact symposium, Austin, TX (United States), 17-20 Nov 1992; Other Information: PBD: [1991]
- Country of Publication:
- United States
- Language:
- English
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