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Stress wave attenuation in shock damaged rock

Luo, Cangli and Ahrens, Thomas J. (1996) Stress wave attenuation in shock damaged rock. In: Shock compression of condensed matter 1995. AIP conference proceedings. No.370. American Institute of Physics , Melville, NY, pp. 589-592. ISBN 1-56396-566-6.

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The attenuation of ultrasonic stress waves in samples of gabbroic rock subjected to shock loading in the 11 Gpa range were studied. We determined the damage deficits, D_p, and attenuation coefficients, α_p, for the samples with different damage deficits under dynamic strains of 2×10^(−7) and at frequencies around 2 MHz using ultrasonic pulse-echo method. A fit to the data yields the P-wave spatial attenuation coefficient versus damage deficit: α_p=40.9D_p−30.5D^2_p (db/cm). Basing on the O’Connell-Budiansky theory, the relation between attenuation coefficient and crack density is given. The predictions of α_p from Walsh’s theory agrees well with the experiment results for the samples with different damage deficits.

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Additional Information:© 1996 American Institute of Physics. Published online 05 May 1996. This research is supported by NASA (NAGW-1941) and Phillips Lab. (F19628-95-C-0115). Contribution number 5571, Division of Geological and Planetary Sciences, California Institute of Technology. We thank Professor G. Ravichandran for the use of the ultrasonic apparatus.
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Air Force Office of Scientific Research (AFOSR)F19628-95-C-0115
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Caltech Division of Geological and Planetary Sciences5571
Series Name:AIP conference proceedings
Issue or Number:370
Record Number:CaltechAUTHORS:20141022-134912422
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Official Citation:Stress wave attenuation in shock damaged rock Liu, Cangli and Ahrens, Thomas J., AIP Conference Proceedings, 370, 589-592 (1996), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50690
Deposited By: Tony Diaz
Deposited On:22 Oct 2014 21:40
Last Modified:10 Nov 2021 18:59

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