Published 1996
| Published
Book Section - Chapter
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Stress wave attenuation in shock damaged rock
- Creators
- Luo, Cangli
- Ahrens, Thomas J.
- Others:
- Schmidt, S. C.
- Tao, W. C.
Abstract
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.
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.Attached Files
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Additional details
- Eprint ID
- 50690
- Resolver ID
- CaltechAUTHORS:20141022-134912422
- NAGW-1941
- NASA
- F19628-95-C-0115
- Air Force Office of Scientific Research (AFOSR)
- Created
-
2014-10-22Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Series Name
- AIP conference proceedings
- Series Volume or Issue Number
- 370
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 5571