Esipov, I. B. and Zosimov, V. V. and Matveev, K. I. (1997) Propagation of an Acoustic Pulse of Finite Amplitude in a Granular Medium. Acoustical Physics, 43 (5). pp. 558-563. ISSN 1063-7710 http://resolver.caltech.edu/CaltechAUTHORS:20101209-142543898
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A study of propagation of a wide-band acoustic signal in a granular medium is reported. Experimental data on the propagation of pulses with an amplitude up to 3 MPa and characteristic length about 1 µs through a sample of cobalt-manganese nodules are compared with a computer model of the process. An anomalous sig'rfal absorption in the high-frequency range observed with relatively weak sounding pulses is explained under the assumption of a fractal sample structure on a certain scale. When the signal amplitude increases, the ahsorption assumes a normal power form which is evidence of substance structural changes.
|Additional Information:||© 1997 MANK Hayka Interperiodica Publishing. Received August 7, 1996. This study was supported by the Russian Foundation for Fundamental Research. Translated by M.L. Lyamshev|
|Group:||Guggenheim Jet Propulsion Center|
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|Official Citation:||Propagation of an Acoustic Pulse of Finite Amplitude in a Granular Medium I. B. Esipov, V. V. Zosimov, and K. I. Matveev p. 558-563|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||11 Dec 2010 00:19|
|Last Modified:||26 Dec 2012 12:44|
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