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Attenuation of intense sinusoidal waves in air-saturated, bulk porous materialsAs intense, initially sinusoidal waves propagate in fluids, shocks form and excess attenuation of the wave occurs. Data are presented indicating that shock formation is not necessary for the occurrence of excess attenuation in nonlinear, lossy media, i.e., air-saturated, porous materials. An empirical equation is used to describe the excess attenuation of intense sinusoids in porous materials. The acoustic nonlinearity of and the excess attenuation in porous materials may be predicted directly from dc flow resistivity data. An empirical relationship is used to relate an acoustic nonlinearity parameter to the fundamental frequency and relative dc nonlinearity of two structurally different materials.
Document ID
19870059293
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kuntz, Herbert L.
(Texas Univ. Austin, TX, United States)
Blackstock, David T.
(Texas, University Austin, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: Acoustical Society of America, Journal
Volume: 81
ISSN: 0001-4966
Subject Category
Acoustics
Accession Number
87A46567
Distribution Limits
Public
Copyright
Other

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