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Surface acoustic admittance of highly porous open-cell, elastic foamsThis work presents a comprehensive study of the surface acoustic admittance properties of graded sizes of open-cell foams that are highly porous and elastic. The intrinsic admittance as well as properties of samples of finite depth were predicted and then measured for sound at normal incidence over a frequency range extending from about 35-3500 Hz. The agreement between theory and experiment for a range of mean pore size and volume porosity is excellent. The implications of fibrous structure on the admittance of open-cell foams is quite evident from the results.
Document ID
19830047631
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lambert, R. F.
(Minnesota, University Minneapolis, MN, United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1983
Publication Information
Publication: Acoustical Society of America, Journal
Volume: 73
ISSN: 0001-4966
Subject Category
Acoustics
Accession Number
83A28849
Funding Number(s)
CONTRACT_GRANT: NAG3-161
Distribution Limits
Public
Copyright
Other

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