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Acoustic Absorption in Porous MaterialsAn understanding of both the areas of materials science and acoustics is necessary to successfully develop materials for acoustic absorption applications. This paper presents the basic knowledge and approaches for determining the acoustic performance of porous materials in a manner that will help materials researchers new to this area gain the understanding and skills necessary to make meaningful contributions to this field of study. Beginning with the basics and making as few assumptions as possible, this paper reviews relevant topics in the acoustic performance of porous materials, which are often used to make acoustic bulk absorbers, moving from the physics of sound wave interactions with porous materials to measurement techniques for flow resistivity, characteristic impedance, and wavenumber.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Kuczmarski, Maria A.
(NASA Glenn Research Center Cleveland, OH, United States)
Johnston, James C.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
March 1, 2011
Subject Category
Nonmetallic Materials
Report/Patent Number
Funding Number(s)
WBS: WBS 877866.
Distribution Limits
Work of the US Gov. Public Use Permitted.
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