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Deduction of static surface roughness from complex excess attenuation

Nichols, Andrew; Attenborough, Keith and Taherzadeh, Shahram (2011). Deduction of static surface roughness from complex excess attenuation. Journal of the Acoustical Society of America, 129(3) EL89-EL93.

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DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1121/1.3556897
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Abstract

Data for complex excess attenuation have been used to
determine the effective surface admittance and hence characteristic roughness size of a surface comprising a random distribution of semicylindrical rods on an acoustically hard plane. The inversion for roughness
size is based on a simplified boss model. The technique is shown to be effective to within 4%, up to a threshold roughness packing density of 32%, above which the interaction between scattering elements appears to exceed that allowed by the model.

Item Type: Journal Article
Copyright Holders: 2011 Acoustical Society of America
ISSN: 0001-4966
Academic Unit/Department: Mathematics, Computing and Technology > Engineering & Innovation
Item ID: 28792
Depositing User: Users 8259 not found.
Date Deposited: 24 May 2011 15:01
Last Modified: 26 Nov 2014 06:29
URI: http://oro.open.ac.uk/id/eprint/28792
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