Aperiodicity effects on sound transmission through arrays of identical cylinders perpendicular to the ground

Taherzadeh, Shahram; Bashir, Imran and Attenborough, Keith (2012). Aperiodicity effects on sound transmission through arrays of identical cylinders perpendicular to the ground. Journal of the Acoustical Society of America, 132(4) EL323-EL328.

URL:	http://asadl.org/jasa/resource/1/jasman/v132/i4/pE...
DOI (Digital Object Identifier) Link:	http://dx.doi.org/doi:10.1121/1.4751991
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Abstract

Results of laboratory measurements of sound transmission through 5 × 10 arrays of meter long polyvinyl chloride pipes with lattice constants of 5 and 10 cm with filling fractions of 13% and 50% located either on medium density fibreboard or a layer of felt are reported. Ground effects and sonic crystal effects are found to be additive. Measurements and predictions show that, while there is little broadband advantage in a periodic configuration compared with a random one, a quasi-periodic arrangement in which the perturbation has a standard deviation equal to the scatterer diameter gives the best overall attenuation.

Item Type:	Journal Article
Copyright Holders:	2012 Acoustical Society of America
ISSN:	0001-4966
Funders:	EU FP7
Keywords:	sonic crystals; noise abatement; partial disorder; acoustic materials; acoustic noise; acoustic wave scattering; acoustic wave transmission; lattice constants; pipes; plastics
Academic Unit/Department:	Mathematics, Computing and Technology > Design, Development, Environment and Materials
Item ID:	34347
Depositing User:	Shahram Taherzadeh
Date Deposited:	14 Sep 2012 08:21
Last Modified:	14 May 2013 23:32
URI:	http://oro.open.ac.uk/id/eprint/34347

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