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Proceedings Paper

Effect of periodic structure on sound propagation
Author(s): A. Gupta; C. H. Chew; K. M. Lim
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Paper Abstract

In this study, propagation of acoustic wave through a periodic structure has been analyzed. Such a periodic structure has been found to attenuate sound significantly in certain frequency bands, and therefore it can be used as a frequency filter and sound barrier. Experiments were performed to measure the sound attenuation by the periodic structure made of acrylic cylinders. The experimental results were compared with a simulation study using the finite element method, and they are in good agreement. The benefit of such structure is that it is light weight compared to the solid barriers, and it can be tailored according to the frequency of the sound source to be attenuated.

Paper Details

Date Published: 15 April 2010
PDF: 7 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75223D (15 April 2010); doi: 10.1117/12.851323
Show Author Affiliations
A. Gupta, National Univ. of Singapore (Singapore)
C. H. Chew, National Univ. of Singapore (Singapore)
K. M. Lim, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics

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