Effect of periodic structure on sound propagation

A. Gupta; C. H. Chew; K. M. Lim

doi:10.1117/12.851323

14 April 2010 Effect of periodic structure on sound propagation

A. Gupta, C. H. Chew, K. M. Lim

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75223D (2010) https://doi.org/10.1117/12.851323
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

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.

Citation Download Citation

A. Gupta, C. H. Chew, and K. M. Lim "Effect of periodic structure on sound propagation", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75223D (14 April 2010); https://doi.org/10.1117/12.851323

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