Defect mode properties of an acoustic structure made up of periodic expansion chambers containing defects
Mohamed El Malki,
Ilyas Antraoui,
Ali Khettabi
Abstract:Noise pollution is an environmental menace in agricultural, industrial, commercial, and residential facilities of all countries around the globe particularly developing countries. This paper examines noise reduction of an acoustic band gap structure made from expansion chambers. The interface response predictions of the transmission loss are presented and compared with the experiment, and the boundary element method (BEM) data obtained from the literature showing good agreement at low frequencies. A wider band… Show more
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