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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2019

Improving sound transmission loss at ring frequency of a curved panel using tunable 3D-printed small-scale resonators

Résumé

An important dip in the sound transmission loss of curved panels occurs at the ring frequency. The relevance of using small-scale resonators to solve this issue is experimentally demonstrated on an aircraft sidewall panel. The effect of varying the spatial distribution of single frequency resonators (including combination with a broadband soundproofing treatment), as well as using multi-frequency resonators with a fixed spatial distribution is studied. Large improvement of the measured sound transmission loss under a diffuse acoustic field excitation is obtained around the ring frequency with limited added mass and very small alteration of the overall sound insulation performance.
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Dates et versions

hal-03373019 , version 1 (11-10-2021)

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Christophe Droz, Olivier Robin, Mohamed Ichchou, Noureddine Atalla. Improving sound transmission loss at ring frequency of a curved panel using tunable 3D-printed small-scale resonators. Journal of the Acoustical Society of America, 2019, 145 (1), pp.EL72-EL78. ⟨10.1121/1.5088036⟩. ⟨hal-03373019⟩
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