Preliminary laboratory testing on the sound absorption of coupled cavity sonic crystal

8th International Conference on Physics and its Applications

Kristiani, R.^1,2 ; Yahya, I.^1 ; Harjana^1,2 ; Suparmi^2

Iwany Acoustics Research Group (IARG), Department of Physics, Faculty of Mathematics and Natural Sciences, Indonesia^1

Graduate School of Physics, Sebelas Maret University, Jl. Ir. Sutami 36A, Kentingan, Surakarta

57126, Indonesia^2

关键词: Coupled cavity;    Cylindrical tubes;    Helmholtz;    Laboratory test;    Laboratory testing;    Sonic crystals;    Sound absorption;    Test procedures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/776/1/012071/pdf
DOI  :  10.1088/1742-6596/776/1/012071

来源: IOP

【 摘 要 】

This paper focuses on the sound absorption performance of coupled cavity sonic crystal. It constructed by a pair of a cylindrical tube with different values in diameters. A laboratory test procedure after ASTM E1050 has been conducted to measure the sound absorption of the sonic crystal elements. The test procedures were implemented to a single coupled scatterer and also to a pair of similar structure. The results showed that using the paired structure bring a better possibility for increase the sound absorption to a wider absorption range. It also bring a practical advantage for setting the local Helmholtz resonant frequency to certain intended frequency.