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http://dx.doi.org/10.5050/KSNVN.2009.19.6.628

A Study on the Sound Absorption Performance of a Helmholtz Resonator Combined with Porous Materials  

Lee, Dong-Hoon (서울산업대학교 기계공학과/에너지환경대학원)
Song, Hwa-Young (서울산업대학교 에너지환경대학원 에너지시스템공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.6, 2009 , pp. 628-633 More about this Journal
Abstract
The helmholtz resonator with the perforated neck has demerits that the absorption performance is not so outstanding in an anti-resonance frequency and high frequency bandwidth. In order to overcome these problems, in the paper, a resonator combined with porous material is proposed. The absorption performances of resonators are measured by two-microphone method and estimated by transfer matrix method. The experimentally measured values of normal absorption coefficients agree well with the corresponding values from the transfer matrix method. Because of the porous material, it is shown that the absorption performance have been significantly improved in the anti-resonance frequency and high frequency bandwidth.
Keywords
Absorption Coefficient; Helmholtz Resonator; Perforated Panel; Transfer Matrix Method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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