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http://dx.doi.org/10.5050/KSNVN.2007.17.11.1013

Prediction and Measurement of Sound Transmission Loss for Multi-layered Acoustical Materials  

Park, So-Hee (서울대학교 대학원 기계항공공학부)
Park, Chul-Min (현대자동차)
Chae, Ki-Sang (현대자동차)
Kang, Yeon-June (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.17, no.11, 2007 , pp. 1013-1020 More about this Journal
Abstract
In this paper, the predictions and measurements of sound transmission loss(STL) are discussed for various types of acoustical materials and carpets. Random incidence sound transmission losses are measured by the sound intensity method. The in-house software HONUS2005 is used to predict TL and estimate the various physical properties such as the flow resistivity, the structure factor, the porosity, the Possion's ratio, and etc. After this estimation, various multi-layered materials with a steel plate are measured and predicted. In particular, Carpets are assumed to be membranes to predict acoustical performance. To confirm this assumption, double and triple-layered cases are also observed including two different kinds of carpets.
Keywords
Sound Transmission Loss; Multi-layered Acoustical Material; Mass-law; Sound Intensity Method; Transfer Matrix Method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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