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http://dx.doi.org/10.5050/KSNVE.2014.24.4.275

A Study of Sound Absorbing Characteristics of the Railway Noise Barrier with Respect to Front Perforated Panel and Absorbing Material  

Kim, Kwanju (Dept. of Mechanical Engineering and System Design, Hongik Univ.)
Lee, Junheon (Dept. of Mechanical Engineering, Hongik Univ.)
Kim, Sanghun (Korea Testing Laboratory)
Park, Jinkyu (Korea Testing Laboratory)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.4, 2014 , pp. 275-281 More about this Journal
Abstract
This study has been analyzed the sound performance of the noise barriers with respect to the configuration of the front perforated panel geometries and the filled absorption materials. Noise barriers' acoustic performance should be required to meet 0.7 of NRC value at least. The global absorbing performance of the barriers have been investigated by changing the opening ratio of the front perforated panel and the absorbing characteristics of the absorbing material using two microphone method. Therefore, It it possible to obtain to increase acoustic performance of the specific frequency ranges by designing the perforate rates of the front panel and absorbing characteristics of the absorbing materials inside, as well. This study try to find out the possibilities of applying the absorbing noise barrier to railway usage.
Keywords
Noise Barrier; Absorption Coefficient; Perforated Panel;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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