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http://dx.doi.org/10.7782/JKSR.2012.15.4.315

Sound Insulation Strategy for the Tunnel Noise in a High Speed Train  

Kim, Seock-Hyun (Department of Mechanical and Mechatronics Engineering, Kangwon National University)
Lee, Ho-Jin (Department of Mechanical and Mechatronics Engineering, Kangwon National University)
Kim, Jung-Tae (Department of Mechanical and System Design Engineering, Hongik University)
Publication Information
Journal of the Korean Society for Railway / v.15, no.4, 2012 , pp. 315-322 More about this Journal
Abstract
In a tunnel, interior noise of a high speed train increases by 5dB~7dB. The reason is that the sound intensity of the acoustic field in the tunnel significantly increases by the reflected waves occurred in the closed space. Especially, the incident acoustic power largely increases on the outside of the compartment side panel and large transmission of noise is available through the side panel and the glass window. In this paper, the sound insulation strategy in the tunnel is proposed for the next generation high speed train under development. Specimens of the aluminum extruded panels, layered panels and double glazed window are manufactured and intensity transmission loss is measured according to ASTM E2249-02. Based on the measured data, problems in the sound insulation performance are diagnosed and the sound insulation strategy is reviewed on each panel and layered structures.
Keywords
Sound transmission loss; Tunnel noise in the high speed train; Aluminum layered panel;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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