Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2011.10a
  • /
  • Pages.457-462
  • /
  • 2011
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Sound Insulation Performance of the Side Layered Panels in the Next Generation High Speed Train

차세대 고속철도 차량 측면 적층재의 차음성능

  • 이중혁 (강원대학교 대학원 기계미카트로닉스공학과) ;
  • 이호진 (강원대학교 대학원 기계미카트로닉스공학과) ;
  • 박인석 (강원대학교 대학원 기계미카트로닉스공학과) ;
  • 김석현 (강원대학교 기계메카트로닉스공학과)
  • Published : 2011.10.27
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Abstract

The sidewall of the HEMU-400x consists of two parts. One is the multi-layered structure including aluminium extruded panel and the other is the double glazed window. When the train runs in a tunnel, the equivalent sound insulation performance of the side wall significantly influences the internal noise levels. In aspect of the sound insulation strategy, it is important to make two parts have similar performance. In this study, the intensity sound transmission loss (ITL) is measured on the specimens of the two parts. Mass law deviation (MLD) is considered in order to compare the sound insulation performance of the two parts in respect of the weight. Contribution of each part to the sound insulation is analyzed and the sound insulation strategy is investigated to reduce the interior noise.

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