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A Study on Interior Noise Characteristics of High-speed Trains

고속철도 차량의 실내소음 특성 연구

  • Noh, Hee-Min (Dept. of High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Choi, Sunghoon (Dept. of High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Kim, Seog-Won (Dept. of High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Hong, Suk-Yoon (Dept. of Naval Architecture & Ocean Engineering, College of Engineering, Seoul National University)
  • Received : 2012.07.11
  • Accepted : 2012.12.17
  • Published : 2013.02.28

Abstract

Because excessive interior noise when riding a high-speed train leads to annoyances, fatigue and stress for passengers, interior noise reduction methods should be considered. In particular, a high-speed train operated in various operation environments, and in South Korea, these include open fields and tunnels. Therefore, a specific study about changes in interior noise characteristics according to different environments is necessary. For this reason, the interior noise characteristics on a KTX train and on the KTX-Sancheon train were analyzed from noise measurements using microphones in this paper. Vibrations on the axles, bogies and floor were also measured, are these area are structural paths for interior noise. From this research, the interior noise characteristics according to the driving speed were deduced and the effects on interior noise by driving environments such as open fields and tunnels were investigated. Furthermore, the effect on interior noise by axles, bogies and floor vibrations were analyzed from a transfer function analysis.

Acknowledgement

Grant : 430km/h급 고속열차 시운전 시험 연구

Supported by : 국토해양부

References

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