Study on the Sound Radiaton Characteristics of Trains by Sound Intensity Method

음향 인텐시티법을 이용한 주행열차의 음향방사특성의 검토

  • 주진수 (한일신학대학교 건축학부) ;
  • 김재철 (한국철도기술연구원 차량연구부)
  • Published : 1998.08.01


In order to obtain basic data for the prediction of railway noise propagation, the noise radiation characteristics (source position, radiation directivity, etc) of trains were measured by using the sound intensity method. The measurements were performed at a side of railway by setting an intensity-probe array. As the measurement results, it was found that rolling noise due to interaction between wheel and rail and motor noise radiation from the lower part of train are dominant. The location of main sound sources can be described as being at the height of 0.1m in the center line of track, and the radiation directivity in the cross section of actually running trains are presented as a dipole source.


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