Improvement Effect of the Sound Insulation Performance of the Corrugated Steel Panel by Sound Absorbing and Damping Materials

흡음 및 댐핑재 의한 주름강판의 차음성능 개선효과

  • 김석현 (강원대학교 공과대학 기계메카트로닉스공학과) ;
  • 서태건 (강원대학교 공과대학 기계메카트로닉스공학과) ;
  • 김정태 (홍익대학교 공과대학 기계시스템디자인공학부)
  • Received : 2010.07.02
  • Accepted : 2010.08.16
  • Published : 2010.10.26

Abstract

In the corrugated steel panels used for railway vehicles, sound insulation performance is significantly deteriorated by local resonance effect. In this study, as a countermeasure, polyurethane foam is filled in the corrugated steel panel and glass wool layer is inserted in the layered floor panel, and then improvement effect of the sound insulation performance is experimentally estimated. Based on ASTM E2249-02, intensity transmission loss is measured and estimated on the corrugated panel and floor structure. The aim of the study is to identify how the foam filling and inserting glass wool layer improve the sound insulation performance of the train body structure in aspect of the weight increment.

철도차량의 바닥재에 널리 사용되는 주름 강판은 국부공진 효과에 의하여 특정 주파수 대역에서의 차음성능이 심각하게 저하된다. 그 대책으로, 본 연구에서는 우레탄 폼재를 주름내부에 충진시키거나 유리면층을 바닥재에 적층시킨 후, 차음성능의 향상효과를 실험적으로 평가한다. 주름강판 및 바닥 적층재를 대상으로 ASTM E2249-02에 근거하여 인텐시티 투과손실을 측정하고 평가한다. 본 연구의 목적은 폼 충진이나 유리면 적층이 중량 증가 측면에서 열차 차체의 차음성능을 어느 정도 향상시키는가를 규명하는 데에 있다.

Keywords

References

  1. C.H. Hansen (1993) Sound Transmission of Corrugated Panels, Noise Control Engineering Journal, Vol. 40, pp. 187-197. https://doi.org/10.3397/1.2827834
  2. S.H. Kim, H. Jang, J. Kim (2001) Characteristics of Local Vibration Modes of the Aluminum Extruded Panels for Rail Road Vehicles, Journal of the Korean Society for Railway, Vol.4 (3), pp. 87-93.
  3. R.M. Windle, Y.W. Lam (1993) Prediction of the Sound Reduction of Profiled Metal Cladding, Inter-Noise'93, Vol. 2, pp. 999-1002.
  4. S.H. Kim et al. (2000) Sound Transmission Loss of Aluminum Extruded Panels for Railway Vehicles, Transactions of KSNVE, Vol. 10(4), pp. 662-668.
  5. S.H. Kim, H.Y. Lee, J.T. Kim, J.C. Kim (2010) Sound Insulation Design of the Corrugated Steel Panel Considering Local Resonance, Transactions of KSNVE, Vol. 20(7), pp. 672-676. https://doi.org/10.5050/KSNVE.2010.20.7.672
  6. ASTM E 2249-02, (2003) American Standards for Testing and Materials; Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Building Partitions and Elements Using Sound Intensity, American Standard Association.