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An Experimental Study to Evaluate Noise Characteristic of an Electric Power Driven Hammer

전동식 해머의 소음 특성 파악을 위한 흡차음 실험 연구

  • Lee, Kwang-Gil (Occupational Safety and Health Research Institute, KOSHA) ;
  • Choi, Seung-Ju (Occupational Safety and Health Research Institute, KOSHA)
  • 이광길 (한국산업안전보건공단 산업안전보건연구원) ;
  • 최승주 (한국산업안전보건공단 산업안전보건연구원)
  • Received : 2011.05.30
  • Accepted : 2011.09.23
  • Published : 2011.10.31

Abstract

The aim of this paper is to evaluate noise characteristics of an electric power driven hammer. These investigation and analysis were made according to the ISO 1680/1 and MIL-STD 7410-1 and lead-wrapping experiment method that was used to identify the principal noise sources and analyze its noise. Hammer generates loud noise and it irritates and affects many people. Repeated exposures to loud noise can lead people to permanent hearing loss. Based on the contribution analysis, we confirm that the striker part is a major noise source and it has directional noise radiation pattern, which is left and right.

Keywords

References

  1. ISO 1680/1, "Acoustics-test code for the measurement of airborne noise emitted by rotating electrical machinery-Part 1: Engineering method for free-field conditions over a reflecting plane", 1986.
  2. MIL-STD-740-1(SH), "Airborne sound measurements and acceptance criteria of shipboard equipment.", 1986.
  3. Leo L. Beranek, "Noise and Vibration Control", McGraw Hill, 1971.
  4. 이정권, "배기소음기의 음향해석 및 설계", 자동차공학회, 16(4), pp. 37-50, 1994.
  5. M.L. Munjal, "Acoustics of Ducts and Mufflers", John Wiley & Sons, Inc., 1987.
  6. 이성욱, "왕복동식 압축기의 밸브거동과 압력 맥동에 대한 연구", 한국소음진동공학회, 9(4), pp. 754-760, 1999.
  7. 박철희, "냉장고용 왕복동식 압축기의 소음특성에 관한 실험적 연구", 한국소음진동공학회 추계학술대회논문집, pp. 196-201, 1997.
  8. Masayuki Yokoi(1994). "Study of portable electric drill noise", Noise Control Eng. J. 42(4), pp. 129-139. https://doi.org/10.3397/1.2828350
  9. E. P. Rusin, "Evaluating the operating parameters of pneumatic percussion machinery", Journal of mining science, 32(6), pp. 511-515, 1996. https://doi.org/10.1007/BF02046115
  10. Y. Champoux, R. Oddo, C. Guigou, N. Atalla, "On the noise of percussion drill steel rods", Noise con94, pp. 169-174, 1994.
  11. 이광길, "고소음발생 기계류의 소음저감을 위한 공학적 대책 연구(II)", 한국산업안전보건공단 산업안전보건연구원 연구보고서, 2003.