The Abnormal Condition Monitoring of Rotary Compressor using Acoustic Emission

AE 신호를 이용한 회전형 압축기의 이상상태 감시

  • Published : 2004.10.01

Abstract

The compressor has one of important roles in refrigeration cycle and it determines refrigeration efficiency and quality This paper aims to monitor rotary compressors for room air conditioners by using Acoustic Emission(AE) technique. The reliability of rotary compressors has been evaluated through visual inspection on them after long term test. This paper describes methods for acquisition and processing AE raw signal to monitor the state of rotary compressor. A detecting method of abnormal compressor in real time is suggested and special-purpose monitoring system which can be applied to automatic manufacturing line is developed using one-chip microprocessor at low cost.

Keywords

References

  1. Khan, M. A., Shoji, T., and Takahashi, H., 1980, 'Application of AE Technique to the Study of Crack Instability,' 5th International AE Symposium Tokyo, pp.395-410
  2. EPRI, 1982, 'Acoustic Emission Monitoring of Steam Turbines,' EPRl CS-2367, Final Report, April
  3. Kim, J. S., Kim, N. K., and Bae, J. K., 1997, 'Monitoring of Tool Wear using AE Signal in Interrupted Cutting,' Journal of the Korean Society of Machine Tool Engineers, Vol. 6, No. 2, pp. 112-118
  4. Choi, N. S., and Takahashi, K., 1990, 'Characteristics of AE Wave Attenuation in Short Fiber Reinforced Plastic,' Journal of Composite Materials, Vol. 24, pp. 1012-1028 https://doi.org/10.1177/002199839002401001
  5. Na, J. R., 1993, Intel 8096 structure and design, Ohm press
  6. McBride, S. L., Hong, Y., and Pollard, M. D., 1992, 'Enhanced Fatigue Crack Detection in Aging Aircraft using Continuos AE Monitoring,' Proceedings of 11th IAES, pp. 325-332
  7. Sato, I., and Yoneyama, T., 1988, 'Diagnosis of rotating slides in rotary compressors using acoustic emission technique,' The Japanese Society for NDI, pp. 405-412
  8. Papadakis, E. P., 1984, 'Physical Acousticsand Microstructure of Iron Alloys ,' International Material Review, Vol. 29, No. 1, pp. 1-23 https://doi.org/10.1179/095066084790149147