한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제16권8호
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  • Pages.872-878
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  • 2006
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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시간-주파수 기법을 이용한 금속파편 질량 추정

Loose-part Mass Estimation Using Time-frequency Analysis

  • 박진호 (한국원자력연구소 기계공학부) ;
  • 윤두병 (한국원자력연구소 기계공학부) ;
  • 박근배 (한국원자력연구소 기계공학부) ;
  • 최영철 (한국원자력연구소 기계공학부)
  • 발행 : 2006.08.01
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초록

Mass estimation was derived as functions of acceleration magnitude and primary frequency. The conventional method of mass estimation used frequency data directly in the frequency domain. The signals that can be obtained sensor contained noise as well as impact signal. Therefore, how well we can detect the frequency data in noise directly determines the quality of mass estimation. To find exact frequency data, we used time-frequency analysis. The time-frequency methods are expected to be more useful than the conventional frequency domain analyses for the mass estimation problem on a plate type structure. Also it has been concluded that the smoothed WVD can give more reliable means than the other methodologies for the mass estimation in a noisy environment.

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참고문헌

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  11. Jeong, T. -G., 2006, 'Study on the Nonstationary Behavior of Slider Air Bearing Using Reassigned Time-frequency Analysis', Transactions of the Korean Society for Noise and Vibration Engineering, Vol.16, No.3, pp. 255-262 https://doi.org/10.5050/KSNVN.2006.16.3.255
  12. Park, Y.-K. and Kim, Y.-H. 1997, 'A Method to Reduce the Cross-talk of Wigner- Ville Distribution ; Rotating Window' , Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 7, No.2, pp. 319 -329
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피인용 문헌

  1. Computational and Experimental Analyses of the Wave Propagation Through a Bar Structure Including Liquid-Solid Interface vol.39, pp.8, 2015, https://doi.org/10.3795/KSME-A.2015.39.8.793
  2. Abnormal Sound from Heat Exchanger of Condensate Water System at Nuclear Power Plant vol.26, pp.4, 2016, https://doi.org/10.5050/KSNVE.2016.26.4.469
  3. Distance Attenuation of Bending Wave to Analyze the Loose Parts Impact Signal vol.26, pp.5, 2016, https://doi.org/10.5050/KSNVE.2016.26.5.594