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Detecting Backlash and Crack in Torsional Vibration of a Gear Train System

[+] Author Affiliations
M. Ghassabzadeh Saryazdi, M. H. Ghaffari Saadat

Amirkabir University of Technology, Tehran, Iran

Paper No. IMECE2002-39154, pp. 285-289; 5 pages
doi:10.1115/IMECE2002-39154
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Design Engineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Design Engineering Division
  • ISBN: 0-7918-3628-2 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

Torsional vibration of a two-stage gear train system is investigated, considering backlash and crack. Two criteria are used to detect backlash and crack for the purpose of vibration monitoring. A discretized model is considered which consists of a servomotor, a two-stage gearbox and a brake. It is shown that second moment of acceleration increases, increasing backlash. Kurtosis number diagnoses the tooth crack. Abrupt change in Kurtosis number shows that crack has been developed.

Copyright © 2002 by ASME

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