Pitting detection in worm gearboxes with vibration analysis

F. Elasha, C. Ruiz-Cárcel, D. Mba, G. Kiat, I. Nze, G. Yebra

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)
393 Downloads (Pure)


Diagnostics of worm gear defects with vibration analysis is challenging and this is reflected in the limited number of publications. However, these gears are commonly used in many applications such as escalators, mills, and conveyors, and significant cost may arise from their down time due to unidentified defects. This paper aims to apply various vibration analysis techniques to diagnose the presence of naturally developed faults within worm gearboxes.

The condition of three different worm gearboxes were assessed using various vibration signal analysis techniques including a few statistical measures, Spectral Kurtosis and enveloping. This was undertaken in an attempt to identify the presence of defects within the worm gearboxes. It is shown that irrespective of the predominantly sliding motion of the gears, diagnosis of faults is feasible as long as the appropriate analysis technique is employed. In addition the results show sensitivity to the direction of vibration measurement.
Original languageEnglish
Pages (from-to)366-376
Number of pages11
JournalEngineering Failure Analysis
Early online date1 May 2014
Publication statusPublished - Jul 2014
Externally publishedYes

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Engineering Failure Analysis. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Engineering Failure Analysis [Vol 42 (2014)] DOI: 10.1016/j.engfailanal.2014.04.028.
© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license http://creativecommons.org/licenses/by-nc-nd/4.0/ .


  • Worm gearboxes diagnostics
  • Vibration
  • Spectral Kurtosis


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