Vibration detection of local gear damage by advanced demodulation and residual techniques

F. Combet, L. Gelman, P. Anuzis, R. Slater

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Damage detection in a gearbox is reported based on analysis of vibration signals measured on a running aircraft engine on a test bed. The experiment was stopped due to material being found on the magnetic chip detectors in the oil system. Subsequent inspection found a significant damage to a bevel gear inside the drive train system. Three damage detection techniques are applied to the vibration signals: advanced demodulation, advanced residual technique, and the classical residual technique. Fault indicators are defined from each technique and trended over time. Results show that these techniques have the ability to provide early damage detection; however, with some noticeable difference in their feature evolution. The advantages of the techniques are compared and discussed.

Original languageEnglish
Pages (from-to)507-514
Number of pages8
JournalProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Issue number5
Early online date15 Apr 2009
Publication statusPublished - 1 May 2009
Externally publishedYes


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