A comparative study of helicopter planetary bearing diagnosis with vibration and acoustic emission data

Linghao Zhou, Fang Duan, David Mba, Elasha Faris

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

    8 Citations (Scopus)

    Abstract

    © 2017 IEEE. Planetary bearings inside a helicopter main gearbox (MGB) are key components, successful diagnosis of planetary bearing defects benefits helicopter maintenance, reducing accidents rate and increasing aircraft flightworthiness. Most widely adopted methods for bearing fault diagnosis are envelope analysis and kurtogram; both have achieved many successes in practical application. However, diagnosis of faulty planetary bearing inside a MGB can be more complicated for reasons such as extremely strong operating noise, overwhelming gear meshes and so on. In this paper, acoustic emission (AE) data was recorded in comparison with traditional vibration data from test rig built using commercial helicopter gearbox with seeded defects, diagnosis of vibration data and AE data is performed using kurtogram and envelope analysis, results showed that AE signals are more sensitive to excitations from defects and suffer less from background noises.
    Original languageEnglish
    Title of host publication2017 IEEE International Conference on Prognostics and Health Management, ICPHM 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages246-251
    Number of pages6
    ISBN (Print)9781509057108
    DOIs
    Publication statusPublished - 31 Jul 2017
    Event2017 IEEE International Conference on Prognostics and Health Management - Dallas, United States
    Duration: 19 Jun 201721 Dec 2017

    Publication series

    Name2017 IEEE International Conference on Prognostics and Health Management, ICPHM 2017

    Conference

    Conference2017 IEEE International Conference on Prognostics and Health Management
    Abbreviated titleICPHM
    Country/TerritoryUnited States
    CityDallas
    Period19/06/1721/12/17

    Keywords

    • acoustic emission signal
    • envelope analysis
    • helicopter main gearbox
    • kurtogram
    • planetary bearing diangosis

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