A study on helicopter main gearbox planetary bearing fault diagnosis

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dc.contributor.authorZhou, Linghao
dc.contributor.authorDuan, Fang
dc.contributor.authorCorsar, Michael
dc.contributor.authorElasha, Faris
dc.contributor.authorMba, David
dc.date.accessioned2018-01-17T09:17:07Z
dc.date.available2018-01-17T09:17:07Z
dc.date.issued2017-12-20
dc.description.abstractThe condition monitoring of helicopter main gearbox (MGB) is crucial for operation safety, flight airworthiness and maintenance scheduling. Currently, the helicopter health and usage monitoring system, HUMS, is installed on helicopters to monitor the health state of their transmission systems and predict remaining useful life of key helicopter components. However, recent helicopter accidents related to MGB failures indicate that HUMS is not sensitive and accurate enough to diagnose MGB planetary bearing defects. To contribute in improving the diagnostic capability of HUMS, diagnosis of a MGB planetary bearing with seeded defect was investigated in this study. A commercial SA330 MGB was adopted for the seeded defect tests. Two test cases are demonstrated in this paper: the MGB at 16,000 rpm input speed with 180 kW load and at 23,000 rpm input speed with 1760 kW load. Vibration data was recorded, and processed using signal processing techniques including self-adaptive noise cancellation (SANC), kurtogram and envelope analysis. Processing results indicate that the seeded planetary bearing defect was successfully detected in both test cases.en_UK
dc.identifier.citationLinghao Zhou, Fang Duan, Michael Corsar, Faris Elasha, David Mba, A study on helicopter main gearbox planetary bearing fault diagnosis, Applied Acoustics, Volume 147, April 2019, Pages 4-14en_UK
dc.identifier.issn0003-682X
dc.identifier.urihttps://doi.org/10.1016/j.apacoust.2017.12.004
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12896
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectHelicopter main gearboxen_UK
dc.subjectPlanetary bearingen_UK
dc.subjectSelf-adaptive noise cancellationen_UK
dc.subjectKurtogramen_UK
dc.subjectEnvelope analysisen_UK
dc.subjectCondition monitoringen_UK
dc.titleA study on helicopter main gearbox planetary bearing fault diagnosisen_UK
dc.typeArticleen_UK

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