A comparative study of the effectiveness of vibration and acoustic emission in diagnosing a defective bearing in a planetary gearbox
Elasha, F, Greaves, M, Mba, D and Duan, F (2016). A comparative study of the effectiveness of vibration and acoustic emission in diagnosing a defective bearing in a planetary gearbox. Applied Acoustics. 115, pp. 181-195.
|Authors||Elasha, F, Greaves, M, Mba, D and Duan, F|
Whilst vibration analysis of planetary gearbox faults is relatively well established, the application of Acoustic Emission (AE) to this field is still in its infancy. For planetary-type gearboxes it is more challenging to diagnose bearing faults due to the dynamically changing transmission paths which contribute to masking the vibration signature of interest. The present study is aimed to reduce the effect of background noise whilst extracting the fault feature from AE and vibration signatures. This has been achived through developing of internal AE sensor for helicopter transmission system. In addition, series of signal processing procedure has been developed to improved detection of incipient damage. Three signal processing techniques including an adaptive filter, spectral kurtosis and envelope analysis, were applied to AE and vibration data acquired from a simplified planetary gearbox test rig with a seeded bearing defect. The results show that AE identified the defect earlier than vibration analysis irrespective of the tortuous transmission path.
|Keywords||planetary gearbox; Acoustic Emission; vibration analysis; numerous diagnostic approaches|
|Journal citation||115, pp. 181-195|
|Digital Object Identifier (DOI)||doi:10.1016/j.apacoust.2016.07.026|
|Funder||European Aviation Safety Agency|
|13 Sep 2016|
|Publication process dates|
|Deposited||12 Aug 2016|
|Accepted||27 Jul 2016|
|Accepted author manuscript|
CC BY-NC-ND 4.0
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