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Please use this identifier to cite or link to this item: http://dspace.lib.cranfield.ac.uk/handle/1826/6912

Document Type: Article
Title: Assessment of natural crack initiation and its propagation in slow speed bearings
Authors: Elforjani, Mohamed
Mba, David
Issue Date: 2009
Citation: M. Elforjani & D. Mba, Assessment of natural crack initiation and its propagation in slow speed bearings, Nondestructive Testing and Evaluation, Volume 24, Issue 3, 2009, Pages 261-275.
Abstract: Monitoring of bearings is an essential part of most condition monitoring programmes in rotating machinery. This paper demonstrates the use of acoustic emission (AE) measurements to detect, monitor and locate natural defect initiation and propagation in a thrust rolling element bearing. To undertake this task a special purpose test-rig was built that allowed for accelerated natural degradation of a bearing race. It is concluded that sub-surface initiation and subsequent crack propagation can be detected using a range of time and frequency domain analysis techniques on AE's generated from natural degrading bearings. The paper also investigates the source characterisation of AE signals associated with a defective bearing whilst in operation.
URI: http://dx.doi.org/10.1080/10589750802339687
Appears in Collections:Staff publications - School of Engineering

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