Citation:
M. Elforjani, D. Mba, Natural mechanical degradation measurements in slow speed bearings, Engineering Failure Analysis, Volume 16, Issue 1, January 2009, Pages 521–532.
Abstract:
Acoustic emission (AE) technology applied to condition monitoring is gaining
acceptance as a useful complimentary tool. This paper demonstrates the use of AE
measurements to detect, monitor the growth and locate natural defect initiation
and propagation in a conventional rolling element bearing. To undertake this
task a special purpose test-rig was built to allow for accelerated natural
degradation of a bearing race. It is concluded that crack initiation and its
subsequent propagation is detectable with AE technology. The paper also
investigates the source characterisation of E signals associated with a
defective bearing whilst in operation.