MONITORING NATURAL PIT PROGRESSION ON A SLOW SPEED THRUST BEARING WITH ACOUSTIC EMISSION

Document Type : Original Article

Authors

1 Assistant Prof., School of Engineering, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, UK.

2 Professor, School of Engineering, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, UK.

Abstract

ABSTRACT
This paper presents results of the use of AE signatures to detect the on-set and
propagation of cracks associated with a thrust bearing race. To facilitate the
investigation a special purpose built test-rig was employed which allowed for
accelerated crack initiation on a bearing race. It is concluded that sub-surface
initiation and crack propagation is detectable with AE technology. The results
revealed that selecting the AE technique can significantly improve defect
identification in comparison to conventional methods of analysis.

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