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Type: Conference paper
Title: Detection and location of defects in rolling element bearing using acoustic emission
Author: Larizza, F.
Howard, C.
Grainger, S.
Wang, W.
Citation: Proceedings of the 18th Australian International Aerospace Congress (AIAC18), 2019 / pp.843-848
Publisher: Engineers Australia, Royal Aeronautical Society
Publisher Place: Melbourne, Australia
Issue Date: 2019
ISBN: 9781925627213
Conference Name: 18th Australian International Aerospace Congress (AIAC) 11th Defence Science and Technology (DST) International Conference on Health and Usage Monitoring (HUMS 2019) (24 Feb 2019 - 28 Feb 2019 : Melbourne, Victoria)
Statement of
F. Larizza, C.Q. Howard, S. Grainger and W. Wang
Abstract: Rolling element bearings become worn and eventually fail by developing surface defects, such as spalls, dents and pits. Researchers have developed many methods to detect and estimate the size of defects in rolling element bearings. However, these methods do have limitations, such as when a defect with a circumferential length that is larger than the separation angle of the rolling elements cannot be distinguished from a smaller defect, and they cannot be located on the contact surfaces. This work presents a method to detect and locate defects in an operational bearing as it degrades over time, using the time delay between signals from several acoustic emission sensors. Experiments involved putting abrasive garnet into the bearing grease to accelerate the failure of the bearing, which could occur in practice from a defective seal.
Keywords: Rolling element bearing; Vibration condition monitoring; Acoustic emission
Rights: © Engineers Australia 2019
RMID: 0030109749
Published version:;dn=324200771738008;res=IELENG
Appears in Collections:Mechanical Engineering conference papers

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