Spalling Size Evaluation of Rolling Element Bearing Using Acoustic Emission

Abstract:

Spalling of the races or rolling elements is one of the most common faults in rolling element bearings. Exact estimation of the spall size is helpful to the life prediction for rolling element bearings. In this paper, the dual-impulsive phenomenon in the response of a spalled rolling element bearing is investigated experimentally, where the acoustic emission signals are utilized. A new method is proposed to estimate the spall size by extracting the envelope of harmonics of the ball passing frequency on the outer race from the squared envelope spectrum. Compared with the cepstrum analysis, the proposed procedure shows more powerful anti-noise ability in the fault size evaluation.

• Periodical: Key Engineering Materials (Volumes 569-570)
• Pages: 497-504
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.569-570.497
• Online since: July 2013
• Authors: An Bo Ming, Zhao Ye Qin, Wei Zhang, Fu Lei Chu
• Keywords: Acoustic Emission (AE), Rolling Element Bearing, Size Evaluation, Spalling, Squared Envelope Spectrum

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