A Study Of The Diagnostic Amplitude Of Rolling Bearing Under Increasing Radial Clearance Using Modulation Signal Bispectrum

Ibrahim.A.M Rehab, Xiange Tian, Ruiliang Zhang, Andrew Ball, Fengshou Gu

Research output: Contribution to journalArticle


The rolling element bearing is a key part of machines. The accurate and timely diagnosis of its faults is critical for predictive maintenance. Most re-searches have focused on the fault location identification. To estimate the fault severity accurately, this paper focuses on the study of roller bearing vibration amplitude under increasing radial clearances due to inevitable wear using the modulation signal bispectrum (MSB). The experiment is carried out for bearings with two different clearances for the inner race fault and the outer race fault cases. The results show that the vibration amplitudes at fault characteristic frequencies exhibit significant changes with increasing clearances. However, the amplitudes of vibrations tend to increase with the severity of the outer race fault and decrease with the severity of the inner race fault. Therefore, it is necessary to take into account these effects in diagnosing the size of defect.
Original languageEnglish
JournalInternational Journal of COMADEM
Issue number3
Publication statusPublished - 1 Jan 2017
EventInternational Congress on Condition Monitoring and Diagnostic Engineering Management - Empark Grand Hotel, Xi’an, China
Duration: 20 Aug 201622 Aug 2016
Conference number: 29


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