Fault detection of slow speed rolling element bearing with noise removal techniques

Kim, Eric Y. H., Tan, Andy C.C., & Yang, Bo-Suk (2008) Fault detection of slow speed rolling element bearing with noise removal techniques. In Lee , C-W (Ed.) Proceedings - 15th International Congress on Sound and Vibration (ICSV15, The Korean Society for Noise and Vibration Engineering, Daejeon, Korea, pp. 1981-1988.

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Rolling Element Bearings (REBs) are vital components in rotating machineries for providing rotating motion. In slow speed rotating machines, bearings are normally subjected to heavy static loads and a catastrophic failure can cause enormous disruption to production and human safety. Due to its low operating speed the impact energy generated by the rotating elements on the defective components is not sufficient to produce a detectable vibration response. This is further aggravated by the inability of general measuring instruments to detect and process the weak signals at the initiation of the defect accurately. Furthermore, the weak signals are often corrupted by background noise. This is a serious problem faced by maintenance engineers today and the inability to detect an incipient failure of the machine can significantly increases the risk of functional failure and costly downtime. This paper presents the application of noise removal techniques for enhancing the detection capability for slow speed REB condition monitoring. Blind deconvolution (BD) and adaptive line enhancer (ALE) are compared to evaluate their performance in enhancing the source signal with consequential removal of background noise. In the experimental study, incipient defects were seeded on a number of roller bearings and the signals were acquired using acoustic emission (AE) sensor. Kurtosis and modified peak ratio (mPR) were used to determine the detectability of signal corrupted by noise.

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ID Code: 70638
Item Type: Conference Paper
Refereed: No
ISBN: 9788996128410
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Please consult the author.
Deposited On: 30 Apr 2014 23:32
Last Modified: 30 Apr 2014 23:40

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