Defect source location of a natural defect on a high speed- rolling element bearing with Acoustic Emission

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B Eftekharnejad A. Addali D Mba

Abstract

The application of Acoustic Emission (AE) technology for machine health monitoring is gaining ground as powerful tool for health diagnosis of rolling element bearings. The successful application of AE to life prognosis of bearings is very dependent on the ability of the technology to identify and locate a defect at its earliest stage. Determining source locations of AE signals originating in real time from materials under load is one of the major advantages of the technology. This paper presents results which highlight the ability of AE to locate naturally initiated defects on high-speed roller element bearing in-situ. To date such location has only be successfully demonstrated at rotational speeds of less than 100 rpm.

How to Cite

Eftekharnejad, B. ., Addali , A. ., & Mba, D. . (2011). Defect source location of a natural defect on a high speed- rolling element bearing with Acoustic Emission. Annual Conference of the PHM Society, 3(1). https://doi.org/10.36001/phmconf.2011.v3i1.2033
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Keywords

condition monitoring,, acoustic emission, Bearing, Source Location

References
[1] Mba, D., and Rao, R. B. K. N., 2006, "Development of Acoustic Emission Technology for Condition Monitoring and Diagnosis of Rotating Machines: Bearings, Pumps, Gearboxes, Engines, and Rotating Structures," Shock and Vibration Digest, 38(1) pp. 3-16.
[2] T. Yoshioka, 1992, "Application of Acoustic Emission Technique to Detection of Rolling Bearing Failure," J. Soc. Tribologists Lubrication Eng, 49.
[3] Elforjani, M., and Mba, D., 2009, "Assessment of Natural Crack Initiation and its Propagation in Slow Speed Bearings," Nondestructive Testing and Evaluation, 24(3) pp. 261.
[4] Elforjani, M., and Mba, D. [2010], "Accelerated Natural Fault Diagnosis in Slow Speed Bearings with Acoustic Emission," Engineering Fracture Mechanics, .
[5] Physical Acoustic Co., Pci2-Based AE system user manual
[6] http://www.vallen.de/
[7] Elforjani, M., and Mba, D., 2008, "Observations and Location of Acoustic Emissions for a Naturally Degrading Rolling Element Thrust Bearing," Journal of Failure Analysis and Prevention, 8(4) pp. 370-385.
Section
Technical Papers