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Use of high frequency analysis of acoustic emission signals to determine rolling element bearing condition

Cockerill, Aaron, Holford, Karen, Bradshaw, Timothy, Cole, Phil, Pullin, Rhys and Clarke, Alastair 2015. Use of high frequency analysis of acoustic emission signals to determine rolling element bearing condition. Journal of Physics. Conference Series 628 , 012074. 10.1088/1742-6596/628/1/012074

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Abstract

Acoustic Emission (AE) sensors were used to detect signals arising from a cylindrical roller bearing with artificial defects seeded onto the outer raceway. An SKF N204ECP roller bearing was placed between two double row spherical roller bearings, type SKF 22202E, and loaded between 0.29 and 1.79kN. Speed was constant at 5780rpm. High frequency analysis allowed insight into the condition of the bearings through the determination of an increase in the structural resonances of the system as the size of an artificial defect was increased. As higher loads were applied, frequencies around 100kHz were excited, indicating the release of AE possibly attributed to friction and the plastic deformation as peaks, induced through engraving of the raceway, were flattened and worn down. Sensitivity of AE to this level in bearings indicates the potential of the technique to detect the early stages of bearing failure during life tests.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
Publisher: Institute of Physics
ISSN: 1742-6588
Date of Acceptance: 30 April 2015
Last Modified: 20 Aug 2019 20:19
URI: http://orca.cf.ac.uk/id/eprint/74587

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