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Characterising the Acoustic Emission from a simulated gear contact in mixed lubrication conditions

Hutt, Simon, Clarke, Alastair, Pullin, Rhys and Evans, Henry 2019. Characterising the Acoustic Emission from a simulated gear contact in mixed lubrication conditions. Presented at: Sixth International Conference on Condition Monitoring of Machinery in Non-Stationary Operations, Santander, 20 - 22 June 2018. Advances in Condition Monitoring of Machinery in Non-Stationary Operations - Proceedings of the Sixth International Conference on Condition Monitoring of Machinery in Non-Stationary Operations.

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Abstract

Acoustic Emission (AE) measurement has been long established as a sensitive tool for detecting damage and failure in engineering structures, where sensors are used to detect the elastic stress waves originating from crack growth, impact damage, plastic deformation and other failure mechanisms. This paper examines the sensitivity of AE to mixed lubrication conditions, in order to evaluate the technique for monitoring heavily loaded power transmission gear systems where roughness scale fatigue phenomena such as micro-pitting are a problem. Experiments were conducted using a power-recirculating twin disc rig designed to investigate elastohydrodynamic contacts. Contact conditions were controlled in order to operate at a range of lubrication conditions from full film to heavily mixed lubrication. AE was found to be sensitive to contact conditions in particular frequency bands, in particular to the level of asperity contact, and a general relationship between AE and the specific film thickness was determined for these results.

Item Type: Conference or Workshop Item (Paper)
Status: In Press
Schools: Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
Date of Acceptance: 5 July 2018
Last Modified: 30 May 2019 21:28
URI: http://orca.cf.ac.uk/id/eprint/115517

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