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Scuffing detection of TU3 cam–follower contacts by electrostatic charge condition monitoring

Booth, J.E., Harvey, T.J., Wood, R.J. and Powrie, H.E.G. (2010) Scuffing detection of TU3 cam–follower contacts by electrostatic charge condition monitoring Tribology International, 43, (1-2), pp. 113-128. (doi:10.1016/j.triboint.2009.05.004).

Record type: Article

Abstract

The increasing costs associated with lubricant development and qualification has driven the need for condition monitoring techniques to be deployed on test engines to maximise information gained from expensive testing programmes. This paper discusses the results from a motorised TU3 engine with electrostatic sensors focused on the cams. System characterisation tests and an oil starvation test were used to decouple charge mechanisms associated with a lubricated wear test, accelerated through the use of carbon black. Cross-correlation of various charge signal processing techniques, scanning electron microscopy and profilometry revealed that tribocharging dominated during running-in/mild wear and contact potential difference (CPD) dominated during the progression of severe adhesive wear. Tribocharging (the charge generated by a low conductivity fluid) has been shown to be affected by oil temperature, cam rotation speed and the presence of charged species within the lubricant. Contact potential differences was principally generated by the work function difference between oxidised and nascent regions associated with adhesive wear on the cam surface. Electrostatic monitoring which is sensitive to lubricant chemistry and wear, and can be implemented in an industry standard engine, has great potential for the lubricant industry

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More information

Published date: February 2010
Additional Information: The National Centre for Advanced Tribology at Southampton (nCATS)
Keywords: adhesive wear, cams and followers, condition monitoring, electrostatic charge, carbon black
Organisations: Engineering Sciences

Identifiers

Local EPrints ID: 72245
URI: http://eprints.soton.ac.uk/id/eprint/72245
ISSN: 0301-679X
PURE UUID: d2cc2b9b-268a-42e0-8bb1-13056a3921c2
ORCID for R.J. Wood: ORCID iD orcid.org/0000-0003-0681-9239

Catalogue record

Date deposited: 03 Feb 2010
Last modified: 18 Jul 2017 23:55

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Contributors

Author: J.E. Booth
Author: T.J. Harvey
Author: R.J. Wood ORCID iD
Author: H.E.G. Powrie

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