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Lubricant shear properties at elevated temperatures
When a lubricated hard wedge is loaded against the periphery of a rotating disc of softer metal a 'wave'
of deforming material is pushed ahead of the tool. The shear strength of the thin lubricant film between the
tool and this wave can be related to the measured forces and so the arrangement used to measure the way in
which film properties vary with pressure and shear rate. Collaborative work with the University of New South
Wales [1,2] is extending this to cover a range of temperatures from ambient to more than 200°C.
Relevant/recent publications
- Kopalinsky, E. M., Oxley, P. L. B. and Greenhill, C. 'Preliminary investigation of the influence of
temperature on the limiting shear strength of lubricant films using a sliding wedge test' submitted to
Wear.
- Kopalinsky, E. M., Oxley, P. L. B., Greenhill, C. and Williams, J. A. 'The influence of temperature on
the limiting shear strength of lubricant films using a sliding wedge test' in preparation.
Contact Details
For further information on the work summarised above contact Dr J A
Williams at Cambridge University Engineering Department, Trumpington St, Cambridge, CB2 1PZ, UK. Tel:
01223 332641, Fax: 01223 332662. E-mail: jaw@eng.cam.ac.uk
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