Title: The utilisation of pin-on-disc simulative tests for the calibration of friction in mechanical processing of materials

Authors: Valentino A.M. Cristino, Pedro A.R. Rosa, Paulo A.F. Martins

Addresses: IDMEC, Instituto Superior Tecnico, TULisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal. ' IDMEC, Instituto Superior Tecnico, TULisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal. ' IDMEC, Instituto Superior Tecnico, TULisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal

Abstract: The present paper aims to assess the friction coefficients obtained with pin-on-disc tests against those acquired in mechanical processing of materials, under similar conditions of surface texture and to evaluate the role of the mechanical properties of the pin-on-disc tribo-pairs in the overall frictional behaviour. It is shown that pin-on-disc tests, when performed with an adequate control of surface texture, are capable of providing a good estimate of the average value of the friction coefficient in mechanical processing applications and, in certain cases, when the tribo-pairs have similar mechanical properties, the value of the friction coefficient is independent of surface morphology.

Keywords: pin-on-disc tests; friction coefficients; mechanical processing; surface texture; surface roughness; simulation; cutting; forming.

DOI: 10.1504/IJSURFSE.2010.029626

International Journal of Surface Science and Engineering, 2010 Vol.4 No.1, pp.13 - 26

Published online: 30 Nov 2009 *

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