Apparent and true friction coefficients in viscoelastic polymers

• Autorzy: Lafaye S. , Gauthier C. , Schirrer R.
• Języki publikacji: EN

Abstrakty

EN

During scratching of a viscoelastic surface with a rigid tip, the geometry of the contact changes with the sliding speed and temperature. The apparent friction is the ratio of the tangential load, which is necessary to generate the relative motion, to the applied normal load. An apparent friction model is presented here and used to analyse the experimental friction coefficient of a polymer and the effects of the asymmetry of the contact area. The true friction might also depend on the sliding speed (contact time) and temperature.

Słowa kluczowe

EN

friction; scratching; viscoelasticity; polymer

PL

polimery; tarcie; lepkosprężystość

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2002
• Tom: Vol. 7, no 3
• Strony: 847--857
• Opis fizyczny: Bibliogr. 7 poz., rys., wykr.

Twórcy

autor

Lafaye S.

• Institut Charles Sadron UPR 22 - CNRS 6 rue Boussingault, 67083 Strasbourg, FRANCE

autor

Gauthier C.

• Institut Charles Sadron UPR 22 - CNRS 6 rue Boussingault, 67083 Strasbourg, FRANCE

autor

Schirrer R.

• Institut Charles Sadron UPR 22 - CNRS 6 rue Boussingault, 67083 Strasbourg, FRANCE

Bibliografia

• [1] Bowden F.P. and Tabor D. (1950-1954): Friction and Lubrication of Solids. - vol.l and 2, Oxford: Clarendon Press.
• [2] Bowden F.P. and Tabor D. (1951): Friction and Lubrification of Solids. - London: Oxford University Press.
• [3] Briscoe B.J., Pelillo E. and Shinha S. (1996): Scratch hardness and deformation maps for polycarbonate and polyethylene. - Polymer Engineering and Science, vol.36, No.2, pp.2996-3005.
• [4] Briscoe B.J. and Tabor D. (1975): The effect of pressure on the frictional properties of polymers. - Wear, vol.34, pp.29-38.
• [5] Challen J.M. and Oxley P.L.B. (1979): An explanation of the different regimes of friction and wear using asperity deformation models. - Wear, vol.53, pp.229-243.
• [6] Gauthier C., Lafaye S. and Schirrer R. (2001): Elastic recovery of a scratch in a polymeric surface: experiments and analysis. - Tribology International, vol.34, pp.469-479.
• [7] Gauthier C. and Schirrer R. (2000): Time and temperature dependence of the scratch properties of poly(methylmethacrylate) surfaces. - Journal of Materials Sciences, vol.35, No.9, pp.2121-2130.