28 May '12, 4pm

VTT researcher proposes theory for sliding friction: Dr. Lasse Makkonen, Principal Scientist at VTT Technical R...

VTT researcher proposes theory for sliding friction 28 May 2012 Dr. Lasse Makkonen, Principal Scientist at VTT Technical Research Centre of Finland, has presented a first principles thermodynamic model of sliding friction between solid objects. According to his theory, the amount of friction depends on the thermodynamic surface energy per unit area of the materials in question. This concept, outlined by Gauss and Gibbs, refers to the excess energy of a surface with respect to an atomically complete contact (as in the bulk). Therefore, this treatment requires considering the growth and disappearance of the real contacts, i.e., the contact areas containing atoms that interact across the interface. —Makkonen 2012 Friction is a key phenomenon in applied physics and engineering, whose origin has been studied for centuries. Friction has a substantial effect on many everyday phen...

Full article: http://www.greencarcongress.com/2012/05/makkonen-20120528...

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