Tikhomirov V.P., Gorlenko O.A. Kinetic model of friction of solids. A phenomenological model is advanced which allows to assess the relationship between the friction coefficient and the sliding velocity. The model is based on the idea about the active center being a space and time phenomenon on the friction surface. Resistance to the relative shear is assumed to be determined by the interactions between active centers located on mated surfaces of friction couples. An expression is derived allowing to assess the friction coefficient quantitatively as a function of relative sliding velocity and temperature.
Examples illustrate the obtained relationship.
Myshkin N.K. A method of comparative analysis of surface textures. Methods and results of the analysis of the texture using the images of rough surfaces are disclosed. The images of intact and corroded surfaces were coded according to their height and served as the original data. The images presented various types of surface textures which are characterized by a specific type of the matrix of occurrence. The matrix is the probability of coincidence of the azimuth orientation between the gradients of pairs of points on the surface and the spacing between them.