ON THE ONE NONSTANDARD PARAMETER OF A ROUGH SURFACE PROFILE

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Authors

V.V. IZMAILOV, Dr. Sc., M.V. NOVOSELOVA, Cand. Sc.

Abstract

A dimensionless profile parameter of a rough technical surface μ is proposed, which characterizes its operational properties, including tribotechnical ones. The parameter characterizes the relative location of the profile mean line along the height of the rough layer and is equal to the ratio of the maximum profile valley depth to the maximum height of the profile within the sampling length. For a symmetrical profile, μ = 0,5. Values μ > 0,5 correspond to a surface with a predominant location of the material in the upper sections of the rough layer and individual deep valleys. Such a surface has increased rigidity and wear resistance, good oil absorption, i.e. has a combination of positive tribotechnical properties. The advantages of the proposed parameter are visibility, ease of calculation and low variability

Keywords

rough surface, topography, profile, roughness parameters, operational properties.