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7
Issue
vol 63 / July, 2020
Article

Algorithms for Evaluating Linear and Volumetric (Weight) Wear Rates of Materials Using a Friction Machine

L. V. Efremov
St. Petersburg State Engineering Institute, Department of Abrasive Technologies; Professor


A. V. Tikalov
Peter the Great St. Petersburg Polytechnic University, Department of Mechanical Engineering and Design; Post-Graduate Student


Abstract. Universal methods and algorithms for estimating the wear rate of materials with a friction machine at constant and variable specific pressure are considered. Special attention is paid to the study of linear and volumetric wear. Simplified formula for the wear evaluation based on geometric functions decompositions in a Taylor series are proposed. The efficiency of applying a pair of friction with variable pressure by embedding a disk in a flat sample (the chord method) is proved. The dependence of linear and volumetric wear resistance on variable pressure is revealed. Time dependence of the wear resistance is established with the account for correlation coefficients for each of the sample of materials under consideration.
Keywords: wear, wear intensity, material, friction machine, friction pair, sample, evaluation, segment, sector, testing, friction, chord

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