EXPRESS INVESTIGATIONS OF WEAR PROCESSES BY MEANS OF CYLINDRICAL COUNTERBODIES .1. CALCULATIONS AND TECHNIQUE

Linear wear intensity I-h was calculated for a fixed cylindrical body which is initially in contact along a single line with another cylindr ical body rotating at a constant velocity. The equation I-h=Zhf(L)/L $ ($) over bar$$ f(L) was obtained for I-h, where h is the depth of the wear groove formed along the path L, f(L) and $($) over bar$$ f(L) are the instantaneous and average friction coefficients, respectively, an d Z is a constant in which the shape of the counterbodies is taken int o account. The validity of the energy wear concept was assumed in the calculation. On the basis of these calculations a rapid technique for studying wear processes was proposed. In this technique the usual prel iminary formation of the wear groove is absent. The technique was used for testing different commercial materials (steels, bronze and brass) lubricated with different oils. The tribological characteristics of t he materials, determined by proposed method, are in agreement with lit erature data.