Análise das variações do coeficiente de atrito e as correlações com os mecanismos de desgaste

Abstract

During the wear tests, the friction coefficient value varies according to the different conditions of tribological systems associated with parameters such as load, speed and contact temperature. The complex variations of friction coefficient make difficult a correlation with the measures of the signs of wear. In this paper, a method was developed for the analysis of wear using statistical techniques, which looked at the sign of the friction coefficient. From a dynamic test pin/disk, there are different types of wear mechanisms under different loading conditions. The proposed analysis allows the representation of the wear mechanisms that operate in the materials in form of a map to correlate the changes in standard deviations of the friction coefficient on the wear rate