Análisis del comportamiento de desgaste de las pastillas de freno a partir pruebas experimentales mediante la Norma NTE INEN 2 185:2010

Abstract

This research project aimed to test the reliability of two types of semi-metallic brake pads belonging to the FMX and IMFRISA brands. The NTE INEN 2 185:2010 standard was taken as a reference to analyze the hardness that determines the depth of the footprint H under a preliminary force, using a hardness tester. It was performed a spectrometric analysis through an x-ray fluorescence radiation discharge to reveal the metallic materials contained in the brake pads. Compression deformation was proposed to the friction material surface to measure the material compressibility. Shear strength was applied to small specimens to determine the shear stress on the surface of the area under tension. The specific gravity test was carried out on specimens of a specific weight to determine the compactness of the friction material. Dimensional stability was used to know its reaction on the material surface facing a temperature change. The experimental en route test was applied to establish the wear of the friction material on its surface under beneficial conditions. As a result, through the MINITAB 19 software, where an ANOVA analysis was carried out. It was observed that the brake pad with the highest wear was of the FMX brand with a higher percentage than the IMFRISA Brand . It is concluded that there are conditions in which the friction material has a greater or lesser tendency to premature wear together with the metallic characteristics that each friction material contains that show the degree of wear. Based on these analyses, it is recommended to carry out a higher number of the cycle path.