An Investigation of Microstructure of the Worn Surfaces on Drum in Brake Systems

Abstract

Every vehicle in motion has a kinetic energy. In order to control this motion, brake systems are used in vehicles. Brake systems are utilized so as to slow down the speed of moving vehicle or to stop it when desired. Many brake systems have been developed with development of technology until today. One of them is drum brake system. In this study, damaged material is heavy vehicle drum brake system. According to spectral analysis results of the material, optical microscope images of microstructure and hardness values were obtained. At the first visual inspection of the drum brake system, part integrity preserved, however due to long-continued and hard working conditions, fatigue, wear and due to in tense corrosion, metal erosion were determined. Failure analysis was made by comparing the data obtained from experimental results with literature information.