Analysis of a Broken Pin on the Brake System of a Car Trailer

摘要

Fatigue of materials is the degradation process that results from the cyclical dynamic loading of components in combination with other internal or external factors, e.g. corrosion, defects, etc. This paper mainly focuses on the analysis of the causes leading to the damage of a pin in a car trailer´s braking system. The damage of the pin was caused by a few, mutually independent, parameters. Several techniques such as macroscopy, microscopy (light, SEM) and dimension measurement were used for the damage analysis. The material and geometry of the pin were the main issues identified leading to the failure of the part in question.