Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
PHYSICAL ANALYSIS AND CHARACTERIZATION OF A RAIL SQUAT DEFECT
Submission Author:
Gregory Oliveira , PA , Brazil
Co-Authors:
Gregory Oliveira, Vinicius Silva dos Reis, Carlos Vinícius de Paes Santos, Andrey Coelho das Neves, Ricardo França , Clóvis Santana, JOSÉ MARIA DO VALE QUARESMA
Presenter: Gregory Oliveira
doi://10.26678/ABCM.COBEM2019.COB2019-2286
Abstract
Rails are components that have a variety of functions, such as guiding the rail vehicle and transmitting the efforts of loading the rail vehicle to the track infrastructure. Since they are subject to stresses, they can start defects and cause catastrophic failures. The objective of this study is to characterize a rail surface defect in a rail sample provided by VALE S.A. and to define its initiation and propagation, in addition to other characteristics involved. Mechanical tests were performed and the microstructure and surface of the defect were evaluated by scanning electron microscopy (SEM).
Keywords
rail defects, rolling contact fatigue, wheel-rail contact
