Fatigue life assessment for brake disc of railway vehicle

• Published in: Fatigue & fracture of engineering materials & structures Vol. 33; no. 1; pp. 37 - 42
• Main Authors: KIM, D.-J., SEOK, C.-S., KOO, J.-M., WE, W.-T., GOO, B.-C., WON, J.-I.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.01.2010; Blackwell; Wiley Subscription Services, Inc
• Subjects: Applied sciences; Braking systems; disc brake; Exact sciences and technology; Fatigue; Fatigue life; fatigue life assessment; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Railway networks; thermal stress analysis; Vehicles; Thermal stress; Fatigue life; Stress analysis; Disk brake; disc brake; Mechanical properties; fatigue life assessment; Fatigue; thermal stress analysis; Application; Railway equipment
• ISSN: 8756-758X; 1460-2695
• DOI: 10.1111/j.1460-2695.2009.01412.x

ABSTRACT The brake disc of a railway should have stability. After long‐term use, the brake disc may be seriously damaged by thermal fatigue cracks on the frictional surface. In this study, fatigue tests were carried out for a brake disc material (GC25). Furthermore, in order to determine the cause of the thermal fatigue cracks, contact pressure and thermal stress analyses were performed. From these results, the linear relation between temperature and stress variations was obtained, and the remaining life assessment of the brake disc of a railway vehicle was performed by using it.