THERMAL-CRACKING IN RAILROAD VEHICLE WHEELS SUBJECTED TO HIGH-PERFORMANCE STOP BRAKING

Authors
ORRINGER O GRAY DE
Citation
O. Orringer et De. Gray, THERMAL-CRACKING IN RAILROAD VEHICLE WHEELS SUBJECTED TO HIGH-PERFORMANCE STOP BRAKING, Theoretical and applied fracture mechanics, 23(1), 1995, pp. 55-65
Citations number
15
Categorie Soggetti
Engineering, Mechanical",Mechanics
Journal title
Theoretical and applied fracture mechanics → ACNP
ISSN journal
01678442
Volume
23
Issue
1
Year of publication
1995
Pages
55 - 65
Database
ISI
SICI code
0167-8442(1995)23:1<55:TIRVWS>2.0.ZU;2-H
Abstract
An investigation of thermal cracks observed in the wheels of certain e lectric multiple unit (EMU) locomotives in North American commuter rai l service is summarized. The cause is found to be partial reversal of the wheel rim residual hoop stress, which is initially compressive fro m the manufacturer's quench treatment. The residual stress reversal is caused by thermal stresses during high performance stop braking. Crac k propagation and failure mechanisms are summarized. Measures for prev ention are discussed.