Abstract
This paper presents the results and findings from a testing program conducted to investigate how temperature at the wheel-rail interface may affect wheel surface performance; i.e., development of rolling contact fatigue (RCF) and wear. Under this testing program, a twin disc test machine was used to test two different types of wheel specimens (cast and forged) under a range of temperatures (ambient to 800° F) and slip ratios from 0 to 0.75 percent. This testing program included a total of 32 tests, covering two wheel materials, four different temperatures, four slip ratios, and various traction coefficients as a ratio of longitudinal and vertical wheel/rail contact forces.
Volume Subject Area:
Rail Equipment Engineering
Keywords:
wheel,
rolling contact fatigue (RCF),
wear,
wheel temperature,
slip ratio,
traction coefficient
Topics:
Disks,
Fatigue,
Rolling contact,
Temperature,
Temperature effects,
Testing,
Traction,
Wear,
Wheels
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