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Rolling Contact Fatigue Testing of Two Different Wheel Steels Under Various Temperatures and Slip Ratios

Document Series
Technical Reports
Federal Railroad Administration
Report Number
Subject Rolling Stock
Wheel, rolling contact fatigue, RCF, wear, temperature, slip ratio, traction coefficient, tests

This report presents the results and findings from a testing program conducted to investigate how wheel temperature may affect wheel surface performance, i.e., the development of rolling contact fatigue (RCF) and wear from November 2019. Under this testing program, a twin disc test machine was used to test two different types of wheel steels (i.e., cast and forged) under a range of temperatures (i.e., ambient to 800 ℉) and slip ratios from 0 to 0.75 percent. This testing program included a total of 32 tests, covering two types of wheel materials, four different temperatures, four slip ratios, and various traction coefficients as a ratio of longitudinal and vertical wheel/rail contact forces.

Last updated: Friday, July 8, 2022