Wheel/Rail Adhesion and Coefficient of Friction Measurement using Downscaled Test Rig
G. Jayasree Krishnan (TU Delft - Railway Engineering)
Z. Yang (TU Delft - Railway Engineering)
Z. Li (TU Delft - Railway Engineering)
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Abstract
Creep curves characterise the behaviour of frictional forces at the wheel-rail interface. This study used the V-Track test rig to measure lateral and longitudinal creep curves under clean and dry contact conditions with practical wheel-rail contact pressures. The measured lateral and longitudinal creep curves were cross-compared to estimate the coefficient of friction of the V-Track. The measurement results and findings demonstrate the reliability of using the V-Track test rig to study the wheel-rail frictional rolling contact and to accurately measure the coefficient of friction at the wheel-rail interface, highlighting its significance in railway engineering and operational safety studies.