Effects of Wheel Tread with Laser-Hardened, Short-Pitch Lateral Grooves on the Friction Coefficients on the Wheel-Rail Contact Surface
Unlike traditional wheels, laser-hardened wheels with short-pitch lateral grooves provide safe braking and stable traction for all tested speeds (50 and 100 km/h) under wet conditions because the friction coefficients between the wheels and rail are nearly constant at above 0.2 regardless
of the creep level. Under dry conditions, the short-pitch lateral grooves better control the friction coefficients at a test speed of 50 km/h, reducing the energy requirements, vibration and noise.
Keywords: ADHESION; CONTACT; FRICTION COEFFICIENT; LASER HARDENING; RAIL; WHEEL
Document Type: Research Article
Publication date: 01 February 2018
- Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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