Search for dissertations about: "wheel fatigue"
Showing result 1 - 5 of 50 swedish dissertations containing the words wheel fatigue.
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1. Influence of rail, wheel and track geometries on wheel and rail degradation
Abstract : For more efficient railway maintenance there is a need to increase the understanding of the influence of operational conditions on wheel and rail degradation. To this end, the chosen primary investigation strategy is to employ dynamic multibody simulations, where operational conditions are altered, to estimate the influence on material deterioration. READ MORE
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2. Simulation and Measurement of Wheel on Rail Fatigue and Wear
Abstract : The life of railway wheels and rails has been decreasing in recent years. This is mainly caused by more traffic and running at higher vehicle speed. READ MORE
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3. Continuous Welded Railway Rails: Residual Stress Analyses, Fatigue Assessments and Experiments
Abstract : Railway rails are today often continuously welded. This type of joint generally requires less maintenance than is needed for the bolted joints. It has also reduced wheel damage and made the ride more comfortable. However, these joints are subject to damage. READ MORE
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4. Influence of thermal loading on mechanical properties of railway wheel steels
Abstract : Material integrity and properties of wheels are critical in railway traffic, as wheels fulfil the important function of transferring load and traction from the vehicle to the rail track. Steels with a pearlitic microstructure are commonly used for wheels due to their height strength, low cost and good wear properties. READ MORE
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5. Mechanical braking systems for trains: A study of temperatures, fatigue and wear by experiments and simulations
Abstract : Increased demand for shorter travel times, higher axle loads, increased volumes and increased punctuality of railway traffic calls for a better design and management of the railway subsystems. The present thesis deals with aspects of mechanical friction brakes, in the form of tread brakes and disc brakes. READ MORE