Search for dissertations about: "rail surface damage"
Showing result 1 - 5 of 24 swedish dissertations containing the words rail surface damage.
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1. Long freight trains and long-term rail surface damage
Abstract : Track damage due to progressively increasing tonnage, especially due to longer and heavier freight trains, is one of the major problems faced in the European rail sector. In this context, to stay competitive, optimal track maintenance practices, track-friendly vehicles and safe operations of long freight trains assume prominence. READ MORE
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2. Surface defects in rails - Potential influence of operational parameters on squat initiation
Abstract : Despite significant efforts throughout the last decades, the mechanisms behind the formation of squats — a form of rolling contact fatigue (RCF) damage in rails — are not fully understood. Proposed causes of initiation involve, but are not limited to, small initial rail surface irregularities which yield high contact stresses, rail corrugation and varying friction conditions. READ MORE
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3. 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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4. Long-term rail damage evolution in railway crossings
Abstract : To accommodate the passage of wheels in intersecting traffic routes, fixed railway crossings have discontinuous rails leading to an intense load environment due to repeated wheel-rail impacts. This gives rise to high costs associated with repair and maintenance of the rails in the crossing. READ MORE
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5. Damage and defects in railway materials: influence of mechanical and thermal damage on crack initiation and propagation
Abstract : With rising societal concern for the environment, railways offer travelers a sustainable alternative to other forms of fossil-fueled transportation. In order to be competitive with airlines, for example, the railway industry must provide safe, efficient, and affordable service. READ MORE