Search for dissertations about: "Railway network"
Showing result 16 - 20 of 59 swedish dissertations containing the words Railway network.
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16. Dependability and maintenance analysis of railway signalling systems
Abstract : Railway signalling systems are composed of several different systems; each has its own purpose, but the main functionality of the overall system is determined by the interoperability between them. Railway signalling systems ensure the safe operation of the railway network, and their reliability and maintainability directly affect the capacity and availability of the railway network, in terms of both infrastructure and trains. READ MORE
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17. Increased railway infrastructure capacity through improved maintenance practices
Abstract : The expansion of economic activities and increasing mobility of people on short, medium and long distance trips is an issue that requires attention in the transport industry. The need to address this demanding issue in a sustainable and economically efficient way is the core of general capacity challenge in railway industries. READ MORE
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18. Wayside Condition Monitoring System for Railway Wheel Profiles : Applications and Performance Assessment
Abstract : The railway is an important mode of transport, due to its environmental friendliness, high safety level, and low energy consumption combined with a high transport capacity, among other factors. The Swedish railway network is old, there has been almost no expansion of the network during the past few decades, and more traffic is expected. READ MORE
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19. Mathematical modeling of electromagnetic disturbances in railway system
Abstract : By introduction of modern electronics into railway system, new challenges in understanding the electric and electromagnetic behavior of these systems arise. In this thesis, electromagnetic modeling of electric networks above dielectric and perfect electrically conducting surfaces are studied. READ MORE
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20. Damage and thermally induced defects in railway materials
Abstract : A major concern for the railway industry today is the problem of rolling contact fatigue (RCF) damage in wheels and rails as a result of increased traffic, accelerations, and loading conditions. The wheel/rail contact condition that occurs in railway applications is complex, and it is essential to understand the associated damage from combined mechanical and thermal loadings in order to predict component life and develop appropriate maintenance systems. READ MORE