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Showing result 1 - 5 of 752 swedish dissertations matching the above criteria.
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1. Energy Consumption and Running Time for Trains : modelling of running resistance and driver behaviour based on full scale testing
Abstract : The accuracy in determined energy consumption and runningtime of trains, by means of computer simulation, is dependent upon the various models used. This thesis aims at developing validated models of running resistance, train and of a generaldriver, all based on full scale testing. READ MORE
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2. On the running-in of gears
Abstract : The general trend in gear industry, today, is an increased focus on gear transmission efficiency. Gear transmission efficiency losses arise from loaded and unloaded gear contacts, seals, lubricant and bearings. One way of minimising the losses is to lower the lubricant viscosity. This will reduce the speed dependent losses. READ MORE
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3. Running-related injuries in recreational athletes. : lncidence, risk factors and effectiveness of an injury-prevention programme
Abstract : Running as a form of physical activity continues to grow in popularity and is accompanied by a number of health benefits, but one of the greatest threats that challenge these benefits is running-related injuries. The overall aim of this thesis is to identify the proportion of runners who sustain a running-related injury (incidence), possible reasons as to why they sustain these injuries (risk factors) and, finally, whether general injury-prevention guidelines can be effective in reducing the number of running-related injuries in recreational runners. READ MORE
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4. Running-in of gears - surface and efficiency transformation
Abstract : With ever shorter development times and market demands on overall system performance such as efficiency, reliability and low maintenance, accurate predictive tools are necessary and gear drives prove to be no exception. All these characteristics have an impact on a process which has remained a riddle: running-in. READ MORE
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5. Surface Integrity Characterization of Gears with respect to Running-in
Abstract : A gearbox with gears of different sizes is part of a vehicle transmission system that plays an important part in transmitting the engine power to the wheels. The efficient energy transmission highly relies on the performance of gears. Together, the mesh efficiency and durability determines the gear performance. READ MORE