Search for dissertations about: "Drift och underhållsteknik"
Showing result 1 - 5 of 73 swedish dissertations containing the words Drift och underhållsteknik.
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1. Mathematical modeling of electromagnetic disturbances in railway system
University dissertation from Luleå : Luleå tekniska universitetAbstract : 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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2. Maintenance related losses a study at the Swedish National Rail Administration
University dissertation from Luleå : Luleå tekniska universitetAbstract : The global competition among companies has lead to higher demands of the production system. Quality has become an important factor for competition. Customer satisfaction depends upon the fulfillment of a number of quality parameters. Two important quality parameters are dependability and safety. READ MORE
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3. Maintenance-related incidents and accidents aspects of hazard identification
University dissertation from Luleå : Luleå tekniska universitetAbstract : The satisfaction of stakeholders depends upon the fulfilment of their requirements. Two important stakeholder requirements related to technical systems are dependability and safety. However, system operation will gradually impair its performance leading to potentially hazardous states of the system. READ MORE
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4. Development of life cycle cost model and analyses for railway switches and crossings
University dissertation from Luleå : Luleå tekniska universitetAbstract : Infrastructure managers need to have a safe and available infrastructure, so that train operators can deliver a transport product at an affordable price. In the future, as traffic volume increases, higher utilisation of the existing capacity, less time for maintenance and fewer unplanned interruptions will be critical for meeting the ever increasing need of transport capacity. READ MORE
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5. Track circuits’ robustness Modeling, measurement and simulation
University dissertation from Luleå : Luleå tekniska universitetAbstract : In countries with rough weather conditions, frequent delays cause railway companies to waste time and money. Many of these delays are related to the train detection systems, as the old DC track circuits are still used in some countries, including Sweden, our case study. READ MORE
