Search for dissertations about: "Järnväg"

Showing result 1 - 5 of 12 swedish dissertations containing the word Järnväg.

  1. 1. Development of life cycle cost model and analyses for railway switches and crossings

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Arne Nissen; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Life Cycle Cost; RAMS; Maintenance Decision; Railway Infrastructure; Switches and Crossings; Industrial engineering and economy - Industrial organisation; administration and economics; Livscykelkostnad; RAMS; Underhållsbeslut; Järnväg; Spårväxlar; Industriell teknik och ekonomi - Industriell organisation; administration och ekonomi; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : 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

  2. 2. Predictive Models for Railway Track Geometry Degradation

    University dissertation from Luleå : Luleå University of Technology

    Author : Iman Soleimanmeigouni; Alireza Ahmadi; Nalinaksh S. Vyas; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Data-driven models; Degradation; Inspection; Maintenance; Predictive analytics; Tamping; Track geometry; Railway infrastructure; RAMS; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : Railways are a vital and effective means of mass transportation and play a vital role in modern transportation and social development. The benefits of the railway compared to other transportation modes are a high capacity, high efficiency and low pollution, and owing to these advantages, railways are nowadays experiencing a higher demand for the transportation of passengers and goods. READ MORE

  3. 3. Electromagnetic Interference in Distributed Outdoor Electrical Systems, with an Emphasis on Lightning Interaction with Electrified Railway Network

    University dissertation from Uppsala : Institutionen för teknikvetenskaper

    Author : Nelson Theethayi; Uppsala universitet.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Electromagnetic Compatibility EMC ; Lightning; Lightning Protection; Transmission Lines; Electromagnetic Wave Propagation; Underground Cables; Grounding; Electromagnetic Transients; Electromagnetic Interference; Shielding Effectiveness; Railway Systems; Elektroteknik; elektronik och fotonik; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Abstract : This thesis deals with the electromagnetic compatibility (EMC) problems of distributed electrical networks, especially that caused by lightning to electrified railway. Lightning transients were found to damage important devices that control train movements, causing traffic stoppage and delays. READ MORE

  4. 4. Maintenance performance indicators (MPIs) for railway infrastructure identification and analysis for improvement

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Thomas Åhrén; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : With increasing awareness that maintenance not only ensures safety and track performance, but also creates additional value in the business process; many infrastructure managers and owners are treating maintenance as an integral part of the business process. This is also true for the Banverket (Swedish National Rail Administration). READ MORE

  5. 5. Aerosol Measurements as Applied for Exposure Characterization

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Andreas Dahl; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; railroad; indoor air; environment; occupational health; exposure; isocyanate; airborne particles; station; traffic;

    Abstract : It is important to decrease the burden of disease. This is in part achieved by decreasing risks. The aim of this thesis is to provide a methodology for the characterization of aerosol exposure, which may lead to negative health effects. READ MORE