Search for dissertations about: "track maintenance"

Showing result 1 - 5 of 83 swedish dissertations containing the words track maintenance.

2. 1. Railway Track Stiffness : Dynamic Measurements and Evaluation for Efficient Maintenance

   Author : Eric Berggren; Mats Berg; Laurent Schmitt; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway track stiffness; maintenance; soil dynamics; measurement; simulation; vibration; Vehicle engineering; Farkostteknik;

   Abstract : Railway track stiffness (vertical track load divided by track deflection) is a basic parameter oftrack design which influences the bearing capacity, the dynamic behaviour of passing vehiclesand, in particular, track geometry quality and the life of track components. Track stiffness is abroad topic and in this thesis some aspects are treated comprehensively. READ MORE

4. 2. Dynamic track stiffness measurement : a new tool for condition monitoring of track substructure

   Author : Eric Berggren; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technology; track stiffness; track maintenance; soil dynamics; measurement; Vehicle engineering; Farkostteknik;

   Abstract : .... READ MORE

5. 3. Data-driven models for railway track geometry maintenance

   Author : Hamid Khajehei; Alireza Ahmadi; John Andrews; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Data-driven models; degradation; maintenance; tamping; track geometry; planning and scheduling; railway infrastructure; Drift och underhållsteknik; Operation and Maintenance;

   Abstract : Railways are currently experiencing higher demands on safety, infrastructure performance, network capacity and service quality, etc. As a result, a high level of track availability, service quality and infrastructure robustness against unexpected events is required, at reduced cost, to meet the demands. READ MORE

6. 4. Maintenance related losses : a study at the Swedish National Rail Administration

   Author : Mattias Holmgren; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kvalitetsteknik; Quality Technology and Management; Drift och underhållsteknik; Operation and Maintenance;

   Abstract : 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

7. 5. Optimization of track geometry maintenance : a study of track geometry degradation to specify optimal inspection intervals

   Author : Iman Arasteh khouy; Per-Olof Larsson-Kråik; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

   Abstract : Railway infrastructure is a complex system which comprises different subsystems. Long useful life span is one of the important aspects of this prime mode of transport. The useful life length of its assets is highly dependent on the maintenance and renewal strategy used during its life cycle. READ MORE