Search for dissertations about: "rail"

Showing result 21 - 25 of 275 swedish dissertations containing the word rail.

  2. 21. Computational modelling of rail manufacturing

    Author : Torbjörn Lindbäck; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer Aided Design; Datorstödd maskinkonstruktion;

    Abstract : The thesis deals with simulation of rail manufacturing. During the manufacturing process residual stresses arise in the rail, primarily due to cooling and straightening. These stresses can affect product performance, for example fatigue characteristics. Therefore it would be desirable to be able to predict these in an efficient way. READ MORE

  4. 22. Degradation of railway rails from a materials point of view

    Author : Martin Schilke; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Anisotropy; White etching layer; Rail grade; Rolling contact fatigue; Three dimensions; Plastically deformed layer; Railway Rail; Crack;

    Abstract : From time to time railway rails need to be replaced. In that case and when new track is built, a decision has to be made about which rail grade that is going to be installed. The intention of this work was to compare different rail steels concerning their suitability from a mechanical durability perspective. READ MORE

  5. 23. Collaborative Tracking and Tracing – A Supply Chain Perspective

    Author : Vahid Mirza Beiki; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; logistics; wagon; rail; design.; supply chain; entities; collaborative; food; tracking and tracing T T ; actors;

    Abstract : The purpose of this thesis is to explore tracking and tracing (T&T) systems to develop the concept of “collaborative tracking and tracing” for the management of logistics operations.The thesis is based on extensive literature reviews, and four major empirical studies, including one structured interview study, one documentation review study, case studies of two Swedish fresh-fish supply chains (SCs) and a case study of the Volvo cars body components (VCBC) SC. READ MORE

  6. 24. Analysis of traffic load effects an railway bridges

    Author : Gerard James; KTH; []
    Keywords : bridge; rail; traffic load. Load effect. Dynamic amplification factor; extreme value theor; peaks-over-threshold;

    Abstract : The work presented in this thesis studies the load and loadeffects of traffic loads on railway bridges. The increasedknowledge of the traffic loads, simulated using fieldmeasurements of actual trains, are employed in a reliabilityanalysis in an attempt at upgrading existing railwaybridges. READ MORE

  7. 25. Activity-based rail freight costing : a model for calculating transport costs in different production systems

    Author : Gerhard Troche; Bo-Lennart Nelldal; Christopher P.L. Barkan; KTH; []
    Keywords : ;

    Abstract : .... READ MORE