Search for dissertations about: "passes"

Showing result 1 - 5 of 118 swedish dissertations containing the word passes.

  2. 1. Numerical simulation of shape rolling

    Author : Stanislav Riljak; Stefan Jonsson; Peter Gudmundson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shape rolling; wire-rod rolling; finite-element method; generalized plane-strain; dislocation density; material model; Other materials science; Övrig teknisk materialvetenskap;

    Abstract : In the first part of this thesis, the FE program MSC.Marc is applied for coupled thermomechanical simulations of wire-rod rolling. In order to predict material behaviour of an AISI 302 stainless steel at high strain rates generated during wire-rod rolling, a material model based on dislocation density is applied. READ MORE

  4. 2. Influence of multiple welding cycles on microstructure and corrosion resistance of a super duplex stainless steel

    Author : Vahid Hosseini; Leif Karlsson; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Super duplex stainless steel; autogenous TIG welding; multiple welding thermal cycles; sensitization; nitrogen loss; sigma phase; ferrite content; production technology; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Abstract : Super duplex stainless steel (SDSS) has found a wide use in demanding applications such as offshore, chemical and petrochemical industries thanks to its excellent combination of mechanical properties and corrosion resistance. Welding of SDSS, however, is associated with the risk of precipitation of secondary phases and formation of excessive amounts of ferrite in the weld metal and heat affected zone. READ MORE

  5. 3. A Model of Driver Perception and Action in Intersections

    Author : Anna Bjelkemyr; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; intersection; vehicle heading; driving; behavior; driver; perception; eye movement; anticipate;

    Abstract : The objective of the research presented in this thesis is to describe driver behavior while approaching, entering and exiting an intersection. To fulfill this objective, two semi-naturalistic studies were conducted where ten driver participants drove a test vehicle through a three-way intersection repeatedly, driving straight, turning left, and turning right in a total of six possible passes. READ MORE

  6. 4. Retargeting of an incremental code generator

    Author : Johnny Eckerland; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Incremental programming environments are becoming increasingly popular. Earlier systems are mostly based on interpretation. DICE is an incremental programming environment based on incremental compilation only. In this thesis the retargeting of the code generator from PDP-11 to DEC-20 is described. READ MORE

  7. 5. Raise boring optimization : analysis of reliability and drilling performance on raise boring in the Kiirunavaara Mine

    Author : Jenny Svanberg; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gruv- och Berganläggningsteknik; Mining and Rock Engineering;

    Abstract : For the new main level in the Kiirunavaara mine, new ventilation shafts and ore passes had to be made. The method chosen for the excavation was raise boring. This thesis describes an analysis of the raise boring performed, and gives suggestions on how to optimize the raise boring. READ MORE