Sökning: "Friction Stir Welding"

Visar resultat 11 - 15 av 19 avhandlingar innehållade orden Friction Stir Welding.

  1. 11. Development and evaluation of hybrid joining for metals to polymers using friction stir welding

    Författare :Wallop Ratanathavorn; Arne Melander; Stefan Hallström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aluminium alloy; thermoplastic; friction stir welding; dissimilar joining; Production Engineering; Industriell produktion;

    Sammanfattning : Combinations of different materials are increasingly used in the modern engineering structures. The driving forces of this trend are rising fuel costs, global warming, customer demands and strict emission standards. LÄS MER

  3. 12. Fatigue Assessment of Friction Stir Welded Joints in Aluminium Profiles

    Författare :Meysam Mahdavi Shahri; Rolf Sandström; Per Jahn Haagensen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction stir welding; Fatigue; Aluminium alloys; Critical distance; Finite element method; Standard codes;

    Sammanfattning : Friction stir welding (FSW) is a low heat input solid state welding technology. It is often used for fabrication of aluminium alloys in transportation applications including railway, shipbuilding, bridge structures and automotive components. LÄS MER

  4. 13. Thermo-electric temperature measurements in friction stir welding : Towards feedback control of temperature

    Författare :Ana Magalhães; Gunnar Bolmsjö; Jeroen De Backer; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; FSW; Robotic; Temperature; TWT; Plunge; Control; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : Friction Stir Welding has seen a fast uptake in many industry segments. Mechanical properties superior to fusion welding, the ability to weld "unweldable" aluminium alloys and low distortion are often described as the main reasons for the fast industrial implementation of FSW. Most existing applications consist of long straight welding joints. LÄS MER

  5. 14. Fatigue strength of frictions stir welded joints in aluminium

    Författare :Mats Ericsson; KTH; []
    Nyckelord :Friction stir welding; Al-alloy 6082; Tensile properties; Fatigue performance; Microstructure; MIG; and TIG-welding; Weld speed; Weld softening;

    Sammanfattning : .... LÄS MER

  7. 15. Analysis and Design of Software-Based Optimal PID Controllers

    Författare :Olof Garpinger; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process industry; PID control; software; optimization; load disturbance attenuation; robustness; noise sensitivity; trade-off plots; modeling; friction stir welding;

    Sammanfattning : A large process industry can have somewhere between five hundred and five thousand control loops, and PID controllers are used in 90–97% of the cases. It is well-known that only 20–30% of the controllers in the process industry are tuned satisfactorily, but with the methods available today it is considered too time-consuming to optimize each single controller. LÄS MER