Sökning: "WELD"

Visar resultat 11 - 15 av 168 avhandlingar innehållade ordet WELD.

  1. 11. Weld Cracking of Precipitation Hardening Ni-based Superalloys - Investigation of repair welding characteristics and susceptibility towards strain age cracking

    Författare :Fabian Hanning; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gleeble; Haynes 282; Waspaloy; welding; ATI 718Plus®; weldability; post-weld heat treatment; weld cracking; strain age cracking; hot cracking; Nickel-based superalloys;

    Sammanfattning : High temperature resistance and strength requirements make nickel-based superalloys the material of choice for the hot section of aero engines. Fabrication in terms of combining wrought and cast parts in the manufacturing of hot structural components enables component optimisation via the use of wrought high-strength parts, where geometrical constraints allow, and cast parts to produce complex geometries. LÄS MER

  3. 12. Improved CWM platform for modelling welding procedures and their effects on structural behaviour

    Författare :Per Lindström; Lars-Erik Svensson; Lennart Josefson; Hannu Hänninen; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CWM; FEM; WELD; STRESS; EPFM; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : A welding procedure specification is the document describing how a weld joint should be constructed. Arc weld processes are characterized by transient thermal behavior, leading to rapid changes in material properties and dynamic interaction between weld and base material. LÄS MER

  4. 13. Laser welding : energy redistribution and weld geometry

    Författare :Conny Lampa; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

    Sammanfattning : Over the past few years laser welding has developed into a process which has a wide range of application over a number of industries. Industrial growth in this area has been stimulated by improvements in production rates and quality but technologically the process is still not fully understood. 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. A 2D Ray Tracing Model of Ultrasonic Wave Propagation in an Anisotropic Weld

    Författare :Qingwei Liu; Chalmers tekniska högskola; []
    Nyckelord :probe model; ray tracing; anisotropic weld; wave propagation; FEM;

    Sammanfattning : .... LÄS MER