Search for dissertations about: "Arc Welding"

Showing result 16 - 20 of 44 swedish dissertations containing the words Arc Welding.

  2. 16. Automatic Quality Monitoring in GMA Welding using Signal Processing Methods

    Author : Stefan Adolfsson; Industriell Produktion; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material technology; F; Signal Processing; Automatic Quality Monitoring; GMA welding; Materiallära; materialteknik;

    Abstract : An ongoing continuous process of automatization of the production lines is used in industry to reduce production costs. Automatization of quality control should be seen as part of a cost reduction process, as well as of quality control of the welding. READ MORE

  4. 17. Microstructure and mechanical properties of Ti-6Al-4V welds produced with different processes

    Author : Sakari Tolvanen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatigue; welding; porosity; microstructure; defects; Ti-6Al-4V;

    Abstract : Titanium alloys are widely used for components in the fan and compressor sections of aeroengines mainly because of their superior strength-to-weight ratio. Large static compressor components can be manufactured by welding together smaller subcomponents, which has potential to provide benefits such as higher buy-to-fly ratio and improved performance of the components. READ MORE

  5. 18. Development of intelligent robot systems based on sensor control

    Author : Mikael Fridenfalk; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Envision; kinematics singularities.; Automation; robotics; control engineering; Automatiska system; robotteknik; reglerteknik; Igrip; Matlab; 6D; 3D; laser scanning; arc sensing; seam tracking; robotic welding; Asimov; ROWER-2; FUSE; virtual prototyping; rapid prototyping; software development; simulation; virtual sensor; Robot; sensor control;

    Abstract : Sensor based control systems increase flexibility and autonomy in robotics. One of the most common applications in robotics is welding, which is often limited to objects with fine tolerances. READ MORE

  6. 19. Cold lap formation in Gas Metal Arc Welding of steel : An experimental study of micro-lack of fusion defects

    Author : Peigang Li; Lars-Erik Svensson; Norbert Enzinger; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tandem GMAW; old laps; lack of fusion; Spatter; Overlap; Overflow; Manganese; Silicon; Oxides; Temperature; Manufacturing and materials engineering; Produktions- och materialteknik;

    Abstract : Cold laps are defined as micro-lack of fusion defects at the weld toe more or less parallel to the surface of the parent plate. These defects are known to negatively influence the fatigue properties of weldments. Previous studies suggest that cold lap formation can not be avoided completely in Gas Metal Arc Welding (GMAW). READ MORE

  7. 20. Residual Stress Analysis and Fatigue of Welded Structures

    Author : Zuheir Barsoum; Jack Samuelsson; Jan Langkjear Hansen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; welding; fatigue; finite element analysis; fracture mechanics; residual stresses; Engineering mechanics; Teknisk mekanik;

    Abstract : This licentiate thesis is generally concerned with the fatigue of welded structures. Several topics related to fatigue of welded structures are treated such as; weld defects and their influence on fatigue performance of welded structures, fatigue life prediction using LEFM (Linear Elastic Fracture Mechanics), fatigue testing, welding simulation, residual stress prediction and measurement and their influence on fatigue. READ MORE