Search for dissertations about: "Pore Defects"

Showing result 1 - 5 of 19 swedish dissertations containing the words Pore Defects.

  1. 1. Detection and 3-D positioning of small defects using digital radiography, 3-D point reconstruction, and tracking

    Author : Erik Lindgren; Chalmers University of Technology; []
    Keywords : Pore Defects; Radiographic Testing; Nondestructive Evaluation; Laser Welded Titanium; Multiple Hypothesis Tracking; X-ray Testing;

    Abstract : The weight and quality concerned aero industry is constantly trying to decrease the excess material in their components. With decreased weight the fuel consumption can be lowered and the negative environmental effects from aviation decreased. READ MORE

  2. 2. Structural study of nano-structured materials: electron crystallography approaches

    Author : Yanhang Ma; Peter Oleynikov; Osamu Terasaki; Reine Wallenberg; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; structural analysis; electron crystallography; 3D EDT; HRTEM imaging; defects; oorganisk kemi; Inorganic Chemistry;

    Abstract : The structural analysis serves as a bridge to link the structure of materials to their properties. Revealing the structure details allows a better understanding on the growth mechanisms and properties of materials, and a further designed synthesis of functional materials. READ MORE

  3. 3. Laser welding and cladding : the effects of defects on fatigue behaviour

    Author : Md. Minhaj Alam; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing Systems Engineering; Produktionsutveckling;

    Abstract : The thesis focuses on weld defects in laser processed materials (for laser welding, laser hybrid arc welding and laser cladding) and their effect on the fatigue life of components. Component properties were studied with particular emphasis on the macro and micro surface geometry, weld defects and clad defects. READ MORE

  4. 4. Modelling of Radiographic Testing to Derive a Detection Positioning and Sizing Algorithm for Pore Defects

    Author : Erik Lindgren; Chalmers University of Technology; []
    Keywords : ;

    Abstract : When laser welding light weight materials, e.g. aluminium and titanium based alloys, small sub-millimeter pore defects occasionally forms. Due to their small sizes, less than some 0. READ MORE

  5. 5. Functional studies of nuclear envelope-associated proteins in Saccharomyces cerevisiae

    Author : Ida Olsson; Ann Mutvei; Valérie Doye; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Nucleus; nuclear envelope; nuclear pore complexes; vesicular traffic; arginine methylation; Rmt2; Cwh43; Myr1; Biochemistry; Biokemi; biokemi; Biochemistry;

    Abstract : Proteins of the nuclear envelope play important roles in a variety of cellular processes e.g. transport of proteins between the nucleus and cytoplasm, co-ordination of nuclear and cytoplasmic events, anchoring of chromatin to the nuclear periphery and regulation of transcription. READ MORE