Search for dissertations about: "Plunge"

Showing result 1 - 5 of 10 swedish dissertations containing the word Plunge.

  2. 1. Thermo-electric temperature measurements in friction stir welding : Towards feedback control of temperature

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

    Abstract : 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. READ MORE

  4. 2. Organization of Nanoparticles in Solution-A TEM Study

    Author : Olivier Balmes; Lunds universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Materiallära; materialteknik; Material technology; organisation; plunge freezing; TEM; nanoparticle; transmission electron microscopy;

    Abstract : A new approach to the study of nanoparticle systems has been introduced. Nanoparticle systems in aqueous and organic solutions have been synthesized and studied by transmission electron microscopy. These systems include nanoparticles of gold, silver, palladium, ruthenium, and platinum which have been stabilized using various ligands. READ MORE

  5. 3. Saturn's dusty equatorial ionosphere from Cassini's Grand Finale observations

    Author : Joshua Dreyer; Erik Vigren; Lorenz Roth; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Saturn; Cassini; ionosphere; space plasma; planetary science; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Abstract : The Cassini mission provided unprecedented insights into the Kronian system and revealed many unexpected phenomena relating to dusty plasma environments around Saturn and its rings. Almost 13 years after its arrival, Cassini began a series of 22 orbits which brought it between Saturn's upper atmosphere and the innermost D ring, culminating in a final plunge into Saturn's ionosphere. READ MORE

  6. 4. Characterization of iron ore green pellets by scanning electron microscopy and X-ray microtomography

    Author : Iftekhar Uddin Bhuiyan; Charlotte Andersson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Abstract : Cryogenic scanning electron microscopy (cryo-SEM), image analysis (IA) of SEM micrographs and X-ray microtomography (XMT) were used to obtain new information about the morphology of iron ore green pellets in this work. Cryo-SEM and freeze fracturing was used to observe entrapped air bubbles and arrangement of particles around the bubbles and in the matrix of wet green pellets. READ MORE

  7. 5. Development of Multi-grit cBN Grinding Wheel for Crankshaft Grinding

    Author : Nastja Macerol; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; automotive; cBN; grinding; vitrified bond; grit shape; grit concentration; morphology; aspect ratio; crankshaft; grinding wheels;

    Abstract : Crankshaft is a geometrically challenging component to grind. Over the years a number of grinding strategies have been developed to overcome thermal damage issues and excessive wheel wear. Radial and angular plunge processes have been adopted on some of the production machines. Recently a new, temperature-based strategy, has been proposed. READ MORE