Search for dissertations about: "Mats Sjöberg"

Showing result 1 - 5 of 12 swedish dissertations containing the words Mats Sjöberg.

  1. 1. Active insulation : possibilities of utilizing free charges in air

    Author : Mats Sjöberg; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capacitively coupled discharge; charge accumulation; breakdown mechanism; dielectric covered structures; electric field homogenization; active insulation; dynamic charging; microdischarge; dielectric barrier discharge; dielectric breakdown strength; electric field reduction; space charge; air gaps; surface charge;

    Abstract : .... READ MORE

  2. 2. Att säkra framtidens skördar : Barndom, skola och arbete i agrar miljö

    Author : Mats Sjöberg; Linköpings universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; History of Childhood; History of Education; Rural Child Labour; Family Strategies; Compulsory Schooling; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : This study deals with the interpretation and explanation of organized resistance to prolonged compulsory schooling in agrarian settings in Sweden at the end of the nineteenth and the beginning of the twentieth century. The area of investigation is the four parishes of Bolstad in Western Sweden. READ MORE

  3. 3. Charge Accumulation in Hybrid High Voltage Insulation

    Author : Mats Sjöberg; Chalmers University of Technology; []
    Keywords : dielectric barrier; charge accumulation; high voltage; dielectric barrier discharge; dielectric coating; hybrid insulation; electric field distribution; discharge modelling; breakdown strength; charge conditioning;

    Abstract : This thesis deals with the novel idea of controlling the electric stress or field distribution in a hybrid air - solid-dielectric high voltage insulation by promoting accumulation of surface charges on the internal interfacial layers in the combined (hybrid) dielectric structure. Primarily, applications are expected to be found in high voltage dc systems and as a method to improve the resistance against insulation failure by overvoltages, e. READ MORE

  4. 4. Handling of high power laser radiation

    Author : Mats Sjöberg; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fiber delivery system; laser material processing; power transmission; SBS; Stimulated Brillouin Scattering; optical breakdown; multi mode fiber; laser induced plasma; optical fuse; Nd:YAG;

    Abstract : .... READ MORE

  5. 5. Method Development for Characterisation of Superalloy used in Containment Design

    Author : Ted Sjöberg; Mats Oldenburg; Jörgen Kajberg; Odd Geir Lademo; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : Due to the trend of increasing environmental demands put on civil aviation, manufacturersof commercial aircraft engines meet increased pressure to reduce weight. Modernturbofan engines represent up to almost one tenth of an aircraft's total weight, meaning areduction of engine component weight of just 30 kg is estimated to reduce CO2 emissionsby 400 tonnes over the lifetime of a medium sized commercial aircraft. READ MORE