Search for dissertations about: "Manufacturing engineering"

Showing result 1 - 5 of 1504 swedish dissertations containing the words Manufacturing engineering.

  1. 1. Coated Ferritic Stainless Steels as Interconnects in Solid Oxide Fuel Cells - Material Development and Electrical Properties

    University dissertation from Chalmers University of Technology

    Author : Jan Gustav Grolig; Chalmers tekniska högskola.; Chalmers University of Technology.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SOFC; ASR; Interconnects; High Temperature Corrosion;

    Abstract : Solid oxide fuel cells (SOFCs) are attracting increasing interest as devices with potential uses in decentralized and clean electricity and heat production. Several challenges with respect to materials have to be overcome to achieve efficiencies and life-spans that are sufficient for long-term applications. READ MORE

  2. 2. Detection of Partial Discharges at Fast Rising Voltages

    University dissertation from Chalmers University of Technology

    Author : Thomas Hammarström; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektronik; Electronics; Elektronisk mät- och apparatteknik; Electronic measurement and instrumentation; Elkraftteknik; Electric power engineering; Konstruktionsmaterial; Construction materials; Partial discharges; square like voltages; measurements; cavities; repetitive voltages; short rise time; high dV dt.;

    Abstract : The present demand for higher efficiency and flexibility in the energy sector has led to an increased use of power electronic generated waveforms as these allow energy conversion between different frequencies including DC. The generated waveforms are usually synthesized by so called Pulse Width Modulation (PWM) techniques, where the desired waveform is approximated by a number of square shaped pulses with a short rise time. READ MORE

  3. 3. Heat Transfer and Hydrodynamics in Falling Film Evaporation of Black Liquor

    University dissertation from Chalmers University of Technology

    Author : Miriam Johansson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik; Chemical engineering; Kemisk process- och produktionsteknik; Chemical process and manufacturing engineering; Kemisk apparatteknik; Chemical process equipment; Kemisk energiteknik; Chemical energy engineering; Kemisk produktionsteknik; Chemical manufacturing engineering; Heat transfer; black liquor; evaporation; evaporator; falling film; experimental; correlation; hydrodynamics; turbulence; kraft pulp mill;

    Abstract : The evaporation plant is one of the major steam consumers in kraft pulp mills, which are the dominant type of chemical pulp mill in Sweden. Previous studies have shown potential to decrease the live steam demand for the pulp process, e.g. READ MORE

  4. 4. A Unified Framework for Mixed Continuous/Discrete-time H_inf-Control

    University dissertation from Chalmers University of Technology

    Author : Anna-Karin Christiansson; Högskolan Väst.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik; Manufacturing and materials engineering; Produktions- och materialteknik; H_inf-control; output feedback; Riccati equation; mixed continuous discrete-time systems; sampled-data; lifting; reduced controller order; loop-shaping; weight functions; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Teknisk mekanik; Engineering mechanics;

    Abstract : This thesis presents a unified and general state-space framework for mixed continuous/discrete-time H_inf-controller design. H_inf-design considers robust and optimal control of multivariable systems. READ MORE

  5. 5. Robotic Friction Stir Welding for Flexible Production

    University dissertation from Lund : Lund University

    Author : Jeroen De Backer; Högskolan Väst.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell arbetsvetenskap; Industrial engineering; Mechatronics; Mekatronik; Friction Stir Welding; Automation; Robotics; Aluminium; Lightweight design;

    Abstract : Friction Stir Welding eller ”friktionsomrörningssvetsning” är en svetsprocess som kräver ett roterande verktyg som genom friktionsvärme får materialet att mjukna. Verktyget blandar runt det plastiska materialet mekaniskt och skapar en fog av hög kvalité. READ MORE