Search for dissertations about: "Torbjörn Carlberg"

Showing result 1 - 5 of 12 swedish dissertations containing the words Torbjörn Carlberg.

  2. 1. Mathematical and Experimental Study on Filtration of Solid Inclusions from Molten Aluminium and Steel

    Author : Shahin Akbarnejad; Pär Jönsson; Dong-Yuan Sheng; Björn Glaser; Torbjörn Carlberg; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Filtration; Porous Media; Permeability; Water modeling; Fluid Bypassing; Stacked Filters; Ceramic Foam Filter; Monolithic Ceramic Filter; Alumina CFF; Particle Tracing; Aluminum Filtration; Steel Filtration; CFD; Alumina Inclusion; Filtrering; porösa medier; permeabilitet; vattenmodellering; vätskebypass; staplade filter; keramiskt skumfilter; monolitiskt keramiskt filter; aluminiumoxid CFF; partikelspårning; aluminiumfiltrering; stålfiltrering; CFD; aluminiumoxidinkludering; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : Aluminum and steel have been the most produced metal and alloy, respectively, for many years. Their extensive use in various industries, their fundamental role in our everyday life, and their excellent recycling characteristics are the major driving forces for development of their production towards more sustainable processes. READ MORE

  4. 2. Investigation of Surface Formation in As-Cast and Homogenized 6xxx Aluminium Billets

    Author : Nazlin Bayat; Torbjörn Carlberg; Håkan Olin; Yanjun Li; Mittuniversitetet; []
    Keywords : DC casting; surface segregation; surface defects; intermetallic phase; phase transformation; homogenization;

    Abstract : The direct chill (DC) casting technique to produce billets for extrusion and ingots for rollingwas developed in the 1930s. The principle, which is still valid, is a two-stage cooling with a primary cooling at a mould surface followed by water spraying directly on the surface. READ MORE

  5. 3. Understanding surface defects on direct chill cast 6xxx aluminium billets

    Author : Mikael Erdegren; Torbjörn Carlberg; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aluminium; billets; DC casting; segregation; surface defects; vertical drags; Bridgman furnace; dewetting; non-wettable; nanocomp; Metcast ST20; graphite ring; titanium-butoxide;

    Abstract : .... READ MORE

  6. 4. Fracture processes in wood chipping

    Author : Lisbeth Hellström; Per Gradin; Torbjörn Carlberg; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood chipping; chip formation; digital speckle photography; friction; fracture processes; analytical model; Engineering mechanics; Teknisk mekanik;

    Abstract : In both the chemical and mechanical pulping process, the logs are cut into wood chips by a disc chipper before fibre separation. To make the wood chipping process more efficient, one have to investigate in detail the coupling between theprocess parameters and the quality of the chips. READ MORE

  7. 5. On the wood chipping process : a study on basic mechanisms in order to optimize chip properties for pulping

    Author : Lisbeth Hellström; Torbjörn Carlberg; Per Engstrand; Sören Östlund; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood chipping; Chip formation; Digital Speckle Photography; Friction; Fracture Processes; Analytical model; Laboratory Wood Chipper; Force Measurement; Vibration Synthesis; Energy Efficiency; Chip Damage; TMP; CTMP; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Abstract : In both the chemical and mechanical pulping process, the logs are cut into wood chips by a disc chipper before fibre separation. To make the wood chipping process more efficient, one have to investigate in detail the coupling between process parameters and the quality of the chips. READ MORE