Sökning: "material production"

Visar resultat 41 - 45 av 2115 avhandlingar innehållade orden material production.

  1. 41. IronArc a New Process for Pig Iron Production : A Numerical and Experimental Investigation Focusing on Mixing

    Författare :Kristofer Bölke; Mikael Ersson; Pär Jönsson; Stein Tore Johanssen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mixing time; Penetration depth; CFD simulations; IronArc; Water modeling; Mixing time Experiments; Omrörningstid; Penetrationsdjup; CFD simuleringar; IronArc; Vattenmodellering; Omrörningsexperiment; Metallurgical process science; Metallurgisk processvetenskap;

    Sammanfattning : I den här studien så var syftet att undersöka omrörningen och relaterade fenomen i den nyutvecklade IronArc processen. Processen använder sig av gasinjektion genom plasmageneratorer för att smälta och reducera en slagg bestående av järnoxid. LÄS MER

  3. 42. Automation of Input Data Management - Increasing Efficiency in Simulation of Production Flows

    Författare :Anders Skoogh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Discrete Event Simulation; Input data management; Sustainable Production;

    Sammanfattning : Production is of significant importance for the social welfare and economic growth in societies worldwide. In Europe, more than 30% of all job opportunities are related to the manufacturing industry. LÄS MER

  4. 43. The Common Thread, Textile Production during the Late Iron Age and Viking Age

    Författare :Eva Andersson; Arkeologi; []
    Nyckelord :HUMANIORA; HUMANITIES; Haithabu; Birka; Scania; Viking Age; Late Iron Age; household production; textile valuables; sail cloth; bone needle; loom weight; textile production; spindle whorl; Archaeology; Arkeologi;

    Sammanfattning : The initial aim of the present PhD thesis was to develop the method of classification for textile tools to facilitate the study of textile production in an archaeological context. The thesis consists of five separate projects and a concluding summary. The study covers the late Iron Age, mainly the Viking Period. LÄS MER

  5. 44. Closed-die forging and slab hot rolling with focus on material yield : some industrial problems analysed by FEM

    Författare :Esa Ervasti; Ulf Ståhlberg; Hans Keife; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material yield; Closed-die forging; Hot rolling; Cracks; Macro-inclusions; Steel; FEM; Industrial engineering and economy; Industriell teknik och ekonomi;

    Sammanfattning : The thesis is focussed on improving the material yield in closed-die forging and rolling. The former is restricted to the manufacturing of heavy crown wheels and front axle beams and the latter to the hot rolling of steel slabs. To enhance the yield the commercial FE-codes Form2D and Dyna3D are used. LÄS MER

  7. 45. Caleacte : Production and Exchange in a North Sicilian Town c. 500 BC-500 AD

    Författare :Adam Lindhagen; Antikens kultur och samhällsliv; []
    Nyckelord :HUMANIORA; HUMANITIES; Arkeologi; Archaeology; Antikens och forntidens historia; Ancient history; Roman; Hellenistic; pottery; amphorae; exchange; Caleacte; production; Petrology; mineralogy; geochemistry; Petrologi; mineralogi; geokemi;

    Sammanfattning : The study deals with the ancient town of Caleacte, modern Caronia, on the north coast of Sicily. Information provided by ancient textual sources, epigraphy and archaeology on the economic conditions and framework of the site and its micro-region are presented in the first chapter. LÄS MER