Sökning: "Håkan Brodin"

Hittade 5 avhandlingar innehållade orden Håkan Brodin.

  1. 1. Aspects of fatigue life in thermal barrier coatings

    Författare :Håkan Brodin; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Thermal barrier coatings (TBC) are applied on hot components in airborne and land-based gas turbines when higher turbine inlet temperature, meaning better thermal efficiency, is desired. The TBC is mainly applied to protect underlying material from high temperatures, but also serves as a protection from the aggressive corrosive environment. LÄS MER

  2. 2. Failure of thermal barrier coatings under thermal and mechanical fatigue loading : microstructural observations and modelling aspects

    Författare :Håkan Brodin; Anette M. Karlsson; Linköpings universitet; []
    Nyckelord :thermal barrier coating; TBC; delamination; crack initiation; crack propagation; crack growth; oxidation; alumina; spinel; MCrAIY; diffusion; fatigue; modelling; modeling; degradation; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Industrial and air-borne gas turbine hot components suffer from creep, oxidation, corrosion and microstructural degradation if not shielded from the hot and aggressive combustion gases. Two major strategies commercially available are adopted; film cooling by pressurised air and application of protective coatings. LÄS MER

  3. 3. Regional variations in pharmaceutical consumption in Sweden

    Författare :Håkan Brodin; Linköpings universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; regional variations; health care utilization; pharmaceuticals; health economics; population-based; multiple regression analysis; lisrel analysis; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : Secondary, non-sample data, mainly from official statistics from 259 municipalities in Sweden, are used to investigate systematic variations in the consumptian of pharmaceuticals on the county and municipality level. The theoretical framework is taken from health economics. LÄS MER

  4. 4. Diagnostic and Prognostic Value of Exercise Electrocardiographic Test Variables in Coronary Artery Disease

    Författare :Håkan Kronander; Lars-Åke Brodin; Erling Löfsjögård-Nilsson; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; exercise ECG test; coronary artery disease; acute myocardial infarction; Medical engineering; Medicinsk teknik;

    Sammanfattning : The diagnostic performance of conventional analysis of the exercise electrocardiographic (ECG) test for the detection of coronary artery disease (CAD) is limited to 70-75%. The exercise ECG test is the most widely used non-invasive method for assessing CAD and even a small improvement in the diagnostic performance is important. LÄS MER

  5. 5. Cracks in superalloys

    Författare :Jonas Saarimäki; Johan Moverare; Kjell Simonsson; Magnus Hörnqvist Colliander; Robert Eriksson; Håkan Brodin; Mark Whitaker; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Gas turbines are widely used in industry for power generation and as a power source at hard to reach locations where other possibilities for electrical power supplies are insufficient. New ways of producing greener energy is needed to reduce emission levels. This can be achieved by increasing the combustion temperature of gas turbines. LÄS MER