Sökning: "S-N curve"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden S-N curve.

  1. 1. Random Fatigue Analysis of Container Ship Structures

    Författare :Wengang Mao; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RAOs; rainflow counting; narrow band approximation; zero up-crossing response frequency; significant wave height; ship structure response; S-N curve; spatio-temporal model; safety index.; zero up-crossing response frequency;

    Sammanfattning : .... LÄS MER

  3. 2. Development and application of an LC-MS method for the alcohol biomarker phosphatidylethanol (PEth) in blood

    Författare :Yufang Zheng; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Objective biomarkers tracing alcohol consumption are demanded in many situations when alcohol drinking is in focus, e.g. during monitoring of patient in a treatment program, in forensic medicine, workplace testing or biochemical validation of self-report in research. LÄS MER

  4. 3. Fatigue limit, inclusion and finite lives - a statistical point of view

    Författare :Sara Lorén; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; censoring; likelihood; profile predictive likelihood; staircase test; extreme value; likelihood;

    Sammanfattning : An important design property of steel is the fatigue limit, i.e. the load level where a specimen has infinite life. For the material it can also be defined an endurance limit, which is the stress level at which the specimen has a certain life. LÄS MER

  5. 4. Fatigue life extension in existing steel bridges. High-Frequency Mechanical Impact treatment and Tungsten Inert Gas remelting in life extension and fatigue crack repair of welded steel structures

    Författare :Hassan al-Karawi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HFMI; TIG-dressing; Life extension; Post weld treatment; Gain factor; Linear elastic fracture mechanics; Crack retrofiting; Peening; fatigue crack; Crack detection; Microhardness; Concentration factor; LEFM; TIG-remelting; Strain gauge;

    Sammanfattning : This thesis investigates the performance of improved welds with two post-weld treatment methods for application on existing structures. High-Frequency Mechanical Impact (HFMI) treatment and Tungsten Inert Gas (TIG) remelting were used for fatigue life extension of welded structures. LÄS MER

  7. 5. Enantioselective drug metabolism catalysed by the polymorphic CYP2D6 and CYP2C19 : a methodological investigation focused on mianserin, mephenytoin and omeprazole

    Författare :Gunnel Tybring; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Drug metabolism; CYP2D6; CYP2CI9; mianserin; mephenytoin; omeprazole; enantiomers; chiral analysis;

    Sammanfattning : The aim of this thesis was to develop enantioselective analytical methods and apply them to studies of oxidative metabolism of chiral drugs catalysed by the polymorphic cytochrome P450 CYP2D6 and CYP2C 19 enzymes. The work has been focused on mianserin, mephenytoin and omeprazole. LÄS MER