Search for dissertations about: "Kjell Persson"

Found 4 swedish dissertations containing the words Kjell Persson.

2. 1. Integrated geophysical-geochemical methods for archaeological prospecting

   Author : Kjell Persson; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geophysics; geophysical; geochemical; prospecting; archaeology; electric; magnetometric; Geofysik; Geophysics; Geofysik;

   Abstract : A great number of field measurements with different methods and instruments were conducted in attempts to develop a method for an optimal combination of various geochemical and geophysical methods in archaeological prospecting. The research presented in this thesis focuses on a study of how different anthropogenic changes in the ground can be detected by geochemical and geophysical mapping and how the results can be presented. READ MORE

4. 2. High-Temperature Durability Prediction of Ferritic-Martensitic Steel

   Author : Ahmed Azeez; Robert Eriksson; Kjell Simonsson; Daniel Leidermark; Christer Persson; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ferritic-martensitic steel; Low cycle fatigue; Thermomechanical fatigue; Crack propagation; Fracture mechanics; Finite element modelling;

   Abstract : Materials used for high-temperature steam turbine sections are generally subjected to harsh environments with temperatures up to 625 °C. The superior creep resistance of 9–12 % Cr ferritic-martensitic steels makes them desirable for those critical steam turbine components. READ MORE

5. 3. The burden of stroke in Sweden : studies on costs and quality of life based on Riks-Stroke, the Swedish stroke register

   Author : Ola Ghatnekar; Eva-Lotta Glader; Kjell Asplund; Ulf Persson; Ingvar Karlberg; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Stroke; atrial fibrillation; cost of illness; utility; mapping; Sweden; hälso- och sjukvårdsforskning; health services research;

   Abstract : The costs for stroke management and reduced health related quality of life (QoL) can extend throughout life as mental and physical disabilities are common. The aim of this thesis was to quantify this stroke-related burden with data from Riks-Stroke (RS), the Swedish stroke register. READ MORE

6. 4. Constitutive and fatigue crack propagation behaviour of Inconel 718

   Author : David Gustafsson; Kjell Simonsson; Johan Moverare; Sjöström Sören; Sten Johansson; Christer Persson; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nickel-base superalloys constitutive modelling mean stress relaxation fatigue crack propagation hold times grain boundary embrittlement;

   Abstract : In this licentiate thesis the work done in the TURBO POWER project Influence of high temperature hold times on the fatigue life of nickel-based superalloys will be presented. The overall objective of this project is to develop and evaluate tools for designing against fatigue in gas turbine applications, with special focus on the nickel-based superalloy Inconel 718. READ MORE