Search for dissertations about: "point defects"
Showing result 11 - 15 of 156 swedish dissertations containing the words point defects.
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11. Point defect interactions and structural stability of compounds
Abstract : Theoretical studies of point defect interactions and structural stability of compounds have been performed using density functional theory. The defect-related properties, such as activation energy of diffusion, electronic and magnetic structure of selected materials have been studied. READ MORE
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12. Point defects and ion conduction in solid oxides: a first-principles case study of La2Zr2O7
Abstract : In the endeavor to attain a clean environment and sustainable energy consumption, the notion of a future hydrogen economy stands out as one of the grandest visions. Striving for this vision, a critical task lies in optimizing the performance of the fuel-cell devices responsible for extracting electric power from the energy stored in hydrogen molecules. READ MORE
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13. Detection and 3-D positioning of small defects using digital radiography, 3-D point reconstruction, and tracking
Abstract : The weight and quality concerned aero industry is constantly trying to decrease the excess material in their components. With decreased weight the fuel consumption can be lowered and the negative environmental effects from aviation decreased. READ MORE
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14. Multiscale modeling of atomic transport phenomena in ferritic steels
Abstract : Defect-driven transport of impurities plays a key role in the microstructure evolution of alloys, and has a great impact on the mechanical properties at the macroscopic scale. This phenomenon is greatly enhanced in irradiated materials because of the large amount of radiation-induced crystal defects (vacancies and interstitials). READ MORE
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15. Module property verification : A method to plan and perform quality verifications in modular architectures
Abstract : Modular product architectures have generated numerous benefits for companies in terms of cost, lead-time and quality. The defined interfaces and the module’s properties decrease the effort to develop new product variants, and provide an opportunity to perform parallel tasks in design, manufacturing and assembly. READ MORE