Sökning: "materialvetenskap"
Visar resultat 16 - 20 av 929 avhandlingar innehållade ordet materialvetenskap.
16. Relaxation and nanomechanical studies of the vickers residual stress field in glass
Sammanfattning : The Vickers residual stress field (VRSF) in soda-lime glass results from the elastic-plastic contact event that takes place when a Vickers diamond pyramid is loaded onto the surface of the material in an indentation cycle. The importance of elastic-plastic indentation lies in the contact damage that it gives rise to in the surface of the glass. LÄS MER
17. Properties of Ugandan minerals and fireclay refractories
Sammanfattning : Development of products which can be produced from a country’s natural resources is very important as far as the industrialization of a nation and saving foreign exchange is concerned. Presently, industries in Uganda and the other states in the Lake Victoria region import all refractory-related-consumables, as the demand cannot be met locally. LÄS MER
18. Miniature Phase-Transistion Actuators
Sammanfattning : Clearly, there is a need for simple, strong actuators capable of large strokes in miniaturized systems such as valves and optical shutters.The basis for this work is the microstructure technology with processing techniques adopted from the integrated circuit industry. LÄS MER
19. Calcium Aluminate based Cement as Dental Restorative Materials
Sammanfattning : This thesis presents the results from the development process of a ceramic dental filling material based on calcium aluminate cement. The main focus of the work concerns dimensional changes during setting, hardening and curing and the understanding of the factors controlling the dimensional stability of the system. LÄS MER
20. Friction stir welding of copper canisters for nuclear waste
Sammanfattning : The Swedish model for final disposal of nuclear fuel waste is based on copper canisters as a corrosion barrier with an inner pressure holding insert of cast iron. One of the methods to seal the copper canister is to use the Friction Stir Welding (FSW), a method invented by The Welding Institute (TWI). LÄS MER