Sökning: "ytskikt"
Visar resultat 1 - 5 av 33 avhandlingar innehållade ordet ytskikt.
1. Polyethylene – metal oxide particle nanocomposites for future HVDC cable insulation : From interface tailoring to designed performance
Sammanfattning : Low-density polyethylene (LDPE) nanocomposites containing metal oxide nanoparticles are considered as promising candidates for insulating materials in future high-voltage direct-current (HVDC) cables. The significant improvement in dielectric properties compared with unfilled polymer is attributed to the large and active interface between the nanoparticles and the polymer. LÄS MER
2. Experimental investigation of snow metamorphism at near-surface layers
Sammanfattning : Snow metamorphism is a direct objective in many snow research areas, and its charac-terisation is a major challenge in areas including winter road maintenance, detection of icing on wind turbine blades, and snow quality mapping for skiing. A common effect of snow metamorphism is compaction, which can be investigated from the associated vari-ations in physical properties of snow. LÄS MER
3. Coupled processes in seasonally frozen soils : Merging experiments and simulations
Sammanfattning : Soil freezing/thawing is of importance in the transport of water, heat and solute, with coupled effects. Due to complexity in soil freezing/thawing, uncertainty could be influential in both experimentation and simulation work in frozen soils. LÄS MER
4. Detection of glue deficiency beneath a thin layer of laminated wood using thermography
Sammanfattning : Denna avhandling presenteras i form av en monografi bestående av en teoridel och en experimentell del. Syftet med teoridelen är att ge en samlad bild av hur de termiska fenomen som förekommer inom termografi teoretiskt kan beskrivas samt hur olika faktorer påverkar resultaten vid en termografisk mätning. LÄS MER
5. High Clay Content Cellulose Nanocomposites for Mechanical Performance and Fire Retardancy
Sammanfattning : Materials based on wood can offer sustainable alternatives to fossil-based plastics and composites, and show interesting mechanical properties. However, the issue of their flammability is generally unresolved. In this thesis, eco-friendly, fire retardant clay-cellulose nanofibril materials are investigated. LÄS MER