Sökning: "Maskinelement"
Visar resultat 16 - 20 av 169 avhandlingar innehållade ordet Maskinelement.
16. Effect of light power density variation on dental light-cure resin composites
Sammanfattning : Dental resin based composites are tooth-colored filling materials composed of synthetic resins and particulate ceramic reinforcing filler particles. The resin system also contains molecules that promote and/or modify the polymerisation reaction of the dimethacrylate resin monomers. LÄS MER
17. Variables affecting stress development and resin conversion in light-cured dental composites
Sammanfattning : The general aim of this dissertation was to identify and investigate factors that can be used to minimize stress development in light cured dental resins without compromising the conversion level of the polymer. Modulus of elasticity, polymerization contraction strain, degree of conversion and shrinkage of light-cure dental composites were determined after curing with three different light power densities where total irradiated energy (J/cm2) kept constant. LÄS MER
18. Carbon nanofiller reinforced UHMWPE for orthopaedic applications : optimization of manufacturing parameters
Sammanfattning : Polymer composites research designed for orthopaedic applications are commonly focused on Ultra high molecular weight polyethylene (UHMWPE) reinforced by a variety of different nanoparticles. However, the high melt viscosity of UHMWPE renders conventional melt mixing techniques impossible for composite manufacturing. LÄS MER
19. Impact of water contamination and system design on wet clutch tribological performance
Sammanfattning : Wet clutches are lubricated machine components which utilize friction to transfer torque and thus establish connection between shafts rotating at different speeds. They are used in automatic transmission as shifting device or lockup clutch. LÄS MER
20. Wet clutch friction reliability : influence of water contamination and system design
Sammanfattning : Wet clutches are machine components using friction to transfer torque and providing interruptible connection between rotating shafts in different automobile applications including automatic transmissions. Like any friction generating machine components, wet clutches are susceptible to continuous wear and degradation during sliding. LÄS MER