Sökning: "Creep"
Visar resultat 11 - 15 av 214 avhandlingar innehållade ordet Creep.
11. Thermal Cycling, Creep- and Tensile Testing of Cast Exhaust Materials at Elevated Temperatures
Sammanfattning : An exhaust manifold of a truck engine is subjected to tough conditions. As the truck is started, operated and shut down, it becomes subjected to thermal cycling up to around 800°C. At such high temperatures, corrosion, fatigue and creep are active degradation mechanisms. LÄS MER
12. Creep Behaviour of Titanium Aluminides and its Relation to Phase Distributions and Dislocation Structures
Sammanfattning : The need for more efficient gas turbines with lowered fuel consumption and thereby lowered emission has recently lead to increased interest in low-density, .gamma.-based TiAl intermetallic alloys as a replacement of e.g. LÄS MER
13. High temperature performance of materials for future power plants
Sammanfattning : Increasing energy demand leads to two crucial problems for the whole society. One is the economic cost and the other is the pollution of the environment, especially CO2 emissions. Despite efforts to adopt renewable energy sources, fossil fuels will continue to dominate. LÄS MER
14. Development of a new generation of creep resistant 12% chromium steels: Microstructure of Z-phase strengthened steels
Sammanfattning : Fossil-fuel fired steam power plants provide more than 60% of the electricity generated worldwide, and account for about one third of the global CO2 emissions. Increasing the steam temperature and pressure leads to a higher thermal efficiency of the power plants and thus lower emissions. LÄS MER
15. Nonlinear Creep Model of Paper and Corrugated Board Materials
Sammanfattning : Models of the nonlinear creep behavior of paper, and of the global buckling , local buckling and creep buckling of corrugated board have been developed. The studies of creep and buckling were limited to climate conditions with constant relative humidity. First the short-term elastic buckling of corrugated board panels was studied. LÄS MER