Sökning: "wear prediction"
Visar resultat 11 - 15 av 55 avhandlingar innehållade orden wear prediction.
11. Machinability variations in Alloy 718 —With focus on machining of turbine components
Sammanfattning : In gas turbine engine, nickel base alloy, such as Alloy 718, accounts for almost half of the total material requirement. Nickel-base superalloys are used for gas turbine components mainly because of their outstanding strength and resistance to oxidation at high temperatures (> 550°C). LÄS MER
12. On the Design and Life Prediction of Transmission Belts Made of Elastomer Composites
Sammanfattning : Next to gear transmissions, belt transmissions are the most important mechanical transmissions. Today, belt design and development is based on extensive application tests of belts in the product development process. There is a need for theory development and design support systems. LÄS MER
13. Optimisation of Machining Operations by means of Finite Element Method and Tailored Experiments
Sammanfattning : Traditionally, costly experimental procedures have been followed in industry to optimise the machining operations to secure the maximum efficiency in production line, while the functional requirements of the machined surfaces are fulfilled. In recent years, development of robust numerical techniques such as Finite Element Method (FEM) and advances in computing capacity of computers have made it possible to simulate the machining operations under operational conditions. LÄS MER
14. Rail Corrugation Growth on Curves
Sammanfattning : The development of periodic irregularities with distinct wavelengths (corrugation) on the low rail of small radius curves is studied through mathematical modelling, numerical simulations, field measurements and laboratory investigations. One year of monitoring of roughness on the low rail of a 120 m radius curve on the metro of Stockholm Public Transport (SL) showed severe growth of rail corrugation with wavelengths of about 5 cm and 8 cm. LÄS MER
15. Numerical prediction of wear in industrial raw material flow
Sammanfattning : Abrasive wear is largely involved in many industrial processes, and has far reaching economic consequences which involve not only the costs of replacement, but also the costs involved in machine downtime and lost production. Constructions and machines like conveyers, chutes and dumper truck bodies are often exposed to abrasive wear during handling of industrial raw granular material flow e. LÄS MER