Sökning: "creep crack growth"
Visar resultat 1 - 5 av 13 avhandlingar innehållade orden creep crack growth.
1. Crack growth in single crystal gas turbine blade alloys under service-like conditions
Sammanfattning : This work concerns the fatigue crack growth behaviour of nickel base single crystal superalloys. The main industrial application of this class of materials is in gas turbine blades, where the ability to withstand severe mechanical loading in combination with high temperatures is required. LÄS MER
2. Numerical simulation of weldment creep response
Sammanfattning : In-service inspections of high temperature pressureequipment show that weldments are prone to creep and fatiguedamage. It is not uncommon that severely damaged weldments arefound even before the design life of the component has beenreached. LÄS MER
3. Mechanical Properties of Welds at Creep Activation Temperatures
Sammanfattning : Welds in materials intended for service at temperatures above the creep activation temperature often develop damage before the base metal. The weld is a discontinuity in the material and stresses and strains often accumulate in the weld. Knowledge of the properties of the weld is essential to the safe operation of the component containing the weld. LÄS MER
4. Failure of thermal barrier coatings under thermal and mechanical fatigue loading : microstructural observations and modelling aspects
Sammanfattning : Industrial and air-borne gas turbine hot components suffer from creep, oxidation, corrosion and microstructural degradation if not shielded from the hot and aggressive combustion gases. Two major strategies commercially available are adopted; film cooling by pressurised air and application of protective coatings. LÄS MER
5. Influence of weld microstructures on creep crack growth
Sammanfattning : .... LÄS MER