Sökning: "Gunnar Härkegård"
Hittade 3 avhandlingar innehållade orden Gunnar Härkegård.
1. Aspects of creep-fatigue in gas turbine hot parts
Sammanfattning : The goal is reliable creep-fatigue lifing methodology for industrial gas turbines.A literature study on high temperature materials used in gas turbines reveals that:• Most testing/modelling work has focused on characterisation and modelling of material response in isothermal standard tests, i.e. creep, tensile and LCF tests. LÄS MER
2. Fatigue crack growth experiments and analyses - from small scale to large scale yielding at constant and variable amplitude loading
Sammanfattning : This thesis is on fatigue crack growth experiments and assessments of fatigue crack growth rates. Both constant and variable amplitude loads in two different materials are considered; a nickel based super-alloy Inconel 718 and a stainless steel 316L. LÄS MER
3. Experiments, Computations and Models for Probabilistic HCF Design
Sammanfattning : High Cycle Fatigue (HCF) failure is a common failure type for many mechanical components. Traditional HCF design is based on the deterministic safety factor approach, typically used in conjunction with the point stress method. LÄS MER