Applications of crack growth models in life prediction of elevated temperature components
Conference
·
OSTI ID:79828
- Georgia Inst. of Tech., Atlanta, GA (United States). School of Materials Science and Engineering
Creep and creep-fatigue crack growth behavior dominates the design life or remaining life of several thick-section power plant components such as turbine rotors, casings, reheat and main steam piping and headers. In this paper, the state-of-the-art procedures for predicting the crack growth life of these components are described. These procedures are based extensively on the recently developed time-dependent fracture mechanics concepts. Thus, the first part of the paper describes these concepts. The second part of the paper gives illustrative examples of these methods by considering specific components and estimating their remaining crack growth life. The paper also includes relevant crack growth rate data and creep deformation behavior on several materials used in power plant applications necessary for these design or remaining crack growth life calculations. 50 refs.
- OSTI ID:
- 79828
- Report Number(s):
- CONF-950414--
- Country of Publication:
- United States
- Language:
- English
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