.... associated with the fracture evaluations of limiting defect size and fatigue crack growth. This paper aims to provide an overview of the conservatisms Keywords: Fracture, Fatigue Crack Growth inherent in current fracture mechanics assessment methodologies and practices. This is mainly with respect to the 1...

... Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-61728 TECHNICAL BASIS FOR REVISION OF CODE CASE N-809 ON REFERENCE FATIGUE CRACK GROWTH CURVES FOR AUSTENITIC STAINLESS STEELS IN PRESSURIZED WATER REACTOR ENVIRONMENTS Russell C...

... Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-65972 A FATIGUE CRACK GROWTH MODEL FOR TYPE 304 AUSTENITIC STAINLESS STEELS IN AN ELEVATED TEMPERATURE AIR ENVIRONMENT Kathleen C. Barron Naval Nuclear Lab Pittsburgh, PA ABSTRACT C0...

... Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-65973 A FATIGUE CRACK GROWTH MODEL FOR TYPE 304 AUSTENITIC STAINLESS STEELS IN A PRESSURIZED WATER REACTOR ENVIRONMENT Kathleen C. Barron Denise J. Paraventi Naval Nuclear Lab Naval...

...THERMO-MECHANICAL FATIGUE CRACK GROWTH TESTING Jennifer Borg1, Norman Platts1, Peter Gill1, Jonathan Mann2, Chris Currie2 1 Jacobs, Warrington, Cheshire, WA3 6GA, UK 2Rolls-Royce, PO Box 2000, Derby, DE21 7XX, UK ABSTRACT Laboratory data have indicated that light water reactor environments can...

...Abstract Abstract The primary water environment in a Pressurised Water Reactor (PWR) can have a significantly detrimental effect on the Fatigue Crack Growth (FCG) rates of Austenitic Stainless Steels. Expressions to describe FCG in these materials are provided in ASME Code Case N-809, which...

...Abstract Abstract The fatigue crack growth rate studies in a structural alloy has been carried out using ASTM E-647 standard compact tension (C(T)) specimens and miniature single edge notch tension specimens (SEN(T)) at two different stress ratios of 0.1 and 0.7. Standard C(T) specimen had...

.... And the mechanical properties of X42 were tested by electrochemical hydrogen charging, slow strain rate tensile (SSRT) test and fatigue crack growth (FCG) test combined with thermal desorption spectroscopy (TDS) and SEM. Hydrogen adsorption properties of X42 pipeline steel at room temperature was measured by TDS...

...EVALUATION OF FATIGUE CRACK PROPAGATION BY J APPROACH Jia LI 1 , Olivier ANCELET, Alexandre DOUBLE, Stephane CHAPULIOT FRAMATOME Paris La Defense, France ABSTRACT An analysis of fatigue crack growth is required for large cast components to evaluate the possible defect evolution during the service...

... and drain line) that experienced cracking, the potential causes for the cracking in the absence of evidence, and the ASME Code flaw evaluations and/or repairs performed to support continued operation of the plant. Keywords: thermal fatigue, MRP-146, flaw tolerance evaluation, fatigue crack growth, non...

...EXTENSION OF WEIGHTED STRESS INTENSITY FACTOR RATE (WKR) METHOD TO CHARACTERISATION OF VARYING TEMPERATURE AND LOADING RATE IN PLANT REALISTIC WAVEFORM FATIGUE CRACK GROWTH CALCULATIONS Chris Currie Rolls-Royce PO Box 2000, Derby, DE21 7XX UK chris.currie@rolls-royce.com Jonathan Mann Rolls-Royce...

...A CRITICAL REVIEW OF RECENT FATIGUE CRACK GROWTH DATA IN RELATION TO ASME CODE CASE N-809 Jonathan Mann Rolls-Royce PO Box 2000, Derby, DE21 7XX UK jonathan.mann2@rolls-royce.com Chris Currie Rolls-Royce PO Box 2000, Derby, DE21 7XX UK chris.currie@rolls-royce.com David Tice Wood Warrington...

... 15 08 2008 A number of models are currently available for the prediction of fatigue crack growth (FCG). Among them, Zhang and Hirt model has been identified as the most promising, based on the fact that it requires knowledge of only the basic mechanical properties of the material...

... and the resulting fatigue crack growth is modeled using the FRANC3D software and its boundary element solver. The results indicate that realistic fatigue life predictions for tubes subjected to internal detonation require the consideration of the entire spectrum of strain and stress fluctuations, including...