... Abstract Anomalous and inconsistent results were observed while performing fatigue crack growth tests in hydrogen gas on 4130X Cr-Mo steel when the stress-intensity factor range (ΔK) was less than 10 MPa m 1/2 . Two particular abnormal characteristics were noted: i) sequential measurements...

... Abstract Fatigue Crack Growth Rates (FCGRs) of austenitic stainless steels can be significantly enhanced when tested in a high temperature water environment compared to those tested in air. Existing FCGR models are based on simple isothermal waveform loading. Recent work has highlighted...

... solution for computing inside temperatures at multiple different thermal zones is nontrivial. Drawing on previous work, this paper discusses the challenge along with a proposed solution. inverse conduction thermal fatigue fatigue monitoring fatigue crack growth flaw tolerance Proceedings...

... in the right direction. In addition, by comparing the results of the fatigue crack growth (FCG) test of CCT/SENT specimens, it was shown that the program can be applied to the evaluation of major failure mechanisms in the nuclear power plants such as stress corrosion crack (SCC) growth and FCG. crack...

... appropriate, recent and current work aimed at understanding and reducing conservatisms are highlighted. The overview is associated with the fracture evaluations of limiting defect size and fatigue crack growth. fracture fatigue crack growth Proceedings of the ASME 2021 Pressure Vessels & Piping...

... Abstract Reference fatigue crack growth curves for austenitic stainless steels exposed to pressurized water reactor environments have been available in the ASME Code, Section XI in their present form with the publication of Code Case N-809 in Supplement 2 to the 2015 Code Edition. The reference...

... Abstract The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XI utilizes reference fatigue crack growth rate (FCGR) curves for flaw evaluations. The current ASME reference curve for austenitic stainless steels in air environments is a Paris-Law relation...

... Abstract The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XI utilizes reference fatigue crack growth rate (FCGR) curves for flaw evaluations. Code Case N-809 describes a reference curve currently used in flaw evaluations of austenitic stainless steels...

... 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 a dimension...

.... 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...

... 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 was based...

... temperatures and longer rise times, the WTKR method provides a more accurate prediction of fatigue crack growth rates than the application of ASME code case N-809. fatigue crack growth design codes testing non-isothermal THERMO-MECHANICAL FATIGUE CRACK GROWTH TESTING Jennifer Borg1, Norman Platts1...

... Abstract The reference Fatigue Crack Growth (FCG) rate behaviour for austenitic stainless steel in a deaerated Pressurised Water Reactor (PWR) environment is provided in ASME Section XI Code Case N-809. This FCG law is dependent on load ratio and environmental factors in terms of a defined...

... Abstract ASME Code Case N-809 provides Fatigue Crack Growth (FCG) expressions for austenitic stainless steels operating in a primary water environment within a Pressurised Water Reactor (PWR). The code case currently contains different expressions for nominally low-carbon (304L, 316L...

... Abstract An analysis of fatigue crack growth is required for large cast components to evaluate the possible defect evolution during the service life. These components are subjected to both mechanical loading and thermal loading. Due to their high thickness, temperature variations through...

... tolerance evaluation fatigue crack growth non-isolable drain line boron injection tank line cracking ASME Section XI RECENT OPERATIONAL EXPERIENCE OF PRESSURIZED WATER REACTOR SAFETY INJECTION AND DRAIN LINE CRACKING AND SUPPORTING FLAW EVALUATIONS Greg Imbrogno, Stephen Marlette, Alexandria...

... and Strength Division Dalhousie University, 1360 Barrington Street P.O. Box 1012, Dartmouth, Nova Scotia Halifax, NS, Canada B3J lZl Canada B2Y 3Z7 ABSTRACT A number of models are currently available for the prediction of fatigue crack growth (FCG). Among them, Zhang and Hirt model has been identified...

... 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...