... Standards. The flaw tolerance analysis postulates a pre-existing flaw at the location of interest and calculates fatigue crack growth to determine inspection intervals necessary to assure that the fatigue-growing flaw can be detected before it exceeds the allowable size. To account for the possibility...

...Proceedings of the ASME 2024 Pressure Vessels & Piping Conference PVP2024 July 28-August 2, 2024, Bellevue, Washington PVP2024-124195 EPRG FULL SCALE FATIGUE CRACK GROWTH TEST ON A MODERN LINEPIPE MATERIAL IN GASEOUS HYDROGEN Bostjan Bezensek1, Otto Jan Huising2, Luca Bacchi3, Paul Roovers4...

... vintage linepipe hydrogen fatigue crack growth fracture toughness subcritical crack growth time dependent cracking Abstract This paper focuses on the use of a variety of different small scale test methods to assess the fracture resistance of the material in gaseous hydrogen and study...

... fatigue fatigue crack growth austenitic stainless steel temperature air Abstract Fatigue crack growth rates da/dN for stainless steels in air environment are provided by the ASME Boiler and Pressure Vessel Code in Section XI. The fatigue crack growth rates are given by da/dN = C F (ΔK...

... on the fracture surface of specimens. Although the fatigue lives of specimen should be compared based on the same crack depth, crack depths are different among the specimens when the fatigue test finished. To compare the fatigue lives based on the same standard life among the specimens, the fatigue crack growth...

... Abstract The American Society of Mechanical Engineers Boiler & Pressure Vessel (ASME B&PV) Code Section XI provides procedures for fatigue crack growth calculation which can be used for flaw evaluations. However, the solutions in ASME B&PV Code Section XI are for straight pipes...

... cracks. After crack coalescence, criteria for crack tip relaxation considering the spider-web mesh were applied, and the coalescence distance criterion from ASME Section XI was employed. Fatigue crack growth was performed using both the coalescence criteria applied in the program and those from ASME...

... element analysis fatigue crack growth stress intensity factor linear elastic fracture mechanics Proceedings of the ASME 2024 Pressure Vessels & Piping Conference PVP2024 July 28-August 2, 2024, Bellevue, Washington PVP2024-121895 FITNESS-FOR-SERVICE ANALYSIS OF A LIGHT WATER REACTOR PRESSURE VESSEL...

... bainitic steel of various strengths as the test material. Compared with the linepipe base material, namely American Petroleum Institute (API) grade X65, the fracture toughness of API grade X80 was inferior but that of API grade X70 was superior. The fatigue crack growth characteristics in hydrogen were...

... hydrogen embrittlement austenitic stainless steel fatigue crack growth effect of temperature Abstract The fatigue crack growth rate (FCGR) of austenitic stainless steel 1.4404 was measured in uncharged and in gaseous hydrogen precharged conditions, both as a function of temperature...

... Abstract Fracture toughness and fatigue crack growth testing was performed on the parent and weld microstructures of a vintage offshore API 5L X60 grade pipeline material to assess the impact of various partial pressures of gaseous H 2 . Fracture toughness values were found to reduce compared...

... data and, thus, to obtain more consistent and reliable Kth-values. The method relies on performing a compression precracking, in which both maximum and minimum loads are compressive, thereby resulting in a tensile residual stress field at the crack tip. Fatigue crack growth (FCG) tests conducted...

... of aluminum alloys for hydrogen applications. In this study, we investigate the effect of gaseous hydrogen on fatigue and fracture behavior of four aluminum alloys: 5083, 2219, 7050, and 7475. Fatigue crack growth behavior of these alloys is investigated in air and in gaseous hydrogen at pressure of 1,000 bar...

... (Examination Categories B-F and B-J) examination requirements specific to CASS piping. Keywords: ASME Section XI; Cast austenitic stainless steel (CASS); Fatigue crack growth; Probabilistic fracture mechanics (PFM) NOMENCLATURE a Crack depth c Crack half-length Cr Coefficient of the power-law J-R curve Cvsat...

... Engineering, Inc., Reston, VA 2Westinghouse Electric Company, Pittsburgh, PA 3Kinectrics, Toronto, ON Canada 4EPRI, Palo Alto, CA ABSTRACT Nonmandatory Appendix Y of ASME Section XI presents relationships for fatigue crack growth rates and stress corrosion crack growth rates for austenitic stainless steels...

... growth are compared and analyzed. The results show that the fatigue crack growth life of hydrogen storage vessel evaluated by fracture mechanics methods in different standards is quite different, and the fatigue crack growth life evaluated by different calculation processes exhibits different trends...

... 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...

... 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...

...Proceedings of the ASME 2022 Pressure Vessels & Piping Conference PVP2022 July 17-22, 2022, Las Vegas, Nevada, USA PVP2022-84208 THE DEVELOPMENT OF A NEW METHOD TO COMPARE THE FATIGUE CRACK GROWTH RATES OF AUSTENITIC STAINLESS STEEL OPERATING IN A PWR PRIMARY COOLANT SUBJECTED TO PLANT REALISTIC...

... different thermal zones is nontrivial. Drawing on previous work, this paper discusses the challenge along with a proposed solution. Keywords: inverse conduction; thermal fatigue; fatigue monitoring; fatigue crack growth; flaw tolerance NOMENCLATURE Tloc Local temperature (°C) Trem Remote measured temerature...