Local approach has been used to compute a) Jinitiation and JR curves at different temperatures and b) fracture toughness transition curves for German Reactor Pressure Vessel Steel 22NiMoCr37. Ductile fracture has been analyzed using Gurson material constitutive model and probability of cleavage failure is calculated using Beremin’s model. A variation of Gurson parameter q2 near crack tip region as a function of charpy energy is suggested to obtain Jinitiation as well as complete JR curve accurately at different metal temperatures.
- Pressure Vessels and Piping Division
Analytical Determination of Material JR and Fracture Toughness Transition Curves Using Micro-Mechanical Modelling
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Dutta, BK, Samal, MK, Sahu, MK, & Kushwaha, HS. "Analytical Determination of Material JR and Fracture Toughness Transition Curves Using Micro-Mechanical Modelling." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. Experience With Creep-Strength Enhanced Ferritic Steels and New and Emerging Computational Methods. San Diego, California, USA. July 25–29, 2004. pp. 257-268. ASME. https://doi.org/10.1115/PVP2004-2588
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