Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The phenomenon of ductile-to-brittle transition (DBT) in ferritic steels, widely used in design of nuclear reactor pres-sure vessels, has been a pervasive semi-centennial research topic. Due to the extremely pronounced experimental data scatter, the statistical approach to characterization of this problem has become inevitable from the earliest analyses. In the present study, the fracture toughness parameters derived from the EURO fracture toughness dataset for 22NiMoCr37 reactor steel are used with the aim to explore the utility of the recently proposed two-step-scaling method. Two widely different temperatures (-154 °C and -91 °C; belonging to the lower shelf and the DBT transition regions of fracture toughness, in respect) are selected to demon-strate the accuracy of extrapolation and interpolation of the fracture toughness CDF (cumulative distribution function) and the pertinent issues related to the method application. The fracture toughness measure used is the critical value of t...he stress intensity factor used in the master curve KJc (MPa√m). The obtained predictions are in good agreement with the experimental results and well within the inherent experimental data scatter. The prediction of the fracture toughness CDF obtained by extrapolation using the novel two-step-scaling method is reasonably conservative.
Кључне речи:
size effect / ductile-to-brittle transition / ferritic steel / fracture toughnessИзвор:
Structural Integrity and Life, 2023, 23, 2, 105-110Издавач:
- Society for Structural Integrity and Life
Финансирање / пројекти:
- This research was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia.
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Mastilović, Sreten AU - Djordjević, Branislav AU - Sedmak, Aleksandar AU - Kirin, Snežana PY - 2023 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2098 AB - The phenomenon of ductile-to-brittle transition (DBT) in ferritic steels, widely used in design of nuclear reactor pres-sure vessels, has been a pervasive semi-centennial research topic. Due to the extremely pronounced experimental data scatter, the statistical approach to characterization of this problem has become inevitable from the earliest analyses. In the present study, the fracture toughness parameters derived from the EURO fracture toughness dataset for 22NiMoCr37 reactor steel are used with the aim to explore the utility of the recently proposed two-step-scaling method. Two widely different temperatures (-154 °C and -91 °C; belonging to the lower shelf and the DBT transition regions of fracture toughness, in respect) are selected to demon-strate the accuracy of extrapolation and interpolation of the fracture toughness CDF (cumulative distribution function) and the pertinent issues related to the method application. The fracture toughness measure used is the critical value of the stress intensity factor used in the master curve KJc (MPa√m). The obtained predictions are in good agreement with the experimental results and well within the inherent experimental data scatter. The prediction of the fracture toughness CDF obtained by extrapolation using the novel two-step-scaling method is reasonably conservative. PB - Society for Structural Integrity and Life C3 - Structural Integrity and Life T1 - Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method EP - 110 IS - 2 SP - 105 VL - 23 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2098 ER -
@conference{ author = "Mastilović, Sreten and Djordjević, Branislav and Sedmak, Aleksandar and Kirin, Snežana", year = "2023", abstract = "The phenomenon of ductile-to-brittle transition (DBT) in ferritic steels, widely used in design of nuclear reactor pres-sure vessels, has been a pervasive semi-centennial research topic. Due to the extremely pronounced experimental data scatter, the statistical approach to characterization of this problem has become inevitable from the earliest analyses. In the present study, the fracture toughness parameters derived from the EURO fracture toughness dataset for 22NiMoCr37 reactor steel are used with the aim to explore the utility of the recently proposed two-step-scaling method. Two widely different temperatures (-154 °C and -91 °C; belonging to the lower shelf and the DBT transition regions of fracture toughness, in respect) are selected to demon-strate the accuracy of extrapolation and interpolation of the fracture toughness CDF (cumulative distribution function) and the pertinent issues related to the method application. The fracture toughness measure used is the critical value of the stress intensity factor used in the master curve KJc (MPa√m). The obtained predictions are in good agreement with the experimental results and well within the inherent experimental data scatter. The prediction of the fracture toughness CDF obtained by extrapolation using the novel two-step-scaling method is reasonably conservative.", publisher = "Society for Structural Integrity and Life", journal = "Structural Integrity and Life", title = "Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method", pages = "110-105", number = "2", volume = "23", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2098" }
Mastilović, S., Djordjević, B., Sedmak, A.,& Kirin, S.. (2023). Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method. in Structural Integrity and Life Society for Structural Integrity and Life., 23(2), 105-110. https://hdl.handle.net/21.15107/rcub_rimsi_2098
Mastilović S, Djordjević B, Sedmak A, Kirin S. Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method. in Structural Integrity and Life. 2023;23(2):105-110. https://hdl.handle.net/21.15107/rcub_rimsi_2098 .
Mastilović, Sreten, Djordjević, Branislav, Sedmak, Aleksandar, Kirin, Snežana, "Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method" in Structural Integrity and Life, 23, no. 2 (2023):105-110, https://hdl.handle.net/21.15107/rcub_rimsi_2098 .