| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Djordjević, Branislav
University of Belgrade
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024A conservative approach to 2SS modeling of KJc size effect in the transition region
- 2024Structural integrity of tapered cylindrical shell: Study case of tower wind turbine
- 2024Data-driven prediction of fracture toughness size effect in ductile-to-brittle transition using Two-Step-Scaling procedure
- 2023Size Effect Assessment of KJc Experimental Data Using the Two-Step-Scaling Method
- 2023Comparison of two recent approaches to DTB characterization of ferritic steelscitations
- 2023A Note on the Effect of Statistical Sample Size on Fracture Toughness Characterization in the DTB Transition Region
- 2023Upgraded Two-Step-Scaling Approach to the DTB Characterization of Ferritic Steels
- 2022History of ductile-to-brittle transition problem of ferritic steelscitations
- 2022Determination of ductile-to-brittle transition temperature of NIOMOL 490K steel welded jointscitations
Places of action
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article
Comparison of two recent approaches to DTB characterization of ferritic steels
Abstract
The large scatter of the experimental fracture toughness data, characteristic of all ferritic steels in the ductile-to-brittle transition temperature region, imposed the need to include statistical methods for data processing. Due to the inherent stochasticity, the application of fracture mechanics concepts in the characterization of the DTB transition phenomenon has remained a challenging task over the past 50 years. Various models were developed based on statistical approach to data processing in order to capture the salient features of the phenomenon, but all of them have certain limitations because of the intrinsic complexity of the problem. However, all these models provided a solid basis for the continued development of new approaches in the characterization of DTB. Such two novel models are compared herein. They include size effects and utilize scaling of geometrically similar C(T) specimens, with the aim of obtaining predictions of the fracture toughness. Both proposed models have the weakest link statistics in common. In the present study, the EURO fracture toughness data set for 22NiMoCr37 reactor steel is used and the experimental data obtained at temperature of -60 ºC is selected to demonstrate the accuracy of the estimates. 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, taking into account the inherent scatter of the experimental data. The estimate of KJc cumulative distribution function obtained by extrapolation using the novel two-stepscaling method is sensitive to the statistical size of the input data sets.