| 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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Depraetere, Robin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Damage evolution of a hydrogen charged grade X56 pipeline steel evaluated using X-ray micro-CTcitations
- 2024The effect of hydrogen and notch orientation in SENT specimens on the fracture toughness of an API 5L X70 pipeline steelcitations
- 2024Hydrogen-assisted degradation of an X70 pipeline steel evaluated by single edge notched tension testingcitations
- 2023Modeling of hydrogen-charged notched tensile tests of an X70 pipeline steel with a hydrogen-informed Gurson modelcitations
- 2023Effect of stress triaxiality on the hydrogen embrittlement micromechanisms in a pipeline steel evaluated by fractographic analysiscitations
- 2023Influence of stress triaxiality on hydrogen assisted ductile damage in an X70 pipeline steelcitations
- 2022Characterization of hydrogen-assisted degradation of a vintage and a modern pipeline steel
- 2022Single edge notched tension testing for assessing hydrogen embrittlement : a numerical study of test parameter influencescitations
- 2022Hydrogen embrittlement in pipeline steels and welds
- 2022Influence of electrochemical hydrogenation parameters on microstructures prone to hydrogen-induced crackingcitations
- 2022Effect of hydrogen charging on Charpy impact toughness of an X70 pipeline steelcitations
- 2021Fully-coupled continuum damage model for simulation of plasticity dominated hydrogen embrittlement mechanismscitations
- 2021Fully-coupled continuum damage model for simulation of plasticity dominated hydrogen embrittlement mechanismscitations
- 2020Calibrating a ductile damage model for two pipeline steels : method and challengescitations
- 2020Calibrating a ductile damage model for two pipeline steels : method and challengescitations
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document
Calibrating a ductile damage model for two pipeline steels : method and challenges
Abstract
This work is part of a project that aims to develop a micromechanics based damage law taking into account hydrogen assisted degradation. A 'vintage' API 5L X56N and a 'modern' API 5L X70M pipeline steel have been selected for this purpose. The paper focuses on an experimental calibration of ductile damage properties of the well known complete Gurson model for the two steels in absence of hydrogen. A basic microstructural characterization is provided, showing a banded ferrite-pearlite microstructure for both steels. Charpy impact tests showed splits at the fracture surface for the X70 steel. Double-notched round bar tensile tests are performed, aiming to provide the appropriate input for damage model calibration. The double-notched nature of the specimens allows to examine the material state at maximum load in the unfailed notch, and the final material state in the failed notch. Different notch radii are used, capturing a broad range of positive stress triaxialities. The notches are optically monitored for transverse necking in two perpendicular directions (transverse to rolling and through thickness) to reveal any anisotropy in plastic deformation and/or damage. It is explained how the occurrence of splits at the segregation zone, and anisotropy complicate the calibration procedure. Calibration is done for each steel and acceptable results are obtained. However, the occurrence of splits did not allow to evaluate the damage model for the highest levels of tested stress triaxiality.