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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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Léonard, Fabien
European Synchrotron Radiation Facility
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2022On the Morphological and Crystallographic Anisotropy of Diesel Particulate Filter Materialscitations
- 2022Metal FFF sintering shrinkage rate measurements by X-ray computed tomographycitations
- 2020The impact of post manufacturing treatment of functionally graded Ti6Al4V scaffolds on their surface morphology and mechanical strengthcitations
- 2019Experimental determination and numerical simulation of material and damage behaviour of 3D printed polyamide 12 under quasi-static loading
- 2017In vivo XCT bone characterization of lattice structured implants fabricated by additive manufacturingcitations
- 2017X-ray tomography characterisation of lattice structures processed by selective electron beam meltingcitations
- 2017A multi-scale correlative investigation of ductile fracturecitations
- 2017Laser-induced slip casting (LIS) – a new additive manufacturing process for dense ceramics demonstrated with Si3N4
- 2017The quantification of impact damage distribution in composite laminates by analysis of X-ray computed tomogramscitations
- 2016The effect of defects on the mechanical response of Ti-6Al-4V cubic lattice structures fabricated by electron beam meltingcitations
- 2015The effect of density and feature size on mechanical properties of isostructural metallic foams produced by additive manufacturingcitations
- 2014Progressive fatigue damage in 3D modified layer-to-layer woven composites characterised by X-ray tomography
- 2013Characterizing the effects of elevated temperature on the air void pore structure of advanced gas-cooled reactor pressure vessel concrete using x-ray computed tomographycitations
- 2013Advanced assessment of the ductile fracture mechanism in A508 class 3 reactor pressure vessel steel using laboratory X-ray tomographycitations
- 2013Advanced assessment of ductile tearing in nuclear reactor pressure vessel steel using x-ray tomography
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document
Advanced assessment of the ductile fracture mechanism in A508 class 3 reactor pressure vessel steel using laboratory X-ray tomography
Abstract
Ductile damage is characterised by the nucleation, growth and coalescence of voids at initiating particles within the volume of high triaxial stresses and plastic strain ahead of a crack-tip or stress concentrator. To establish a more detailed understanding of the mechanism of ductile fracture in the A508 Class 3 ferritic RPV steels and to improve fracture models, the ductile damage was quantified below the fracture surface of tested compact test specimens using laboratory X-ray tomography imaging with sufficient resolution to image voids of approximately 10μm in diameter. The average distribution of void volume fraction as a function of distance below the fracture surface was quantified, and the initiating and coalescence mechanisms were characterised. The highest void volume fraction was observed at the fracture surface and this tends to decrease as a function of distance below the fracture surface. This decrease is periodically perturbed by large voids associated with inclusions which are distributed throughout the microstructure and act as further nucleating sites at low strains. This distribution of voids was correlated with the local variations in stress triaxiality and plastic strain derived from finite element analyses to provide a relationship between experimental observations and the Rice and Tracey model. These correlations aim to provide new data and understanding with which to calibrate mechanistically based models such as the Gurson-Tvergaard-Needleman (GTN) model. Copyright © 2013 by ASME.