| 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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Mcdonald, Samuel Alan
MAX IV Laboratory
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2018AN INVESTIGATION INTO THE INTERFACE BEHAVIOUR OF AN ALUMINIUM/SILICON CARBIDE FIBRE METAL MATRIX COMPOSITE
- 2017Crack healing behaviour of Cr2AlC MAX phase studied by X-ray tomographycitations
- 2017Strain-induced Reactivation of Corrosion Pits in Austenitic Stainless Steelcitations
- 2017Microstructural evolution during sintering of copper particles studied by laboratory diffraction contrast tomography (LabDCT)citations
- 2016Application of a Quasi in-situ Experimental Approach to Estimate 3-D Pitting Corrosion Kinetics in Stainless Steelcitations
- 2014Correlative tomographycitations
- 2013Observation and quantification of three-dimensional crack propagation in poly-granular graphitecitations
- 2012In-situ X-ray microtomography study of the movement of a granular material within a diecitations
- 2012Spallation response of Ti-6Al-4V: Rear surface velocimetry and X-ray tomographycitations
- 2011In situ 3D X-ray microtomography study comparing auxetic and non-auxetic polymeric foams under tensioncitations
- 2009Shear cracking in an Al powder compact studied by X-ray microtomographycitations
- 2007The shock response, simulation and microstructural determination of a model composite materialcitations
- 2006Particle movement during the deep penetration of a granular material studied by X-ray microtomographycitations
- 2004Quantification of creep cavitation damage around a crack in a stainless steel pressure vesselcitations
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article
Observation and quantification of three-dimensional crack propagation in poly-granular graphite
Abstract
Observations of fracture are generally restricted to the surface of test specimens; yet the fracture process occurs within the material. X-ray computed tomography (XCT) provides valuable insights into the structures within materials: when XCT is combined with digital volume correlation (DVC) the response to applied loads can be measured with high precision in the form of the three-dimensional displacement field within the material. This paper reports a study of the fracture behaviour of a short-bar chevron notch crack propagation specimen fabricated from polygranular nuclear graphite - a quasi-brittle material. A three-dimensional linear elastic finite element simulation of the specimen obtained the relations between crack length, opening displacement and stress intensity factor along the crack front. Tomographic absorption contrast images were obtained from the specimen before and after crack propagation, whilst loaded. The DVC-measured displacement field was used to measure and map the crack opening displacements in 3D; the experimentally calculated crack opening displacements were consistent with the FE-predicted values. The measurements demonstrate the existence of a cohesive fracture process zone ahead of the crack tip, which is a characteristic of quasi-brittle materials. This suggests that simulation of the fracture of non-irradiated polygranular nuclear graphite requires a material model capable of showing softening behaviour. © 2013 Elsevier Ltd.