| 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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Andersson, Tom
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (51/51 displayed)
- 2024Crystal plasticity model for creep and relaxation deformation of OFP coppercitations
- 2023Estimating Long Term Behaviour Of DED-printed AlCoNiFe Alloy
- 2023Estimating Long Term Behaviour Of DED-printed AlCoNiFe Alloy
- 2023Micromechanical modeling of single crystal and polycrystalline UO2 at elevated temperaturescitations
- 2023Performance Driven Design And Modeling Of Compositionally Complex AM Al-Co-Ni-Fe Alloys
- 2023Performance Driven Design And Modeling Of Compositionally Complex AM Al-Co-Ni-Fe Alloys
- 2023Crystal plasticity model for creep and relaxation deformation of OFP coppercitations
- 2023Micromechanical modeling of single crystal and polycrystalline UO 2 at elevated temperaturescitations
- 2022Numerical Design Of High Entropy Super Alloy Using Multiscale Materials Modeling And Deep Learning
- 2022Crystal Plasticity Modeling of Grey Cast Irons under Tension, Compression and Fatigue Loadingscitations
- 2022Micromechanical modelling of additively manufactured high entropy alloys to establish structure-properties-performance workflow
- 2022Opportunities Of Physics-Based Multi-Scale Modeling Tools In Assessing Intra-Grain Heterogeneities, Polycrystal Properties And Residual Stresses Of AM Metals
- 2022Micromorphic crystal plasticity approach to damage regularization and size effects in martensitic steelscitations
- 2021Micromechanical modeling approach to single track deformation, phase transformation and residual stress evolution during selective laser melting using crystal plasticitycitations
- 2021Micromechanics driven design of ferritic–austenitic duplex stainless steel microstructures for improved cleavage fracture toughnesscitations
- 2021Crystal plasticity with micromorphic regularization in assessing scale dependent deformation of polycrystalline doped copper alloyscitations
- 2021Micromechanical and multi-scale modeling of manganese containing slag comminution in the design of energy efficient secondary raw material beneficiation processescitations
- 2020Development and validation of coupled erosion-corrosion model for wear resistant steels in environments with varying pHcitations
- 2020Modelling selective laser melting machine configurations
- 2020Micromechanical modeling of polycrystalline high manganese austenitic steel subjected to abrasive contactcitations
- 2019Micromechanical modeling of short crack nucleation and growth in high cycle fatigue of martensitic microstructurescitations
- 2019Data-Driven Optimization Of Metal Additive Manufacturing Solutions
- 2019On The Linking Performance Evaluation Toolset To Process-structure-properties Mapping Of Selective Laser Melting 316L Stainless Steel Using Micromechanical Approach With A Length-scale Dependent Crystal Plasticity
- 2019Process-Structure-Properties-Performance Modeling for Selective Laser Meltingcitations
- 2019A multiscale modelling approach for estimating the effect of defects in unidirectional carbon fiber reinforced polymer compositescitations
- 2018Modelling of hygroexpansion in birch pulp - PLA composites
- 2018Utilizing the theory of critical distances in conjunction with crystal plasticity for low-cycle notch fatigue analysis of S960 MC high-strength steelcitations
- 2018Modelling of hygroexpansion in birch pulp - PLA composites:A numerical approach based on X-ray micro-tomography
- 2018Process-to-structure mapping of selective laser melting of a nickel based superalloy via phase field modelling
- 2018Micromechanical model for fatigue limit of metal AM parts and materials
- 2018Micromechanical modeling of titanium carbide composites with high work hardening metal matrix
- 2017Micromechanical modeling of failure behavior of metallic materialscitations
- 2016Effective interface model for design and tailoring of wc-co microstructurescitations
- 2016Modeling chloride ingress under freeze-thaw loading – 3D fem approach
- 2016Modeling chloride ingress under freeze-thaw loading – 3D fem approach
- 2016Component scale process model for metal additive manufacturing
- 2016Relaxation behaviour of copper in disposal canisters
- 2016Predicting stiffness and strength of birch pulp:Polylactic acid compositescitations
- 2016Optimization and simulation of SLM process for high density H13 tool steel partscitations
- 2015Effective interface model for design and tailoring of wc-co microstructures
- 2015Mesoscale modelling of short crack initiation in metallic selective laser melting microstructures
- 2015Material integrity of welded copper overpack:Annual report 2014
- 2015Material integrity of welded copper overpack
- 2013Creep properties of Zircaloy-4 for nuclear fuel cladding FEA simulation
- 2013Performance of copper overpack for repository canisters
- 2013Creep life simulations of EB welded copper overpack
- 2012The effect of coating characteristics on the coating performance of a-C:H and ta-C films
- 2012The effect of coating properties on the performance of a-C:H and ta-C films
- 2011Fracture Assessment of Reactor Circuit (FRAS):Advanced numerical fracture assessment methods
- 2010Analysis of Discontinuities in Metallic Materials With the Extended Finite Element Method ; Epäjatkuvuuksien analysointi metallisissa materiaaleissa XFEM-menetelmällä
- 2010Characterization of true stress-strain behavior using optical monitoring
Places of action
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report
Material integrity of welded copper overpack
Abstract
The research programme on the creep issues of the nuclearwaste disposal canister copper material has continuedwith long-running uniaxial and multiaxial experiments aswell as relaxation testing to support the materialmodelling activities, which produce appropriate materialmodels to be used in the FE analysis, which will be usedto assess the stresses and strains in the criticallocations of the canister.The relaxation testing is ongoing and it has provennecessary to use a servo-mechanical testing machine inorder to generate good quality test data. The initial FEprediction of strain rates calculated by the LCSP creepmodel and a relaxation model suggests a clear difference,but this needs to be verified after a better relaxationmodel is defined based on much more data.The most important result of this year has been theobservation of cracking in the oxide particle zone at thefriction stir weld root in the longest running CT test,which was terminated after 50 000 hours for sectioningand metallographic investigations. The oxide particleshave nucleated creep cavities which have eventually leadto cracking of the oxide particle zone in spite of thelow stress state 8 mm ahead of the notch tip. Thisobservation is in line with the earlier results fromuniaxial creep tests with a radial sample from the weldroot. The weakness only manifests itself in long-termtesting because the cavity nucleation and growth processis a slow process. Because of the low strength of theoxide particle zone welding in air should be avoided andvacuum or inert gas should be used instead.