| 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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Rantala, Juhani
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2024Crystal plasticity model for creep and relaxation deformation of OFP coppercitations
- 2023Crystal plasticity model for creep and relaxation deformation of OFP coppercitations
- 2021Creep properties of 9Cr and 14Cr ODS tubes tested by inner gas pressurecitations
- 2018Experimentally verified model based predictions for integrity of copper overpack:Annual report 2017
- 2018Experimentally verified model based predictions for integrity of copper overpack
- 2017Microstructural and mechanical characterization of ODS alloy produced by surface oxidation method
- 2016Multiaxial creep testing device for nuclear fuel claddings
- 2016Relaxation behaviour of copper in disposal canisters
- 2016Impression creep testing for the HAZ of a P22 weld
- 2016Creep performance of fuel cladding
- 2016Creep analyses of a steam pipe system
- 2015Material integrity of welded copper overpack:Annual report 2014
- 2015Material integrity of welded copper overpack
- 2013Creep damage and long term life modelling of an X20 steam line componentcitations
- 2013Practical application of impression creep data to power plant
- 2013Performance of copper overpack for repository canisters
- 2010Creep damage and long term life of steam line components
- 2010Mechanical performance and life prediction for canister copper
- 2010Creep damage and long term life of steam line components:Case X20
- 2009Modeling and verification of creep strain and exhaustion in a welded steam mixercitations
- 2008Modelling and verification of creep strain and exhaustion in a welded steam mixer
- 2008Creep damage, ductility and expected life for materials with defects
- 2007The LICON approach to life management
- 2001Modelling the development of creep damage:The licon experience
- 2001Modelling the development of creep damage
Places of action
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document
Creep damage, ductility and expected life for materials with defects
Abstract
Defects can pre-exist and grow by creep in structuressubjected to loading at high temperatures. As structuralintegrity is not necessarily conveniently predicted andmanaged by applying design and life assessment techniquesintended for nominally defect-free material, it isimportant that methods are available for quantified andsafe assessment of defects. In addition to the assessmentmethods, also materials behaviour will affect the likelyoutcome. In particular, ductility of the materials isimportant, and unfortunately ductility tends to decreasewhen shifting from short-term testing to long term creepconditions. In this paper, two examples are shown ofmaterials with such ductility effects when combined withdefects. The first example involves 316H stainless steelsubjected to creep loading with an extensive crack-likedefect, resulting in a transformation frommicroscopically ductile to brittle intergranular crackingwithin a relatively modest time span. The second examplewill demonstrate a corresponding shift in OFP copper thatshows a radical ductility and life reduction in creepwhen including so small weld defects that they would beundetectable in conventional NDT.