693.932 PEOPLE
| 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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Mostafavi, Mahmoud
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (58/58 displayed)
- 2024Investigating grain-resolved evolution of lattice strains during plasticity and creep using 3DXRD and crystal plasticity modellingcitations
- 2024Modelling the Effect of Residual Stresses on Damage Accumulation Using a Coupled Crystal Plasticity Phase Field Fracture Approach
- 2024A correlative approach to evaluating the links between local microstructural parameters and creep initiated cavitiescitations
- 2024Effect of grain boundary misorientation and carbide precipitation on damage initiation:A coupled crystal plasticity and phase field damage studycitations
- 2024Productive Automation of Calibration Processes for Crystal Plasticity Model Parameters via Reinforcement Learningcitations
- 2024Calibration and surrogate model-based sensitivity analysis of crystal plasticity finite element models
- 2024Towards a Data-Driven Evolutionary Model of the Cyclic Behaviour of Austenitic Steels
- 2024Effect of grain boundary misorientation and carbide precipitation on damage initiationcitations
- 2023Validation of Deformation in Crystal Plasticity When Modelling 316H Stainless Steel for Use in Pressure Vessels
- 2023A novel unified constraint parameter based on plastic strain energycitations
- 2023The inclusion and role of micro mechanical residual stress on deformation of stainless steel type 316L at grain levelcitations
- 2023Bridging Length Scales Efficiently Through Surrogate Modellingcitations
- 2022A method to extract slip system dependent information for crystal plasticity modelscitations
- 2022The effects of internal stresses on the creep deformation investigated using in-situ synchrotron diffraction and crystal plasticity modellingcitations
- 2022Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlationcitations
- 2021Investigating the microstructure and mechanical behaviour of simulant "lava-like" fuel containing materials from the Chernobyl reactor unit 4 meltdowncitations
- 2021An Experimental Approach to the Application of Digital Image Correlation to Small Punch Creep Testingcitations
- 2021Evaluation of fracture toughness and residual stress in AISI 316L electron beam weldscitations
- 2021In-situ Measurements of Stress During Thermal Shock in Clad Pressure Vessel Steel Using Synchrotron X-ray Diffractioncitations
- 2020Unifying the effects of in and out-of-plane constraint on the fracture of ductile materialscitations
- 2020Microstructure-informed, predictive crystal plasticity finite element model of fatigue-dwellscitations
- 2020A novel insight into the primary creep regeneration behaviour of a polycrystalline material at high-temperature using in-situ neutron diffractioncitations
- 2020A novel insight into the primary creep regeneration behaviour of a polycrystalline material at high-temperature using in-situ neutron diffractioncitations
- 2020Measurement of strain evolution in overloaded roller bearings using time-of-flight neutron diffractioncitations
- 2019Residual stress in laser cladded railcitations
- 2019Validating 3D two-parameter fracture mechanics models for structural integrity assessmentscitations
- 2019Application of neutron imaging to detect and quantify fatigue crackingcitations
- 2019Effects of In-Plane and Out-of-Plane Constraint on Fracture Toughness in Austenitic Stainless Steel
- 2019Study of the Fracture Toughness in Electron Beam Welds
- 2019Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEMcitations
- 2019Repeat stress relaxation of notched bars and the dependence of creep damage on relaxation ratecitations
- 2019Redistribution of residual stress by thermal shock in reactor pressure vessel steel clad with nickel alloycitations
- 2018Influence of prior cyclic plasticity on creep deformation using crystal plasticity modellingcitations
- 2018Correlative optical and X-ray imaging of strain evolution during double-torsion fracture toughness measurements in shalecitations
- 2018Mapping of axial plastic zone for roller bearing overloads using neutron transmission imagingcitations
- 2018Temperature Driven Failure of Carbon Epoxy Composites:A Quantitative Full-field Studycitations
- 2018Temperature Driven Failure of Carbon Epoxy Compositescitations
- 2018The effect of creep strain rate on damage accumulation in Type 316H austenitic stainless steelcitations
- 2018Development of Residual Stresses During Laser Claddingcitations
- 2018Correlative Optical and X‐Ray Imaging of Strain Evolution During Double‐Torsion Fracture Toughness Measurements in Shalecitations
- 2018Fabrication of micro-scale fracture specimens for nuclear applications by direct laser writing
- 2018Measurements of stress during thermal shock in clad reactor pressure vessel material using time-resolved in-situ synchrotron X-ray diffractioncitations
- 2017An autonomous surface discontinuity detection and quantification method by digital image correlation and phase congruencycitations
- 2017Synchrotron X-ray characterization of crack strain fields in polygranular graphitecitations
- 2017In-situ X-ray computed tomography characterisation of 3D fracture evolution and image-based numerical homogenisation of concretecitations
- 2016Observation and simulation of indentation damage in a SiC-SiC fibre ceramic matrix compositecitations
- 2016Obtaining the J-integral by diffraction-based strain mappingcitations
- 2016Observation and simulation of indentation damage in a SiC-SiCfibre ceramic matrix compositecitations
- 2016Characterisation of overloads in fatigue by 2D strain mapping at the surface and in the bulkcitations
- 2016Obtaining the J-integral by diffraction-based crack-field strain mappingcitations
- 2016Quantifying yield behaviour in metals by X-ray nanotomographycitations
- 2015A synchrotron X-ray diffraction study of in situ biaxial deformationcitations
- 2015Yield behaviour beneath hardness indentations in ductile metals, measured by three-dimensional computed X-ray tomography and digital volume correlationcitations
- 2014A quantitative three-dimensional in situ study of a short fatigue crack in a magnesium alloycitations
- 2013Three-dimensional crack observation, quantification and simulation in a quasi-brittle materialcitations
- 2013Three-dimensional observation and image-based modelling of thermal strains in polycrystalline aluminacitations
- 2011In situ observation of crack nuclei in poly-granular graphite under ring-on-ring equi-biaxial and flexural loadingcitations
- 20091Constraint influence on the micromechanics of the Al2024 fracture behaviour
Places of action
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article
Fabrication of micro-scale fracture specimens for nuclear applications by direct laser writing
Abstract
The structural integrity of nuclear fission and fusion power plant components is the focus of this research. The state of the art is using micro scale specimens milled with a focussed ion beam (FIB). Because of their very low volume such specimens can be lab tested, even when irradiated to low or medium level of activity. This offers a possibility of testing multiple specimens to investigate stochastic effects, e.g. effects of irradiation on the shift of the ductile to brittle transition. However, FIB milled specimens suffer from Ga contamination, to the degree that the validity of fracture data obtained on such specimens is questionable. We propose to use nano-additive manufacturing as an alternative to FIB for making micro scale fracture specimens. A combination of two-photon polymerization and electrodeposition and sputtering was used to manufacture micro-scale Brazilian disk fracture specimens (CBD), which are free from Ga and thus better suited for the study of irradiation effects on structural integrity. In this study Ni CBD specimens were made with 30 µm diameter and up to 13 µm thickness. The slot width varied between 1 µm to 2.9 µm width the corresponding slot length of between 7.5 µm and 8 µm. Consecutive FIB characterization shows that the specimens have polycrystalline microstructure with sub-µm grains. The work is ongoing making W CBD specimens and on reducing the slot width and using chemical vapor deposition fabrication.