| 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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Jivkov, Ap
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (60/60 displayed)
- 2024Discrete modelling of continuous dynamic recrystallisation by modified Metropolis algorithmcitations
- 2024Triple junction disclinations in severely deformed Cu-0.4%Mg alloyscitations
- 2024Discrete model for discontinuous dynamic recrystallisation applied to grain structure evolution inside adiabatic shear bandscitations
- 2024Defect-induced fracture topologies in Al2O3 ceramic-graphene nanocomposites
- 2023Topological characteristics of grain boundary networks during severe plastic deformations of copper alloyscitations
- 2022Capturing the Temperature Dependence of Cleavage Fracture Toughness in the Ductile-to-Brittle Transition Regime in Ferritic Steels using an Improved Engineering Local Approach
- 2021Triple junctions network as the key pattern for characterisation of grain structure evolution in metalscitations
- 2021Peridynamic modelling of desiccation induced cracking of cohesive soils
- 2021Incorporation of obstacle hardening into local approach to cleavage fracture to predict temperature effects in the ductile to brittle transition regimecitations
- 2021Optimisation of rGO-enriched nanoceramics by combinatorial analysiscitations
- 2021Non-local modelling of heat conduction with phase change
- 2021Modelling the soil desiccation cracking by peridynamicscitations
- 2020Evolution of triple junctions’ network during severe plastic deformation of copper alloys – a discrete stochastic modellingcitations
- 2019Use of local approaches to calculate changes in cleavage fracture toughness due to pre-straining and constraint effectscitations
- 2019A local approach to assess temperature effects on fracture toughness incorporating the measured distribution of microcracks
- 2019Using local approaches to fracture to quantify the local conditions during the ductile-to-brittle transition in ferritic steels
- 2019Experimental and numerical analyses of microstructure evolution of Cu-Cr-Zr alloys during severe plastic deformationcitations
- 2019A local approach incorporating the measured statistics of microcrack to assess the temperature dependence of cleavage fracture for a reactor pressure vessel steelcitations
- 2019Analysis of dynamic fracture and fragmentation of graphite bricks by combined XFEM and cohesive zone approachcitations
- 2018A local approach to assess effects of specimen geometry on cleavage fracture toughness in reactor pressure vessel steelscitations
- 20173D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM
- 2017Dynamic fracture analysis by explicit solid dynamics and implicit crack propagationcitations
- 2017Investigation of residual stress effects on apparent fracture toughness of high, medium and very low constraint geometries
- 2016Review of pore network modelling of porous media: experimental characterisations, network constructions and applications to reactive transportcitations
- 2016Multi-scale modelling of nuclear graphite tensile strength using the Site-Bond lattice modelcitations
- 2015Investigation of two-parameter approach to assessment of defects in residual stress fields
- 2014Image-based Cohesive Element Modelling of Low Temperature Crack Propagation on Alloy 82 Weld Metal
- 2014A meso-scale site-bond model for elasticity: Theory and calibrationcitations
- 2014Engineering criterion for rupture of brittle particles in a ductile matrix including particle size and stress triaxiality effects
- 2014Image-based Cohesive Element Modelling of Low Temperature Crack Propagation in Alloy 82 Weld Metal
- 2014Fracture energy of graphite from microstructure-informed lattice model
- 2014Computational modelling of the interaction between localised corrosion and stress
- 2014Application of analysis on graphs to site-bond models of damage evolution in heterogeneous materials
- 2013Cleavage Fracture in Ferritic Steel Weld: Characterization of second phase particles
- 2013Development of a microstructurally faithful meso-scale model of low temperature crack propagation in Alloy 82 weld metal
- 2013Cleavage fracture modelling for RPV steels: Discrete model for collective behaviour of micro-crackscitations
- 2013Cleavage Fracture in a Ferritic Steel Weld: Characterization of Second Phase Particles
- 2012Elastic behaviour of a regular lattice for meso-scale modelling of solidscitations
- 2012Modelling intergranular crack propagation to aid microstructure engineering. Part II: Results
- 2007Modelling Intergranular Stress Corrosion Cracking in Simulated Three-Dimensional Microstructurescitations
- 2007Rates of intergranular environment assisted cracking in three-dimensional model microstructurescitations
- 2007Modelling intergranular stress corrosion cracking in simulated three-dimensional microstructurescitations
- 2006A three-dimensional computational model for intergranular crackingcitations
- 2006Three dimensional observations and modelling of intergranular stress corrosion cracking in austenitic stainless steelcitations
- 2006Grain boundary control for improved intergranular stress corrosion cracking resistance in austenitic stainless steels: new approachcitations
- 2006Grain boundary control for improved intergranular stress corrosion cracking resistance in austenitic stainless steels: new approach
- 2006Intergranular Stress Corrosion Crack Propagation in Sensitised Austenitic Stainless Steel (Microstructure Modelling and Experimental Observation)
- 2006Meso-mechanical model for intergranular stress corrosion cracking and implications for microstructure engineering
- 2006A two-dimensional mesoscale model for intergranular stress corrosion crack propagationcitations
- 2005The roles of microstructure and mechanics in intergranular stress corrosion cracking
- 2005Computational studies of intergranular stress corrosion crack propagation and the role of bridging ligaments
- 2005Microstructure engineering for improved intergranular stress corrosion cracking resistance of stainless steels
- 2005Three dimensional observations and modelling of intergranular stress corrosion cracking in austenitic stainless steel
- 2005Deformation-promoted nucleation of corrosion cracks: State, problems, and perspectives
- 2004Strain-induced passivity breakdown in corrosion crack initiationcitations
- 2004Stress corrosion cracking as evolving interface problem
- 2003A model for calculation of stress corrosion crack growth
- 2003A moving boundary model for fatigue corrosion cracking
- 2003Surface irregularities as sources for corrosion fatigue
- 2003Corrosion crack growth in a bi-material system
Places of action
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conferencepaper
Computational studies of intergranular stress corrosion crack propagation and the role of bridging ligaments
Abstract
Previously reported high resolution X-ray tomographic observations of intergranular stress corrosion crack growth in sensitised austenitic stainless steel provided evidence that non-sensitised special grain boundaries form crack bridging ligaments along the crack surface. Two and three-dimensional meso-scale computational models of microstructure have been developed, both demonstrating that the phenomenon can be simulated and studied numerically. As 3D models have limitations in terms of computational power and time, full scale studies of the influence of the various model parameters, are reasonable on 2D models at present. A 2D computational model capable of mimicking the real 3D behaviour with crack bridging is presented and used as a simulation tool in this contribution. In terms of geometrical and physical description of the polycrystalline material, this model follows the framework of 2D percolation models used earlier. The material is described as an assembly of regular hexagonal cells, each of which substitutes one grain. The grain boundaries in the assembly are classified in a binary fashion as being either resistant or susceptible to corrosion. In mechanical terms these two types differ in their failure mode. The resistant boundaries are capable of developing inelastic deformations, while susceptible boundaries are assumed pre-oxidised and able to fail in a brittle manner. Crack propagation is a result of a sequence of grain boundaries failures decided from finite element calculations for equilibrium of the assembly with prescribed boundary conditions.Several experimentally determined fractions of resistant boundaries are considered. A number of random distributions of these in the assembly are studied. Results demonstrate crack propagation with branching and bridging comparable qualitatively to experimental observation. The influence of crack bridging on local crack driving force for various resistant boundaries fractions as well as susceptible and resistant boundaries strengths is presented and discussed.