| 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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conferencepaper
The effect of coating characteristics on the coating performance of a-C:H and ta-C films
Abstract
DLC films cover a wide range of different carbon basedcoatings, starting from soft to extremely harddiamond-like carbon films. In this study two differenttypes of DLC films have been studied in respect of theirstress and strain characteristics and tribologicalperformance. The coatings are hydrogenated amorphouscarbon (a-C:H) coatings deposited by PECVD andtetrahedral amorphous carbon (ta-C) coating deposited byfiltered arc technique. In order to evaluate themechanical behaviour of the coatings under load, 3D FEmodelling was carried out in combination with scratchtesting. Also the tribological performance was evaluatedwith pin-on-disc tests using stepwise increasing normalload. The 3D FEM model was developed for calculating thestress and strain distributions of DLC coated systems andto evaluate how coating thickness and elastic propertiesaffect the stress-strain state at crack initiationlocation. The simulation was compared to the findings toexperimental observations in scratch test contactconditions, when the spherical diamond tip was movingwith increased load on a coated surface. The coatingperformance was evaluated with scratch testing to detectthe crack generation as well as the coating adhesion.When combining the simulated coating characteristics withempirical observation of coating fracture patterns thecoating fracture performance and tolerance to crackingcould be evaluated. A major effect of the coating elasticmodulus on the stress and fracture behaviour of thecoatings was observed. In the tribological testing theboth coatings had a low friction performance. In thetribological testing with stepwise increasing load, thecritical load for coating delamination was higher for thea-C:H coating, which is in accordance with the results ofFE modelling of coating stress state.