| 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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Lunt, Alexander J. G.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Influence of the γ/γ′ Misfit on the Strain-Age Cracking Resistance of High-γ′ Ni and CoNi Superalloys for Additive Manufacturing
- 2023The effect of porosity on strain evolution and failure of soldered, small-diameter, thin-walled metallic pipescitations
- 2023The influence of manufacturing on the buckling performance of thin-walled, channel-section CFRP profiles—An experimental and numerical studycitations
- 2023Characterisation of residual stresses and oxides in titanium, nickel, and aluminium alloy additive manufacturing powders via synchrotron X-ray diffractioncitations
- 2022An experimental and numerical study of industrially representative wrinkles in carbon fibre composite laminatescitations
- 2022Advanced Processing and Machining of Tungsten and Its Alloyscitations
- 2022A Novel Low-Cost DIC-Based Residual Stress Measurement Devicecitations
- 2022Carbon fibre lattice strain mapping via microfocus Synchrotron X-ray diffraction of a reinforced compositecitations
- 2020An analysis of fatigue failure mechanisms in an additively manufactured and shot peened IN 718 nickel superalloycitations
- 2020Multi-scale digital image correlation analysis of in situ deformation of open-cell porous ultra-high molecular weight polyethylene foamcitations
- 2019Analysis of Fe(Se,Te) Films Deposited On Unbuffered Invar 36citations
- 2019Investigations into the interface failure of yttria partially stabilised zirconia - porcelain dental prostheses through microscale residual stress and phase quantificationcitations
- 2018Secondary Phases Quantification and Fracture Toughness at Cryogenic Temperature of Austenitic Stainless Steel Welds for High-Field Superconducting Magnets
- 2018Double Cathode Configuration for the Nb Coating of HIE-ISOLDE Cavities
- 2018Nanoscale residual stress depth profiling by Focused Ion Beam milling and eigenstrain analysiscitations
- 2017Eigenstrain reconstruction of residual strains in an additively manufactured and shot peened nickel superalloy compressor bladecitations
- 2016Full in-plane strain tensor analysis using the microscale ring-core FIB milling and DIC approachcitations
- 2016The effect of eigenstrain induced by ion beam damage on the apparent strain relief in FIB-DIC residual stress evaluationcitations
- 2016Mechanical microscopy of the interface between yttria-partially-stabilised zirconia and porcelain in dental prostheses
- 2015A state-of-the-art review of micron-scale spatially resolved residual stress analysis by FIB-DIC ring-core milling and other techniquescitations
- 2015A comparative transmission electron microscopy, energy dispersive x-ray spectroscopy and spatially resolved micropillar compression study of the yttria partially stabilised zirconia - porcelain interface in dental prosthesiscitations
- 2015A review of micro-scale focused ion beam milling and digital image correlation analysis for residual stress evaluation and error estimationcitations
- 2015Microscale resolution fracture toughness profiling at the zirconia-porcelain interface in dental prosthesescitations
- 2015An electron microscopy study of sintering in three dental porcelains
- 2015Tensile secondary creep rate analysis of a dental veneering porcelaincitations
- 2014Hierarchical modelling of in situ elastic deformation of human enamel based on photoelastic and diffraction analysis of stresses and strainscitations
- 2014Calculations of single crystal elastic constants for yttria partially stabilised zirconia from powder diffraction datacitations
- 2014Intragranular residual stress evaluation using the semi-destructive FIB-DIC ring-core drilling methodcitations
- 2014A study of phase transformation at the surface of a zirconia ceramic
- 2014Nano-scale mapping of lattice strain and orientation inside carbon core SiC fibres by synchrotron X-ray diffractioncitations
- 2014A critical comparison between XRD and FIB residual stress measurement techniques in thin filmscitations
Places of action
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thesis
Mechanical microscopy of the interface between yttria-partially-stabilised zirconia and porcelain in dental prostheses
Abstract
In recent decades, the high strength, high toughness and appealing aesthetics of Yttria-PartiallyStabilised Zirconia (YPSZ) has made this ceramic the material of choice for dental prostheses. During manufacture YPSZ copings are veneered with porcelain to match the appearance of natural teeth and to reduce wear. However, near-interface chipping of the veneer is observed as a persistent primary failure mode. Recent studies suggest that failure is associated with the mechanical and microstructural state within a few microns of the interface. This insight has provided the motivating driver for this study: to develop and implement new characterisation techniques to improve the understanding of the YPSZporcelain interface and thereby reduce failure rates.<br/>Microscale characterisation of the interface was performed using energy dispersive X-ray spectroscopy, Raman spectroscopy, X-ray Diffraction (XRD) and transmission electron microscopy. These studies indicated that YPSZ phase variation, elemental composition gradients and distinct microstructural features are present within 10 μm of the interface. Porcelain nanoscale voiding was found<br/>at the interface, and small angle neutron scattering confirmed that this is induced by tensile creep.<br/>High resolution (microscale) residual stress analysis was performed in YPSZ using XRD and Raman spectroscopy, and in porcelain using a new pair distribution function analysis technique. Crossvalidation of these results was performed using improved implementations of the ring-core focused ion<br/>beam milling and digital image correlation technique. The variation of Young’s modulus, yield strength and fracture toughness were determined using spatially resolved micropillar compression and splitting. Improved evaluation of the single-crystal stiffness of YPSZ was also performed using a new neutron diffraction based technique.<br/>The results of this analysis indicate a complex interaction within the first 50 μm of the YPSZporcelain interface which leads to a significant reduction in porcelain toughness and an increased propensity to fail at this location