| 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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article
Tensile secondary creep rate analysis of a dental veneering porcelain
Abstract
<p>Near-interface chipping of the porcelain veneer is now widely accepted as the primary failure mode of Yttria Partially Stabilised Zirconia (YPSZ) prosthesis. The origin of these failures is believed to be the complex interaction between YPSZ phase transformation, thermal expansion mismatch and other microstructural effects which induce high magnitude residual stresses within the first few microns of the interface. Recent studies have also provided evidence that these stresses, in combination with the applied sintering temperatures, are sufficient to induce tensile creep (and the associated voiding damage) within the near interface porcelain region. In order to improve understanding of this creep rate behaviour, tensile creep has been performed on representative dental feldspathic porcelain (Vitablocs<sup>®</sup> Mark II for Cerec<sup>®</sup>) at the temperatures (650-800 °C in 50 °C increments) and stresses (50-125 MPa in 25 MPa increments) typically encountered in the near interface porcelain. Limitations on porcelain sample size meant that conventional ceramic secondary creep rate testing could not be implemented in this study and therefore a new approach based on applying multiple stresses and temperatures to a single sample was developed. The four values of activation energy and stress rate exponent determined in this study were found to be consistent to within the 95% confidence intervals of each value. Average values and 95% confidence intervals for each parameter were determined to be Q = 243.0 ± 3.1 kJ mol<sup>- 1</sup> and n = 1.32 ± 0.08. These values compare well with published values of creep rate behaviour in silica and alumina based ceramics. The quantitative values obtained in this study form a foundation for future studies into tensile creep induced voiding in porcelain as well as facilitating the development of improved models of the YPSZ-porcelain interface. The new single sample, tensile creep experimental approach also has potential for use in ceramic tensile creep testing of samples of limited size.</p>