Search Results - "J.-Y. Buffiere"

In situ synchrotron tomography estimation of toughening effect by semi-ductile fibre reinforcement in a tungsten-fibre-reinforced tungsten composite system by Riesch, J., Buffiere, J.-Y., Höschen, T., di Michiel, M., Scheel, M., Linsmeier, Ch, You, J.-H.

“…Tungsten-fibre-reinforced tungsten composites (Wf/W) are supposed to enable enhanced toughness owing to extrinsic energy dissipation mechanisms such as…”
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Torsional fatigue mechanisms of an A357-T6 cast aluminium alloy by Serrano-Munoz, I., Shiozawa, D., Dancette, S., Verdu, C., Buffiere, J.-Y.

“…[Display omitted] The mechanisms controlling the fatigue response of an A357-T6 cast aluminium alloy under cyclic torsional loading are investigated. Surface…”
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Synchrotron diffraction study of dissolution and precipitation kinetics of hydrides in Zircaloy-4 by Zanellato, O., Preuss, M., Buffiere, J.-Y., Ribeiro, F., Steuwer, A., Desquines, J., Andrieux, J., Krebs, B.

“…► Dissolution and precipitation of Zr hydrides followed in situ using X-ray synchrotron diffraction. ► Fast kinetics of precipitation at 400 °C. ► Little…”
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Casting defects in structural components: Are they all dangerous? A 3D study by Serrano-Munoz, I., Buffiere, J.-Y., Verdu, C.

“…The influence of defects parameters (i.e., size, shape and location) on early crack nucleation in an A357-T6 cast aluminium alloy is studied by means of…”
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A phase field method for modeling anodic dissolution induced stress corrosion crack propagation by Nguyen, T-T., Bolivar, J., Shi, Y., Réthoré, J., King, A., Fregonese, M., Adrien, J., Buffiere, J-Y., Baietto, M-C.

“…•New phase field model for stress corrosion cracking.•Effects of both electrochemical and mechanical processes are considered.•Efficient finite element…”
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In Situ Experiments with X ray Tomography: an Attractive Tool for Experimental Mechanics by Buffiere, J. -Y., Maire, E., Adrien, J., Masse, J. -P., Boller, E.

“…This paper aims at illustrating the potential of X-ray tomography for studying the mechanical behaviour of materials through in situ experiments. Typical…”
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Three-dimensional in situ observations of short fatigue crack growth in magnesium by King, A., Ludwig, W., Herbig, M., Buffière, J.-Y., Khan, A.A., Stevens, N., Marrow, T.J.

“…Three-dimensional (3D) short fatigue crack growth behaviour in a cast magnesium alloy, Elektron 21, was studied using a combination of X-ray diffraction…”
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3-Dimensional analysis of fatigue crack fields and crack growth by in situ synchrotron X-ray tomography by Koko, A., Singh, S., Barhli, S., Connolley, T., Vo, N.T., Wigger, T., Liu, D., Fu, Y., Réthoré, J., Lechambre, J., Buffiere, J.-Y., Marrow, T.J.

“…•In situ three-dimensional observation of curved fatigue crack propagation.•Measurement of the three-dimensional crack shape and crack tip displacement…”
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Influence of surface and internal casting defects on the fatigue behaviour of A357-T6 cast aluminium alloy by Serrano-Munoz, I., Buffiere, J.-Y., Verdu, C., Gaillard, Y., Mu, P., Nadot, Y.

“…•Artificial defects of ∅≈2mm were used to induce internal failure.•The internal defects induce similar fatigue lives to those of a defect-free material.•These…”
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A new methodology based on X-ray micro-tomography to estimate stress concentrations around inclusions in high strength steels by Stiénon, A., Fazekas, A., Buffière, J.-Y., Vincent, A., Daguier, P., Merchi, F.

“…This work aims at improving the calculation of stress fields around non-metallic inclusions in high strength bearing steels. A new methodology is proposed,…”
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Influence of Pore Size and Crystallography on the Small Crack HCF Behavior of an A357-T6 Cast Aluminum Alloy by Serrano-Munoz, I., Dancette, S., Verdu, C., Buffiere, J.-Y.

“…The high-cycle fatigue, small crack propagation behavior of an A357-T6 cast aluminum alloy is investigated. Laboratory X-ray micro-computed tomography ( μ CT )…”
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Corner fatigue cracking behavior of hybrid laser AA7020 welds by synchrotron X-ray computed microtomography by Wu, S.C., Yu, C., Yu, P.S., Buffière, J.Y., Helfen, L., Fu, Y.N.

“…To elucidate the fatigue corner cracking behaviors related with gas pores of hybrid laser arc welded 7020–T651 alloys, both high-resolution in situ synchrotron…”
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Nanoscale zoom tomography with hard x rays using Kirkpatrick-Baez optics by Mokso, R., Cloetens, P., Maire, E., Ludwig, W., Buffière, J.-Y.

“…To overcome the limitations in terms of spatial resolution and field of view of existing tomography techniques, a hard x-ray projection microscope is realized…”
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Microtomographic study and finite element analysis of the porosity harmfulness in a cast aluminium alloy by Vanderesse, N., Maire, É., Chabod, A., Buffière, J.-Y.

“…► The fatigue behaviour of cast aluminium samples is studied. ► Microtomography is used in combination with finite element analysis. ► Two analysis of the…”
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New opportunities for 3D materials science of polycrystalline materials at the micrometre lengthscale by combined use of X-ray diffraction and X-ray imaging by Ludwig, W., King, A., Reischig, P., Herbig, M., Lauridsen, E.M., Schmidt, S., Proudhon, H., Forest, S., Cloetens, P., Roscoat, S. Rolland du, Buffière, J.Y., Marrow, T.J., Poulsen, H.F.

“…Non-destructive, three-dimensional (3D) characterization of the grain structure in mono-phase polycrystalline materials is an open challenge in material…”
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Numerical methods for stress intensity factor ΔK calculations of fretting cracked interface by de Pannemaecker, A., Fouvry, S., Berthel, B., Buffiere, J.-Y.

“…Plain fretting experiments generate cracks under partial slip conditions. The maximum projected crack length (bp) related to the fretting crack achieved after…”
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Analysis and Artifact Correction for Volume Correlation Measurements Using Tomographic Images from a Laboratory X-ray Source by Limodin, N., Réthoré, J., Adrien, J., Buffière, J.-Y., Hild, F., Roux, S.

“…The effects of three artifacts (reconstruction, beam hardening and temperature of the X-ray tube) associated with the use of a lab tomograph are analyzed in…”
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Three-dimensional characterization of fatigue-relevant intermetallic particles in high-strength aluminium alloys using synchrotron X-ray nanotomography by Nizery, E., Proudhon, H., Buffiere, J.-Y., Cloetens, P., Morgeneyer, T.F., Forest, S.

“…Second-phase particles and small porosities are known to favour fatigue crack initiation in high-strength aluminium alloys 2050-T8 and 7050-T7451. Using…”
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Crack bridging in as-fabricated and embrittled tungsten single fibre-reinforced tungsten composites shown by a novel in-situ high energy synchrotron tomography bending test by Riesch, J., Buffiere, J.-Y., Höschen, T., Scheel, M., Linsmeier, Ch, You, J.-H.

“…•Novel 4pt bending tests in combination with in-situ high energy synchrotron tomography.•Tungsten single fibre-reinforced tungsten composite model systems in…”
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Crack initiation processes in acrylic bone cement by Sinnett-Jones, P. E., Browne, M., Moffat, A. J., Jeffers, J. R. T., Saffari, N., Buffière, J.-Y., Sinclair, I.

“…A major constraint in improving the understanding of the micromechanics of the fatigue failure process and, hence, in optimizing bone cement performance is…”
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