Search Results - "Castelnau, O."

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    Additive layer manufacturing of titanium matrix composites using the direct metal deposition laser process by Pouzet, S., Peyre, P., Gorny, C., Castelnau, O., Baudin, T., Brisset, F., Colin, C., Gadaud, P.

    “…Titanium Matrix Composites (TMC's) containing various volume fractions of (TiB+TiC) particles have been deposited from powder feedstocks consisting of a blend…”
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    Influence of beam diameter on Laser Powder Bed Fusion (L-PBF) process by Sow, M.C., De Terris, T., Castelnau, O., Hamouche, Z., Coste, F., Fabbro, R., Peyre, P.

    Published in Additive manufacturing (01-12-2020)
    “…The use of large beams in the Laser Powder Bed Fusion (L-PBF) process has been receiving increasing attention for the past few years and may widen the…”
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    Modeling and simulation of laser shock waves in elasto-plastic 1D layered specimens by Lapostolle, L., Derrien, K., Morin, L., Berthe, L., Castelnau, O.

    “…The aim of this paper is to study the effect of microstructure heterogeneity upon elasto-plastic wave propagation generated during laser shot peening. We…”
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    Elastic anisotropy and yield surface estimates of polycrystals by Brenner, R., Lebensohn, R.A., Castelnau, O.

    “…Homogenization estimates based on the self-consistent scheme are customarily used to describe the plastic yielding of polycrystals. Such estimates of the…”
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    Estimation of stress in specimens loaded with ultrasonic fatigue machines by Jacquemain, V., Ranc, N., Cheuleu, C., Michel, V., Favier, V., Castelnau, O., Vinci, D., Thiaudiere, D., Mocuta, C.

    Published in International journal of fatigue (01-12-2021)
    “…•The largest deviation on frequency is caused by the uncertainty on Young's modulus.•Frequency deviations from machining are lower than that induced from…”
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    Accuracy of stress measurement by Laue microdiffraction (Laue‐DIC method): the influence of image noise, calibration errors and spot number by Zhang, F. G., Bornert, M., Petit, J., Castelnau, O.

    Published in Journal of synchrotron radiation (01-07-2017)
    “…Laue microdiffraction, available at several synchrotron radiation facilities, is well suited for measuring the intragranular stress field in deformed materials…”
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    Experimental characterization of the intragranular strain field in columnar ice during transient creep by Grennerat, F., Montagnat, M., Castelnau, O., Vacher, P., Moulinec, H., Suquet, P., Duval, P.

    Published in Acta materialia (01-05-2012)
    “…A digital image correlation (DIC) technique has been adapted to polycrystalline ice specimens in order to characterize the development of strain…”
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    Modelling capsizing icebergs in the open ocean by Bonnet, P, Yastrebov, V A, Queutey, P, Leroyer, A, Mangeney, A, Castelnau, O, Sergeant, A, Stutzmann, E, Montagner, J-P

    Published in Geophysical journal international (01-11-2020)
    “…Summary At near-grounded glacier termini, calving can lead to the capsize of kilometre-scale (i.e. gigatons) unstable icebergs. The transient contact force…”
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    Multiscale modeling of the elasto-plastic behavior of architectured and nanostructured Cu-Nb composite wires and comparison with neutron diffraction experiments by Gu, T., Medy, J.-R., Klosek, V., Castelnau, O., Forest, S., Hervé-Luanco, E., Lecouturier–Dupouy, F., Proudhon, H., Renault, P.-O., Thilly, L., Villechaise, P.

    Published in International journal of plasticity (01-11-2019)
    “…Nanostructured and architectured copper niobium composite wires are excellent candidates for the generation of intense pulsed magnetic fields (∼100T) as they…”
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    Effects of crystal preferred orientation on upper-mantle flow near plate boundaries: rheologic feedbacks and seismic anisotropy by Blackman, D.K., Boyce, D.E., Castelnau, O., Dawson, P.R., Laske, G.

    Published in Geophysical journal international (01-09-2017)
    “…Summary Insight into upper-mantle processes can be gained by linking flow-induced mineral alignment to regional deformation and seismic anisotropy patterns…”
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    Multiscale modeling of the elastic behavior of architectured and nanostructured Cu–Nb composite wires by Gu, T., Castelnau, O., Forest, S., Hervé-Luanco, E., Lecouturier, F., Proudhon, H., Thilly, L.

    “…Nanostructured and architectured copper niobium composite wires are excellent candidates for the generation of intense pulsed magnetic fields (> 90T) as they…”
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    Multiscale modeling of ice deformation behavior by Montagnat, M., Castelnau, O., Bons, P.D., Faria, S.H., Gagliardini, O., Gillet-Chaulet, F., Grennerat, F., Griera, A., Lebensohn, R.A., Moulinec, H., Roessiger, J., Suquet, P.

    Published in Journal of structural geology (01-04-2014)
    “…Understanding the flow of ice in glaciers and polar ice sheets is of increasing relevance in a time of potentially significant climate change. The flow of ice…”
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    Micromechanical modeling of the viscoplastic behavior of olivine by Castelnau, O., Blackman, D. K., Lebensohn, R. A., Ponte Castañeda, P.

    “…Efforts to couple mantle flow models with rheological theories of mineral deformation typically ignore the effect of texture development on flow evolution. The…”
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    Numerical simulations of texture development and associated rheological anisotropy in regions of complex mantle flow by Castelnau, O., Blackman, D. K., Becker, T. W.

    Published in Geophysical research letters (01-06-2009)
    “…The development of Lattice Preferred Orientations (LPO) within olivine aggregates under flow in the upper mantle leads to seismic and rheological (or…”
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    Effective viscoplastic behavior of polycrystalline aggregates lacking four independent slip systems inferred from homogenization methods; application to olivine by Detrez, F., Castelnau, O., Cordier, P., Merkel, S., Raterron, P.

    “…Polycrystalline aggregates lacking four independent systems for the glide of dislocations can deform in a purely viscoplastic regime only if additional…”
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    Microsecond time‐resolved X‐ray diffraction for the investigation of fatigue behavior during ultrasonic fatigue loading by Ors, T., Ranc, N., Pelerin, M., Michel, V., Favier, V., Castelnau, O., Mocuta, C., Thiaudière, D.

    Published in Journal of synchrotron radiation (01-09-2019)
    “…A new method based on time‐resolved X‐ray diffraction is proposed in order to measure the elastic strain and stress during ultrasonic fatigue loading…”
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    Determination of deviatoric elastic strain and lattice orientation by applying digital image correlation to Laue microdiffraction images: the enhanced Laue-DIC method by Zhang, F. G., Castelnau, O., Bornert, M., Petit, J., Marijon, J. B., Plancher, E.

    Published in Journal of applied crystallography (01-12-2015)
    “…A new method of determining the deviatoric elastic strain and lattice orientation from Laue microdiffraction images is presented. Standard data treatment…”
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    Texture Evolution and Associated Nucleation and Growth Mechanisms during Annealing of a Zr Alloy by Zhu, K.Y., Bacroix, B., Chauveau, T., Chaubet, D., Castelnau, O.

    “…The evolution of the crystallographic texture in a Zr-2Hf alloy has been followed during deformation, primary recrystallization, and subsequent normal grain…”
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