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Peer Reviewed
See detailAnisocoria and Cerebro-Vascular Diseases
Martin, Didier ULg

Conference (2006, November 22)

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See detailAnisotropic AC behavior of multifilamentary Bi-2223/Ag tapes
Fagnard, Jean-François ULg; Vanderbemden, Philippe ULg; Cloots, Rudi ULg et al

in IEEE Transactions on Applied Superconductivity (2003), 13(2, Part 3), 2976-2979

In this communication, we report on the anisotropy of the superconducting properties of multifilamentary Bi-based tapes experimentally investigated by AC magnetic susceptibility measurements. The ... [more ▼]

In this communication, we report on the anisotropy of the superconducting properties of multifilamentary Bi-based tapes experimentally investigated by AC magnetic susceptibility measurements. The susceptibility X = X' - jX" was measured using a commercial system and a couple of orthogonal pick-up coils. The X'' vs. temperature curves were shown to exhibit two peaks. The smaller of the peaks, occurring near T = 72 K, was only visible for particular field directions and within a given frequency window. Such results point out the role played by the phase difference between the applied magnetic field and the internal magnetic field seen by the filaments. (C) 2003 IEEE. [less ▲]

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See detailAnisotropic and feature sensitive triangular remeshing using normal lifting
Nivoliers, Vincent; Lévy, Bruno; Geuzaine, Christophe ULg

in Journal of Computational and Applied Mathematics (2015), 289

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See detailAnisotropic avalanches and flux penetration in patterned superconductors
Gheorghe, D. G.; Menghini, M.; Wijngaarden, R. J. et al

in Physica C: Superconductivity (2006), 437-38

Both for a fundamental understanding of the flux penetration process and for technical applications, the role of artificial pinning sites (such as antidots) in superconductors generates a lot of interest ... [more ▼]

Both for a fundamental understanding of the flux penetration process and for technical applications, the role of artificial pinning sites (such as antidots) in superconductors generates a lot of interest. We perform magneto-optical imaging experiments on type-II Pb thin films patterned with square arrays of square antidots and square arrays of rectangular antidots and blind holes. We demonstrate that a square lattice of rectangular antidots can lead to similar anisotropy in flux penetration and critical current as a rectangular lattice of square antidots. In addition we show how thermo-magnetic avalanches can be guided-and hence to a certain extend controlled-by such holes. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

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See detailAnisotropic behaviour in the magnetic field dependence of the low temperature electrical resistance of calcium-doped lanthanum manganate thin films grown by RF magnetron sputtering
Vertruyen, Bénédicte ULg; Dusoulier, Laurent; Fagnard, Jean-François ULg et al

in Journal of Magnetism and Magnetic Materials (2004), 280(2-3), 264-272

We report about the magnetoresistive properties of calcium-doped lanthanum manganate thin films grown by RF magnetron sputtering on single crystalline LaAiO(3) and MgO substrates. Two orientations of the ... [more ▼]

We report about the magnetoresistive properties of calcium-doped lanthanum manganate thin films grown by RF magnetron sputtering on single crystalline LaAiO(3) and MgO substrates. Two orientations of the magnetic field with respect to the electrical current have been studied: (i) magnetic field in the plane of the film and parallel to the electrical current, and (ii) magnetic field perpendicular to the plane of the film. The film grown on LaAlO3 is characterised by an unusual magneto resistive behaviour when the magnetic field is applied perpendicular to the film plane: the appearance of two bumps in the field dependence of the resistance is shown to be related to the occurrence of anisotropic magneto resistive effects in manganate films. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

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See detailAnisotropic continuum damage model coupled to viscoplasticity for a pressure dependent alveolar bone remodeling law
Mengoni, Marlène ULg; Ponthot, Jean-Philippe ULg

in National Congress on Theoretical and Applied Mechanics (2009, May)

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See detailAnisotropic damage model for microcracked materials
Levasseur, Séverine ULg

Diverse speeche and writing (2012)

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See detailAnisotropic damage model with initial stresses for microcracked materials
Levasseur, Séverine ULg; Collin, Frédéric ULg; Charlier, Robert ULg et al

in Fifth International Conference on Advanced COmputational Methods in ENgineering (ACOMEN 2011) (2011)

In a recent study (Levasseur et al., 2010), we proposed a class of isotropic damage models which account for initial stresses. The present paper extends this approach to anisotropic damage due to growth ... [more ▼]

In a recent study (Levasseur et al., 2010), we proposed a class of isotropic damage models which account for initial stresses. The present paper extends this approach to anisotropic damage due to growth of an arbitrarily penny-shaped microcracks system. The basic principle of the upscaling technique in the presence of initial stress is first recalled. Then, we derive a closed-form expression of the elastic energy potential corresponding to a system of arbitrarily oriented microcracks. Thanks to the investigation of the influence of initial stresses on the material response under non monotonous loading paths, it is shown how the coupling between initial stresses and damage is strongly dependent of the microcracks density and orientation. In case of a particular distribution of microcracks orientation, described by a second order damage tensor, this model corresponds to a generalization of the macroscopic damage model of Halm and Dragon (1996), for which a physically-based interpretation can be proposed. [less ▲]

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See detailAnisotropic elasto-plastic finite element analysis using a stress-strain interpolation method based on a polycrystalline model
Habraken, Anne ULg; Duchene, Laurent ULg

in International Journal of Plasticity (2004), 20(Issue 8-9), 1525-1560

This paper describes a stress–strain interpolation method to model the macroscopic anisotropic elasto-plastic behavior of polycrystalline materials. Accurate analytical descriptions of yield loci derived ... [more ▼]

This paper describes a stress–strain interpolation method to model the macroscopic anisotropic elasto-plastic behavior of polycrystalline materials. Accurate analytical descriptions of yield loci derived from crystallographic texture [Int. J. Plasticity 19 (2003) 647; J. Phys. IV France 105 (2003) 39] are an interesting alternative to finite element models, where the macroscopic stress is provided by an averaging of microscopic stresses computed on a set of representative crystallites [Acta Metal 22 (1985) 923; Int. J. Plasticity 5 (1989) 67]. The parameters of the analytical functions modeling the yield locus are identified by comparison with a high number of stress tensors computed, for instance, by the well-known Taylor model [J. Inst. Metal 62 (1938) 307]. This identification method depends on the crystallographic texture and should be applied each time that the plastic strain has induced a significant texture evolution. The stress–strain interpolation method accurately describes the anisotropic material behavior in a narrow stress direction defined by only five stress points. The cost of texture updating is then greatly reduced compared to a full analytical function of the yield locus. After the mathematical description of the stress–strain interpolation method, its validity is demonstrated on two non-radial strain paths. The simulations of a deep drawing experiment allow comparing model predictions and measurements. Accuracy and CPU time of the interpolation stress–strain method are judged against two other models, respectively based on a complete analytical yield locus and on the averaging of crystallite stresses. [less ▲]

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See detailAnisotropic elastoplastic model based on texture
Habraken, Anne ULg; Duchene, Laurent ULg; Godinas, André et al

in Handbook of materials behavior models (2001)

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See detailAnisotropic Elastoplastic Model Based on Texture
Habraken, Anne ULg

in Lemaitre Handbook of Materials Behavior Models (2001)

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See detailAnisotropic field percolation and high current density in 2212 Bi-based substituted with Dy bulk magnetically textured composite ceramics
Vanderbemden, Philippe ULg; Vanderschueren, Hyacinthe ULg; Stassen, Sophie et al

in Matsushita, T.; Yamafuji, K. (Eds.) Proceedings of the 8th International Workshop on Critical Currents in Superconductors (1996)

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See detailAnisotropic hydromechancial modelling of HGA field-scale experiment in Opalinus Clay
Levasseur, Séverine ULg; Collin, Frédéric ULg; François, Bertrand et al

Conference (2012)

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See detailAnisotropic Orientations of Polarisations from quasar light
Pelgrims, Vincent ULg

Conference (2013, September)

Presentation of the foundations of a new statistical test dedicated to the polarisation orientations analysis.

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See detailAnisotropic resistivity tensor of melt-cast Bi2212 superconductors from QTA
Dellicour, Aline ULg; Vertruyen, Bénédicte ULg; Lutterotti, Luca et al

Conference (2014, August)

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See detailAnisotropic scaling in YBa2Cu3O7 crystals with columnar defects
Silhanek, Alejandro ULg; Civale, L.

in Journal of Low Temperature Physics (2004), 135(1-2), 157-160

We explore the interplay between the mass anisotropy and the uniaxial pinning of tilted columnar defects (CD) in a YBa2Cu3O7 single crystal. At high temperatures T and fields H a sharp peak in the ... [more ▼]

We explore the interplay between the mass anisotropy and the uniaxial pinning of tilted columnar defects (CD) in a YBa2Cu3O7 single crystal. At high temperatures T and fields H a sharp peak in the irreversible magnetization M-i at the direction of the tracks signals the presence of the CD. At low T such a peak is not observed, and the influence of the CD appears only as a perturbation to the angular dependence due to the anisotropy. We show that at low T and high H the uniaxial effects due to CD can be recovered by performing an anisotropic rescaling. As expected, this scaling fails at low H. [less ▲]

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See detailAnisotropic yield locus of ultrafine-grained aluminium produced by Equal Channel angular extrusion
El Houdaigui, Fouad; Duchene, Laurent ULg; Habraken, Anne ULg et al

in Onate, E.; Owen, D. R. J. (Eds.) Proceedings of the VIII International Conference on Computational Plasticity (COMPLAS VIII) (2005)

Macroscopic tensile, compression and torsion tests have been performed as well as texture measurements. Based on these data a phenomenological yield locus has been defined to describe the behaviour of an ... [more ▼]

Macroscopic tensile, compression and torsion tests have been performed as well as texture measurements. Based on these data a phenomenological yield locus has been defined to describe the behaviour of an ultrafine-grained aluminum obtained by ECAE. [less ▲]

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See detailAnisotropie de la suceptibilité magnétique dans une intrusion composite de la suite charnockitique: l'apophyse du massif stratiforme de Bjerkreim-Sokndal (Rogaland, Norvège méridionale)
Bolle, Olivier ULg; Diot, Hervé; Duchesne, Jean-Clair ULg

in Comptes Rendus de l'Académie des Sciences. Série II, Mécanique, Physique, Chimie, Sciences de l'Univers, Sciences de la Terre (1997), 325

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See detailAnisotropies from polarization of quasars
Pelgrims, Vincent ULg

Poster (2014, May)

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See detailAnisotropy and tension-compression asymmetry modeling of the room temperature plastic response of Ti-6A1-4V
Tuninetti, Victor; Gilles, Gaëtan ULg; Pardoen, Thomas et al

in International Journal of Plasticity (2015), 67

The mechanical behavior of the alloy Ti-6A1-4V is characterized using uniaxial tension, uniaxial compression, simple shear and place strain tests in three orthogonal material directions. The experimental ... [more ▼]

The mechanical behavior of the alloy Ti-6A1-4V is characterized using uniaxial tension, uniaxial compression, simple shear and place strain tests in three orthogonal material directions. The experimental results reveal tension/compression asymmetry, anisotropic yielding and anisotropic strain-hardening. These features are incorporated into an elasto-plastic constitutive law based on the macroscopic orthotropic yield criterion "CPB06" adapted to hexagonal metals. A new identification method for the yield criterion parameters is proposed by inverse modeling of the axial strain field compression specimens in the three orthogonal directions of the material. The sensitivity of different sets of material parameters to the identification method is also analysed and the capacity of the model to accurately predict the forces and displacement field is discussed. A validation of the best set of identified CPB06material parameters is performed by comparing the load-displacement curves in different loading directions for tensile tests on notched round bars with different levels of stress triaxiality and for compression tests on elliptical cross-section specimens, both tests involving multiaxial strain fields and large deformations. [less ▲]

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