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ORBi Open Repository and Bibliography (300.356 recursos)

In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Engineering, computing & technology => Materials science & engineering

Mostrando recursos 1 - 20 de 51

  1. ETUDE EXPERIMENTALE DE L’INFLUENCE DE LA DEPRESSION MECANIQUE SUR LE TRANSPORT ET LE COMPORTEMENT RHEOLOGIQUE DU MUCUS BRONCHIQUE SYNTHETIQUE DANS UNE TRACHEE ARTIFICIELLE.

    Benkoussas, Hana; Seyssiecq, Isabelle; Poncet, Sebastien
    Peer reviewed

  2. A stochastic 3-scale method to predict the thermo-elastic behaviors of polycrystalline structures

    Wu, Ling; Lucas, Vincent; Golinval, Jean-Claude; Paquay, Stéphane; Noels, Ludovic
    The purpose of this work is to upscale material uncertainties in the context of thermo-elastic response of polycrystalline structures. The probabilistic behavior of micro-resonators made of polycrystalline materials is evaluated using a stochastic multi-scale approach defined using the following methodology. 1. Stochastic volume elements (SVEs) [1] are defined from Voronoi tessellations using experimental measurements of the grain size, orientation, and surface roughness [2]; 2. Mesoscopic apparent thermo-elastic properties such as elasticity tensor, thermal conductivity tensor, and thermal dilatation tensor are extracted using a coupled homogenization theory [3, 4] applied on the SVE realizations; 3. A stochastic model of the homogenized properties extracted from Voronoi...

  3. Generation of unidirectional composite stochastic volume elements from micro-structural statistical information

    Wu, Ling; Bidaine, Benoit; Major, Zoltan; Nghia Chung, Chi; Noels, Ludovic
    The purpose of this work is to generate Stochastic Volume Element (SVE) of unidirectional composites using statistical information obtained from imaging technique in order to study the effect of the micro-structure uncertainty on the meso-scale behavior. When considering a homogenization-based multiscale approach, the material properties are obtained at each integration point of a macro-structure from the resolution of a micro-scale boundary value problem. When the separation of scales holds, the macro-point is viewed at the micro-level as the center of a Representative Volume Element (RVE). However, for composite materials which suffer from a large scatter in their constituent properties and microstructure, the...

  4. LCM of construction waste towards circular economy of buildings: VALDEM project

    Roy, Aubin; Groslambert, Sylvie; Pasquet, Vanessa; Léonard, Angélique
    From resource prospective, building and construction sector is responsible for more than third of global resource consumption, including 12% of the fresh water use and its generation of solid waste is estimated to be 40% of the total waste volume. At European level, construction and demolition waste is the largest waste stream representing one third of all waste produced in EU. Therefore the resource efficiency and management is crucial in building construction. A very significant part of the Construction and Demolition Waste (CDW) is not recycled today. Also a very limited part is used as a recycled content in the...

  5. Détermination des propriétés physico-mécaniques et de durabilité d'un lot de planches de hêtre traitées thermiquement

    Pollet, Caroline; Hebert, Jacques; Jourez, Benoît
    La scierie Scidus est intéressée de caractériser la qualité de son bois de hêtre traité thermiquement. Une étude a été mise en place au LTB en collaboration avec l’Ulg dans le cadre d'une colaboration avec la scierie Scidus d'Etalle. Les objectifs de cette étude sont de déterminer l’effet du traitement sur les propriétés physico-mécaniques usuelles et d’évaluer la durabilité conférée des bois récemment traités.

  6. Effects of High Solidification Rates on Segregations and Solid Phase Transformations in High Speed Steels

    Tchuindjang, Jérôme Tchoufack; Sinnaeve, Mario; Lecomte-Beckers, Jacqueline
    Peer reviewed

  7. Development of functionalized materials through sol-gel route for applications in catalysis and surface protection

    Léonard, Géraldine
    In this work, materials have been produced by sol-gel route. This synthesis way has been used for immobilization on a support of a function focused on green chemistry. The different functions are related with different applications that allow to illustrate the versatility and the flexibility of this sol-gel process. The two applications are: - Photocatalysis: Synthesis of material with photocatalytic property or with an additional property - Cyclocarbonation: Synthesis of an immobilized catalyst for polyurethane production through a green process The first application concerns the use of a photocatalyst that allows to degrade volatile organic compounds (VOC). The main photocatalyst is TiO2. It has been studied as a powder...

  8. Advanced oxidative treatment for waste water contamined by pharmaceutical products

    Belet, Artium
    Peer reviewed

  9. Effect of solution treatment on the fracture mechanisms of AlSi10Mg parts produced by Selective Laser Melting

    Delahaye, Jocelyn; Mertens, Anne; Dedry, Olivier; Rigo, Olivier; Vertruyen, Bénédicte; Lecomte-Beckers, Jacqueline; Habraken, Anne
    Al alloy AlSi10Mg processed by Selective Laser Melting (SLM) displays high hardness and tensile strength due to its very fine eutectic microstructure [1]. However, as-built material exhibits low ductility which is detrimental for applications where a high resilience is needed. To overcome this issue, solution heat treatment can be applied to soften and ductilize the material [2]. The very fine eutectic microstructure then turns into a dispersion of coarse globular Si precipitates. The distribution of Si precipitates seems to play a role in the fracture mechanism in as-built as well as solutionized tempers, but this effect is not yet fully...

  10. Effect of solution treatment on the fracture mechanisms of AlSi10Mg parts produced by Selective Laser Melting

    Delahaye, Jocelyn; Mertens, Anne; Dedry, Olivier; Rigo, Olivier; Vertruyen, Bénédicte; Lecomte-Beckers, Jacqueline; Habraken, Anne; Delahaye, Jocelyn
    Al alloy AlSi10Mg processed by Selective Laser Melting (SLM) displays high hardness and tensile strength due to its very fine eutectic microstructure [1]. However, as-built material exhibits low ductility which is detrimental for applications where a high resilience is needed. To overcome this issue, solution heat treatment can be applied to soften and ductilize the material [2]. The very fine eutectic microstructure then turns into a dispersion of coarse globular Si precipitates. The distribution of Si precipitates seems to play a role in the fracture mechanism in as-built as well as solutionized tempers, but this effect is not yet fully...

  11. Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

    Mendoza Gallego, Carlos; Gonzalez, Zoilo; Gordo, Elena; Ferrari, Begoña; Castro, Yolanda
    Peer reviewed

  12. Interactions between Zn2+ or ZnO with TiO2 to produce an efficient photocatalytic, superhydrophilic and aesthetic glass

    Léonard, Géraldine; Pàez Martinez, Carlos; Ramirez, Alfonso; Mahy, Julien; Heinrichs, Benoît
    Peer reviewed

  13. Interactions between Zn2+ or ZnO with TiO2 to produce an efficient photocatalytic, superhydrophilic and aesthetic glass

    Léonard, Géraldine; Pàez Martinez, Carlos; Ramirez, Alfonso; Mahy, Julien; Heinrichs, Benoît
    Peer reviewed

  14. A 2D and 3D thermal model of powder injection laser cladding

    Tomé Jardin, Ruben Antonio; Tran, Hoang Son; Hashemi, Seyedeh Neda; Lecomte-Beckers, Jacqueline; Carrus, Raoul; Habraken, Anne
    Peer reviewed

  15. Experimenrtal study of methods to increase the shielded volume in passive superconducting magnetic screens

    Wera, Laurent
    This thesis is dedicated to the experimental study of methods to increase the shielded volume in passive magnetic shields made of high temperature superconductors (HTS). Two main approaches are investigated. The first approach is to study how the size of the shield can be increased. The second is to study how the shielded volume can be extended in a shield of given size. In the first approach, we study how large-scale or scalable magnetic shields could be obtained. Scalability means the possibility of building magnetic shields of various dimensions by keeping the same fabrication technique. First, we study in detail the...

  16. Experimental study of methods to increase the shielded volume in passive superconducting magnetic screens

    Wera, Laurent
    This thesis is dedicated to the experimental study of methods to increase the shielded volume in passive magnetic shields made of high temperature superconductors (HTS). Two main approaches are investigated. The first approach is to study how the size of the shield can be increased. The second is to study how the shielded volume can be extended in a shield of given size. In the first approach, we study how large-scale or scalable magnetic shields could be obtained. Scalability means the possibility of building magnetic shields of various dimensions by keeping the same fabrication technique. First, we study in detail the...

  17. Study of High Speed Steel deposits produced by Laser cladding, Microstructure – Wear – Thermal model

    Hashemi, Seyedeh Neda

  18. Catalytic reforming of biomass gasification tars with bimetallic catalysts

    Wolfs, Cédric; Claude, Vincent; Lambert, Stéphanie
    Peer reviewed

  19. Optimization of hydroxyapatite synthesis via sol-gel process for bone reconstruction application

    Tilkin, Rémi; Regibeau, Nicolas; Grandfils, Christian; Lambert, Stéphanie
    Peer reviewed

  20. Bioinspired redox-active catechol-bearing polymers as ultra-robust organic cathodes for lithium storage

    Patil, Nagaraj; Aqil, Abdelhafid; Ouhib, Farid; Admassie, Shimelis; Inganäs, Olle; Jérôme, Christine; Detrembleur, Christophe
    Peer reviewed

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