Fully-coupled electro-magneto-elastic behavior of unidirectional multiphased composites via finite-volume homogenization...
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Fully-coupled electro-magneto-elastic behavior of unidirectional multiphased composites via finite-volume homogenization...
The effective and localized electro-magneto-elastic behavior of periodic unidirectional composites is investigated in this work. Instead of adopting the classical micromechanics models or variational principle-based finite-element (FE) techniques, the finite-volume direct averaging micromechanics (FVDAM) is extended to fulfill this task by incorpor...
Plazmatické modifikace vláknité výztuže používané v cementových kompozitních materiálech / Plasma Modifications of Reinf...
Práce se zabývá plazmatickými modifikacemi skleněných a polymerových vláken, která se používají jako výztuž v kompozitních materiálech ve stavebnictví. Cílem modifikací bylo aktivovat a zdrsnit povrhy vláken a zaručit tak jejich silnou chemickou i fyzikální interakci s vápennou a cementovou matricí. Pro tyto účely bylo využito studené indukované pl...
Accounting for capillary effects in level-set based Finite Elements modelling of impregnation in fibrous media
Accounting for surface tension effects is of major interest in many fields in engineering. More specifically, in the field of LCM composite processing, surface tension driven phenomena control the impregnation of liquid resin into fibrous preforms. In the work described here, a numerical method able to deal with a general bi-fluid model integrating...
Analyse et visualisation de la géométrie des matériaux composites à partir de données d’imagerie 3D
Le sujet du projet de thèse réalisée en cotutelle entre Laboratoire Roberval à l'Université de Technologie de Compiègne et le Centre de Composites à Haute Performance d'École Polytechnique de Montréal porté sur une proposition de l'architecture du deep learning avec sémantique pour la création automatisée des modèles de la microstructure de matéria...
Soft and hard anisotropic interface in composite materials
For a large class of composites, the adhesion at the fiber–matrix interface is imperfect i.e. the continuity conditions for displacements and often for stresses is not satisfied. In the present contribution, effective elastic moduli for this kind of composites are obtained by means of the Asymptotic Homogenization Method (AHM). Interaction between ...
Magnetic clamping structures for the consolidation of composite laminates
Vacuum bags in conjunction with autoclaves are currently employed to generate the consolidation pressures and temperatures required to manufacture aerospace level composites. As the scale of continuous fiber composite structures increases autoclaving becomes prohibitively expensive or impossible. The objective of this work is to develop flexible ma...
Preparation of electrospun composite fibers based on PS-PI-PS/CdSxSe1-x nanoparticles
Thesis (Master)--İzmir Institute of Technology, Chemistry, İzmir, 2011 / Includes bibliographical references (leaves: 37-39) / Text in English; Abstract: Turkish and English / x, 39 leaves / Polymeric fibrous films were prepared based on polystyrene-b-polyisoprene-bpolystyrene triblock copolymer (SIS) and CdSxSe1-x nanoparticles by electrospinning ...
Melt spinning of continuous filaments by cold air attenuation
Traditionally ultrafine fibers below 1 dpf are produced by extrusion followed by mechanical drawing. A modified melt spinning apparatus with high-speed air nozzle was designed and fabricated to produce continuous polypropylene filaments by cold air drawing only. With this setup, the fiber is quenched and simultaneously attenuated by a symmetric col...
Etude expérimentale et modélisation du comportement en fatigue multiaxiale d'un polymère renforcé pour application autom...
Cette thèse contribue à la compréhension du comportement en fatigue des thermoplastiques renforcés par des fibres de verre courtes. Deux différents matériaux sont étudiés : Un mélange de polybutylène téréphtalate et polyéthylène téréphtalate (PBT+PET GF30) et un polyamide 66 (PA66 GF35). Les enjeux scientifiques de la thèse concernent les chargemen...
