Processing,characterisation and rheology of transparent concentrated fibre-bundle suspensions |
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Authors: | Pierre Dumont Jean-Pierre Vassal Laurent Orgéas Véronique Michaud Denis Favier Jan-Anders E Månson |
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Institution: | (1) Laboratoire de Technologie des Composites et Polymères (LTC), école Polytechnique Fédérale de Lausanne (EPFL), Station 12, CH-1015 Lausanne, Switzerland;(2) Laboratoire Sols-Solides-Structures (3S), CNRS - Universités de Grenoble (INPG-UJF), BP 53 38041 Grenoble cedex 9, France |
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Abstract: | Highly concentrated planar fibre-bundle suspensions with a transparent PMMA matrix were processed with various initial bundle
contents and orientations. They were submitted to simple compression and plane strain compression deformation modes. First
rheological measurements are presented. They highlight the role of the bundle content and orientation on recorded stress levels.
The transparent matrix allows the observation of fibrous microstructures before and after compressions: The in-plane deformation
of bundles (flattening and bending) as well as the evolution of their orientation are analysed and discussed.
This paper was presented at the 3rd Annual European Rheology Conference (AERC) 2006, held in Hersonisos, Crete, Greece, April
27–29, 2006. |
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Keywords: | Fibre suspension Compression rheometry Flow visualisation Flow-induced orientation |
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