La mise en forme de renforts composites est une étape qui met en jeu les comportements complexes de la déformabilité du renfort et qui se doit d’être maitrisée. Dans cet article, nous étudions la déformabilité des tresses triaxiales en tant que renfort de composite. Le glissement des mèches dans la direction longitudinale des mèches est un phénomèn...
POPCOM Composites Advanced Manufacturing Platform @ IMT LIlle Douai : Original facilities for development and industrialization of structural composites and reinforced polymers, embracing the whole chain of product life cycle … the ‘’Swiss Army Knife’’ of composites.
In situ tensile tests in a scanning electron microscope (SEM) have been conducted on a 8-layer 5-harness satin carbon fibre and epoxy matrix composite to observe the first stages of damage at the scale of fibres and matrix. A speckle pattern based on a suspension of alumina particles was applied onto the surface of the specimen to facilitate the us...
Published in Applied Composite Materials
Elastic properties of laminate composites based Carbone Nanotubes (CNTs), used in military applications, were estimated using homogenization techniques and compared to the experimental data. The composite consists of three phases: T300 6k carbon fibers fabric with 5HS (satin) weave, baseline pure Epoxy matrix and CNTs added with 0.5%, 1%, 2% and 4%...
Published in Journal of Polymers and the Environment
A number of attempts have been made to recycle cotton/polyester blend woven fabrics after use; however, most of these fabrics are disposed of in landfills. Major part of these blend fabrics are not recycled due to complexity of the fibre arrangement and cannot be separated economically. This study shows that these discarded woven fabrics could be d...
Multiscale modeling techniques for composites require input for the mechanical properties of the constituent materials (fibres and matrix). The transverse elastic properties of the fibres are often unknown because no test standard exists to determine them. One can, however, reverse engineer the fibre properties from the 3D homogenized elastic tenso...
Mesoscopic model has been proven to impose crucial influence on predicting the damage and failure behavior of textile composites. In classical mesoscopic models, the section of yarn is usually simplified as circular, lenticular, ellipsoidal or more sophisticated shapes defined by power ellipse. A numeric tool is proposed in this work to reconstruct...
