Vitaly Koissin

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The paper addresses the experimental investigation of the unit cell architecture in a structurally stitched multilayer carbon-fibre preform. Each layer is a multiaxial multiply non-crimp fabric (NCF) knit with a non-structural stitching. The term “structural” presumes here that the stitching yarn does not only consolidate the plies (as the non-structural(More)
A review is presented on the testing and mechanical properties of continuous fibre reinforced composites modified with nanotubes or nanofibres either dispersed in the resin or grown on the microfibres. The nano-level cross-links are shown to be able to (1) increase the fibre/matrix interfacial strength, (2) reduce the inter-fibre crack growth, and (3)(More)
Correct modelling of textile reinforcement is an important factor as for the composite performance during its manufacturing as well as for the service life. In this study, experimental data, generalized geometrical models, and FE analysis are presented for structurally stitched preforms. The term 'structural' presumes here that the stitching yarn does not(More)
The morphology and chemical composition of carbon nanofibers in situ grown on a large carbon-fiber woven fabric are studied using SEM measurements, X-ray Diffraction, X-ray Flourescence, and X-ray Photoelectron Spectroscopy. Results show that nanofibers can have a density and a morphology potentially advantageous for application in polymer-matrix(More)
Internal geometry of a textile reinforcement is an important factor of the reinforcement performance during the composite manufacturing and service life. In this article, generalized geometrical models of structural stitching loops are presented for the sewing, tufting, and dual-needle stitching methods. The term 'structural' presumes here that the(More)
TEXTILE COMPOSITES: ITOOL PROJECT BJORN VAN DEN BROUCKE, KLAUS DRECHSLER, VERA HANISCH, DANIEL HARTUNG, DMITRY S. IVANOV, VITALY E. KOISSIN, STEPAN V. LOMOV, PETER MIDDENDORF, ANTONIO MIRAVETE, MARINUS SCHOUTEN2, JAN STUVE, NARCISO TOLOSANA, IGNAAS VERPOEST, VOLKER WITZEL Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven,(More)
This article addresses the experimental investigation and modelling of the uneven fibre distribution inside yarns of a textile composite. The test data is given for the tri-axial carbon-fibre braid; a considerable irregularity is revealed for the fibre distribution along and across the yarns. The importance of this effect for the damage resistance is(More)
Elastic wave mixing using an immersion method has shown effective monitoring and scanning capabilities when applied to thermoplastic ageing, epoxy curing, and non-destructive testing. In water, excitation and reception of waves do not require physical contact between the tools and the specimen, making the acquisition of high-resolution C-scans possible. The(More)
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