Concept

Enroulement filamentaire

Publications associées (68)

Low stress acrylated hyperbranched polymers

The objective of this study was to investigate the behavior of highly functional acrylates, during isothermal ultraviolet (UV) curing. The materials included a pentafunctional acrylate and two acrylated hyperbranched polymers, one with a stiff polyester co ...

EPFL2006

Dynamic properties of sandwich structures with integrated shear-thickening fluids

Véronique Michaud, Pierre-Etienne Bourban, John Christopher Plummer, Christian Fischer, Sylvia Aviva Braun

The integration of shear-thickening fluids (STFs) into composite structures has been investigated with the aim of tuning part stiffness and damping capacity under dynamic deformation. Results from oscillatory rheological measurements for a STF based on con ...

2006

Fatigue behavior of adhesively bonded joints composed of pultruded GFRP adherends for civil infrastructure applications

Thomas Keller

This paper presents results from studies on the fatigue behavior of pultruded GFRP laminates, adhesively bonded double lap joints composed of laminates, and full-scale adhesively bonded FRP bridge deck and steel girder connections. The studies show that th ...

2006

Correlating the rheological and mechanical response of polyurethane nanocomposites containing hyperbranched polymers

John Christopher Plummer, Marlene Rodlert

Cast polyurethane thermosets have been modified with randomly oriented exfoliated and intercalated montmorillonite clay usinghyperbranched polymers (HBP) as reactive additives to promote dispersion of the clay platelets. The influence of the clay content o ...

2005

Damage accumulation during cyclic loading of a continuous alumina fibre reinforced aluminium composite

Andreas Mortensen, Ludger Weber, Benedikt Moser

Fibres fracture gradually during the fatigue cycling of continuous alumina fibre reinforced aluminium. The number of fibre breaks increases linearly with the logarithmic cycle number, depends on the maximum stress and the stress ratio, and agrees with publ ...

2005

Ductility of Saffil(TM) short fibre reinforced metals

Andreas Mortensen, Ludger Weber, Reza Tavangar Hamzehkolaei

It is proposed that a critical combination of matrix strain hardening exponent and fibre volume fraction must be exceeded to confer attractive tensile ductility to short-fibre reinforced metal. © 2005 Acta Materialia Inc. Published by Elsevier Ltd. Al ...

2005

Longitudinal deformation of fibre reinforced metals: Influence of fibre distribution on stiffness and flow stress

Andreas Mortensen, Andreas Rossoll, Benedikt Moser

A computational analysis of the longitudinal deformation of continuous fibre reinforced metals is presented. Elastic and elastic-plastic matrix behaviour are considered. Analytical approaches are confronted with finite element analyses (FEA) for varying fi ...

2005

Consolidation and deconsolidation in composite processing

In composite processing, a compressible dry fiber preform is in many cases impregnated by a molten polymeric matrix. The impregnated part is sometimes used as produced, but most often it requires a reheating step before stamping, flow molding or even paint ...

EPFL2004

Novel Pulp Fibre Reinforced Thermoplastic Composites

Yves Leterrier

The reinforcement potential of pulp fibres is presently not fully explored in thermoplastic composites. One of the reasons is that currently used processing methods comprise several severe thermomechanical steps inducing premature degradation of the fibres ...

2003

Reaction injection pultrusion of PA12 composites: Process and modelling

Pierre-Etienne Bourban

The development of a reactive pultrusion process is presented by considering the advantages of an in situ polymerisation of thermoplastic lauryllactam monomers. The specifics of the reaction injection unit, of the fibre-drying oven and of different pultrus ...

2003

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