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Véronique Michaud

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Publications associées (244)

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Novel tooling for direct melt impregnation of textile with variotherm injection moulding: Methodology and proof of concept

Véronique Michaud, Vincent Werlen

Thermoplastic compression resin transfer moulding coupled with injection moulding is an appealing process for the production of thermoplastic composites. However, its implementation at an industrial scale remains challenging as variotherm injection mouldin ...

SAGE PUBLICATIONS LTD2022

A model for the consolidation of hybrid textiles considering air entrapment, dissolution and diffusion

Véronique Michaud, Vincent Werlen

A new model is proposed for the consolidation of hybrid textiles, in which air entrapment and dissolution are considered. One of the key parameters is tow permeability, which is described by the analytical model of Gebart and validated at very high fibre v ...

ELSEVIER SCI LTD2023

Permeability properties of composite reinforcements

Véronique Michaud

Permeability is defined here from the equations of fluid flow through porous media. It represents, for composite reinforcements, a measure for their ease of impregnation by a fluid resin. Modeling of the saturated permeability tensor is presented using a h ...

Woodhead Publishing2021

Performance of self-healing epoxy with microencapsulated healing agent and shape memory alloy wires

Jan-Anders Edvin Maansson, Véronique Michaud

We report the first measurements of a self-healing polymer that combines a microencapsulated liquid healing agent and shape memory alloy (SMA) wires. When a propagating crack ruptures the embedded microcapsules, the liquid healing agent is automatically re ...

2009

Graded glass mat reinforced polypropylene

Jan-Anders Edvin Maansson, Véronique Michaud, Joëlle Wolfrath

In the impregnation process, when pressure is applied, the dry fiber preform is first compressed and then unloads as the matrix flows within the pores. It has been shown earlier that for glass mat-reinforced thermoplastic (GMT) materials, the time to provi ...

2005

Phase separation at the fiber-matrix interface in composites based on a thermoplastic/polyester blend

Jan-Anders Edvin Maansson, Véronique Michaud, Xavier Bulliard

A study of the microstructure developing at the surface of glass fibers in a poly(vinyl acetate) (PVAc)/polyester blend is presented. Three different experimental methods are used: a technique based on the Wilhelmy method to measure the wettability of the ...

2005

In situ strain and temperature monitoring of adaptive composite material

René Salathé, Véronique Michaud, Hans Georg Limberger

An optical fiber sensor is designed to simultaneously measure strain and temperature in an adaptive composite material. The sensor is formed by splicing two fiber Bragg gratings (FBGs) close to each other, which are written in optical fibers with different ...

SAGE Publications2006

Influence of the mould thermal expansion on composite stress build-up during curing

Jan-Anders Edvin Maansson, Véronique Michaud, Sébastien Lavanchy

The influence of the mould material on the build-up of internal stresses during autoclave cure of a unidirectional carbon fibre composite material was investigated using embedded optical fibre Bragg gratings. Four flat moulds (i.e. aluminium, steel, carbon ...

2006

Dynamic Properties of Materials for Alpine Skis

Jan-Anders Edvin Maansson, Véronique Michaud, Pierre-Etienne Bourban, John Christopher Plummer, Christian Fischer

The aim of the present research has been to quantify the influence of different materials on the global dynamic response of a ski. The properties of the individual constituent materials were characterized as a function of temperature and frequency using dy ...

Springer2006

On the influence of flow-front orientation on stringer stiffened composite panels in water impacts

Véronique Michaud

Water impacts form the critical load case for high-performance carbon fibre reinforced polymer (CFRP) racing craft. Such events produce a peaked, non-uniform pressure distribution that travels along a hull panel as it is immersed. Current design standards ...

2024

Thermoviscoelastic anisotropic analysis of process induced residual stresses and dimensional stability in real polymer matrix composite components

Jan-Anders Edvin Maansson, Véronique Michaud

A design tool able to predict the residual stress state and dimensional stability of large complex shaped composite parts has been developed. It is based on a finite element model, using a three-dimensional anisotropic thermo-viscoelastic formulation. Asym ...

2006

Hybrid glass mat reinforced polypropylene-montmorillonite nanocomposites

Jan-Anders Edvin Maansson, Véronique Michaud, John Christopher Plummer, Sara Dalle Vacche, Chrystèle Houphouet-Boigny Favre

Although addition of montmorillonite (MMT) clay to isotactic polypropylene (iPP) results in large increases in the melt viscosity at low shear rates, satisfactory impregnation of glass mats is obtained with iPP/MMT under conditions typical of industrial pr ...

Trans Tech Publications Ltd, Laublsrutistr 24, Ch-8717 Stafa-Zurich, Switzerland2009

Wettability of Glass Fibers in Reactive Thermoplastic/Polyester Blends: Comparison between Compatible and Incompatible Thermoplastics

Jan-Anders Edvin Maansson, Véronique Michaud, Xavier Bulliard

The evolution of morphology of reactive thermoplastic/unsaturated polyester blends at the surface of glass fibers is investigated during curing. The study focuses on two different types of thermoplastics, incompatible and compatible respectively with the p ...

2005

Pre- and Post-Transition Behavior of Shear Thickening Fluids in oscillating Shear

Jan-Anders Edvin Maansson, Véronique Michaud, Pierre-Etienne Bourban, John Christopher Plummer, Christian Fischer

The dynamic shear-thickening behavior of concentrated colloidal suspensions of fumed silica in polypropylene glycol has been investigated. Dynamic frequency sweeps showed that, for any given solids concentration, the complex viscosity at different imposed ...

Springer-Verlag2007

Recyclable flame retardant phosphonated epoxy based thermosets enabled via a reactive approach

Véronique Michaud, Valentin Rougier

The development of reusable fire-safe polymers with a prolonged lifetime heralds the switch for a transition towards circular economy. In this framework, we report a novel phosphonated thermoset which is composed of networked phosphonate esters containing ...

ELSEVIER SCIENCE SA2023

Structural damping of model sandwich structures using tailored shear thickening fluid compositions

Jan-Anders Edvin Maansson, Véronique Michaud, Christian Fischer

Shear thickening fluids (STF) demonstrate the ability to simultaneously stiffen and increase their damping capacity above a critical shear strain, which depends on the particle concentration and aspect ratio in the STF. The present work considers two types ...

Institute of Physics2010

Monitoring strain gradients in adhesive composite joints by embedded fiber Bragg grating sensors

Véronique Michaud, Hans Georg Limberger, John Botsis, Georgios Violakis, Roohollah Sarfaraz Khabbaz, Luis Pablo Canal Casado

The adhesive bonding of composite materials can be applied to assemble light-weight structures for aeronautical applications. However, the application of adhesive bonds in primary load-bearing structures is limited by the lack of adequate techniques to mon ...

Elsevier2014

Assessment Of The Dispersion Quality Of Refractive Index-Matched Nanodispersions

Véronique Michaud

Dispersion quality has a large influence on the resulting properties of filled polymers, hybrids and nanocomposites in general. Reducing the van der Waals forces and therefore, matching the refractive index between the filler and the matrix should improve ...

Kerschensteiner Verlag Gmbh2016

Healing of a glass fibre reinforced composite with a disulphide containing organic-inorganic epoxy matrix

Véronique Michaud, Amaël Maximilien Cohades

We report the development of an intrinsic healing glass fibre reinforced polymer (GFRP) composite based on a disulphide-containing organic-inorganic thermoset matrix. Thermomechanical experiments showed that the newly developed matrix has a combination of ...

Elsevier2017

Combined computational-experimental investigation of residual stresses and pre-cracking in mode I behaviour of thick adhesively bonded GFRP composite joints

Véronique Michaud, Anastasios Vassilopoulos, Jialiang Fan

This paper presents a novel Finite Element (FE) simulation approach to examine the mode I fracture of thick adhesive joints used particularly in the trailing edge of the wind turbine blades. The approach involved FE models of the DCB specimens focusing on ...

Elsevier BV2025