Matthieu Grésil
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View article: Characterisation of Damaged Tubular Composites by Acoustic Emission, Thermal Diffusivity Mapping, and TSR-RGB Projection Technique
Characterisation of Damaged Tubular Composites by Acoustic Emission, Thermal Diffusivity Mapping, and TSR-RGB Projection Technique Open
An increase in the use of composite materials, owing to improved design and fabrication processes, has led to cost reductions in many industries [...]
View article: Hyperbranched Interpenetrating Hydrogen Bond Network (HIHBN) Proton Exchange Membrane for Fuel Cells Above 220 °C
Hyperbranched Interpenetrating Hydrogen Bond Network (HIHBN) Proton Exchange Membrane for Fuel Cells Above 220 °C Open
High‐performance proton exchange membranes (PEMs) play a vital role in the efficiency of high‐temperature proton exchange membrane fuel cells. In this study, a novel PEM with a hyperbranched interpenetrating hydrogen bond network (HIHBN) i…
View article: A Novel Criterion for Interpreting Acoustic Emission Damage Signals Based on Cluster Onset Distribution
A Novel Criterion for Interpreting Acoustic Emission Damage Signals Based on Cluster Onset Distribution Open
Structural health monitoring (SHM) relies on non-destructive techniques such as acoustic emission (AE) that generate large amounts of data over the lifespan of systems. Clustering methods are used to interpret these data and gain insights …
View article: Dynamic elastomers based on bio‐derived crosslinker
Dynamic elastomers based on bio‐derived crosslinker Open
Petroleum‐derived monomers are the most common building blocks for ester‐based thermosets. Bio‐derived thermoset elastomers are becoming viable alternatives to conventional thermosets. Herein, we developed a biobased vitrimer‐type thermose…
View article: Epoxy Vitrimer Materials by Lipase-Catalyzed Network Formation and Exchange Reactions
Epoxy Vitrimer Materials by Lipase-Catalyzed Network Formation and Exchange Reactions Open
The preparation and reprocessing of an epoxy vitrimer material is performed in a fully biocatalyzed process wherein network formation and exchange reactions are promoted by a lipase enzyme. Binary phase diagrams are introduced to select su…
View article: Lamb waves-based technologies for structural health monitoring of composite structures for aircraft applications
Lamb waves-based technologies for structural health monitoring of composite structures for aircraft applications Open
The most common researched area of damage in a composite material such as carbon fibre reinforced plastics (CFRP) used currently in aircraft construction is barely visible impact damage (BVID), significantly reducing mechanical properties.…
View article: Lipase-Catalyzed Epoxy–Acid Addition and Transesterification: from Model Molecule Studies to Network Build-Up
Lipase-Catalyzed Epoxy–Acid Addition and Transesterification: from Model Molecule Studies to Network Build-Up Open
Commercially available lipase from Pseudomonas stutzeri (lipase TL) is investigated as a biocatalyst for the formation of an acid-epoxy chemical network. Molecular model reactions are performed by reacting 2-phenyl glycidyl ether and hexan…
View article: Epoxy Homopolymerization as a Tool to Tune the Thermo-Mechanical Properties and Fracture Toughness of Vitrimers
Epoxy Homopolymerization as a Tool to Tune the Thermo-Mechanical Properties and Fracture Toughness of Vitrimers Open
Epoxy/dicarboxylic acid vitrimer was prepared by the solvent-free reaction of diglycidyl ether of bisphenol A (DGEBA) and 1,4-cyclohexane dicarboxylic acid (CHDA) with the addition of monobutyltin oxide (Sn) as a catalyst. By tailoring the…
View article: Development of a fire detection and suppression system for a smart air cargo container
Development of a fire detection and suppression system for a smart air cargo container Open
This study investigates and proposes a fire detection and suppression system for a smart air cargo container. A series of smoke spread and fire evolution numerical models are executed to assess the performance of container-based fire detec…
View article: Three‐dimensional finite‐element analysis multiphysics modelling of electromagnetic Joule heating in carbon fibre composites
Three‐dimensional finite‐element analysis multiphysics modelling of electromagnetic Joule heating in carbon fibre composites Open
This study investigates the possibility of electromagnetic heating of carbon fibre composites (CFCs) to the resin curing temperature, utilising Joule heating, with the main potential application being the on‐site and in‐situ repair of dama…
View article: Dicarboxylic acid-epoxy vitrimers: influence of the off-stoichiometric acid content on cure reactions and thermo-mechanical properties
Dicarboxylic acid-epoxy vitrimers: influence of the off-stoichiometric acid content on cure reactions and thermo-mechanical properties Open
Vitrimers with 1 : 1 to 2 : 1 epoxy/acid ratio and TBD show increased stiffness and gradual transition from an exchangeable to non-exchangeable network.
View article: Tensile and flexural behaviour of a graphene/epoxy composite: experiments and simulation
Tensile and flexural behaviour of a graphene/epoxy composite: experiments and simulation Open
The tensile and flexural behaviour of a graphene nanoplatelet (GnP) reinforced polymer, Grade M25 GnP / Araldite LY564 is experimentally investigated. This is followed by a multi-scale finite element model to simulate the tensile response …
View article: Experimental electrical characterisation of carbon fibre composites for use in future aircraft applications
Experimental electrical characterisation of carbon fibre composites for use in future aircraft applications Open
This study presents experimental testing of samples from two uni‐directional carbon fibre composite (CFC) manufactured panels to determine the factors that influence the electrical properties of CFCs and to also determine the temperature c…
View article: Damage identification in composites through acoustic emission monitoring
Damage identification in composites through acoustic emission monitoring Open
International audience
View article: Image reconstruction and characterisation of defects in a carbon fibre/epoxy composite monitored with guided waves
Image reconstruction and characterisation of defects in a carbon fibre/epoxy composite monitored with guided waves Open
In this extensive experimental study, the structural health monitoring (SHM) of a large 1m x 1m carbon fibre reinforced polymer (CFRP) laminate was performed using guided waves.Multiple hole-and crack-type defects were induced in the struc…
View article: Infrared thermography for void mapping of a graphene/epoxy composite and its full‐field thermal simulation
Infrared thermography for void mapping of a graphene/epoxy composite and its full‐field thermal simulation Open
Important challenges are faced during the manufacturing of graphene nanoplatelet (GNP)/polymer composites, associated with material quality and how to eliminate or reduce fabrication‐induced defects in the effort to improve performance. In…
View article: Laser‐aided curing of a GnP/epoxy nanocomposite optimised by multiscale finite element analysis
Laser‐aided curing of a GnP/epoxy nanocomposite optimised by multiscale finite element analysis Open
In this work, the possibility of laser aided curing of GnP/epoxynanocomposites is explored by means of finite element analysis. A multiscaleand multi-physics analysis is performed to identify and optimisecritical manufacturing parameters –…
View article: In-situ monitoring of braided composite tubes with optical fibres and piezoelectric sensors
In-situ monitoring of braided composite tubes with optical fibres and piezoelectric sensors Open
In this work, an optical fibre based strain sensor is integrated between the plies of a braided composite tube. This enables strain monitoring during braiding, resin infusion, and curing. Following manufacture, flexural loading is complete…
View article: Graphene–aramid nanocomposite fibres <i>via</i> superacid co-processing
Graphene–aramid nanocomposite fibres <i>via</i> superacid co-processing Open
Chlorosulfonic acid, an effective graphene dispersant, can be employed to produce graphene-aramid composite fibres.
View article: HYBRID THERMOSET COMPOSITES FOR IMPROVING FRACTURE TOUGHNESS
HYBRID THERMOSET COMPOSITES FOR IMPROVING FRACTURE TOUGHNESS Open
Combining the advantages of the engineering thermoplastic and graphene nanoplatelets to improve fracture toughness of epoxy while maintaining all mechanical and thermal properties of material
View article: Damage Detection in a Composite T-Joint Using Guided Lamb Waves
Damage Detection in a Composite T-Joint Using Guided Lamb Waves Open
Low velocity impact induces barely visible damage in the form of matrix cracking or delamination that can grow under hydro-thermo-mechanical loading and possibly lead to catastrophic failure if not detected at an early stage. A network of …
View article: Finite element modelling of air cavities effect on GnP/epoxy nanocomposite thermal response and its full-field validation
Finite element modelling of air cavities effect on GnP/epoxy nanocomposite thermal response and its full-field validation Open
The manufacturing process of GnP/polymer nanocomposites exhibits important challenges regarding the material quality and how to reduce or eliminate fabrication induced defects. In this work, the effect of air cavities (voids) on the therma…