Members

IMMC

Thomas Pardoen
Professor
Contact
Recent publications

is full professor and President of the Institute of Mechanics, Materials and Civil Engineering (iMMC) at the Université catholique de Louvain (UCL). Outside UCL, he is the Chair of the Scientific Council of the Belgian Nuclear Research Center SCK•CEN. He did his engineering studies (1994) and his Ph. D. (1998) at UCL, where he also got a master in philosophy (1996), and was a postdoctoral researcher at Harvard University before returning at UCL in 2000 as faculty member. He is a member of the EUROMECH, MRS and ASME societies. His research interests span the area of the nano-, micro- and macro- mechanics of materials and systems, with an emphasis on multiscale experimental investigations and modelling of deformation and fracture phenomena, as well as coupled functional-mechanical properties and irradiation effects, from both fundamental and applied perspectives. His research activity is articulated around the mechanics of three classes of materials: (i) composites, hybrids, multimaterials, and adhesives, (ii) thin films, coatings and mems, (iii) high performance metallic alloys. He has supervised ~40 Ph. D. students, with 28 thesis accomplished, and ~20 post docs. He is a member of the editorial advisory board of J. Mech. Phys. Solids, Engng. Fract. Mech and Int. J. Damage Mech. He has published over 175 papers in peer reviewed international journals, with current h factor = 47 (Google). He received the Grand Prix Alcan of the French academy of sciences in 2011 and a Francqui Chair from Université de Liège in 2015. He has been nominated Euromech Fellow in 2015.

IMMC main research direction(s):
Dynamical and electromechanical systems
Processing and characterisation of materials
Solid mechanics

Keywords:
fracture mechanics
hybrid materials
micromechanics

Research group(s): IMAP

PhD and Post-doc researchers under my supervision:



Florent Hannard

graduated as a materials science engineer at Université catholique de Louvain (Belgium) in 2013. He is currently doing a PhD thesis (funded by a FRIA grant), started in September 2013 and under the joint supervision of Prof. Thomas Pardoen and Prof. Aude Simar from UCL. His research focuses on the contribution from microstructure heterogeneities on the micromechanisms of ductile damage and cracking in metallic alloys. In order to address these effects on damage accumulation, a combined experimental and a modeling strategy is developed. The experimental strategy relies on in situ tensile testing coupled to 3D microtomography, in situ laminography during sheet loading and a variety of more classical mechanical tests. A cellular automaton type modeling is used to capture particle size distribution and cluster effects on the void nucleation and coalescence processes. His project also involves the use of friction stir processing (FSP) in order to increase the ductility of industrial aluminium alloys of the 6xxx series. From an applicability viewpoint, this method has the potential to locally improve ductility of sheets at locations where forming involves large strains or of structural components at stress concentration points.


Characterization and physics based modeling of plasticity and fracture of Dual-Phase steels towards ultratough materials by microstructure optimization
Karim Ismail

The research work, in collaboration with company ArcelorMittal, is about the plasticity, the damage and the crack propagation resistance of dual-phase steels, which are commonly used in the automotive industry. A minimum level of fracture toughness is required to prevent the propagation during forming operations of small edge damage or cracked zones induced by cutting. Therefore, unravelling the relationship between fracture toughness, microstructure and damage mechanisms is essential to develop advanced steels with superior forming ability. Furthermore, reaching superior fracture toughness could open to other potential applications.
Experimental works as well as computational modeling are used to study the behavior of such steels. A model for the plastic behavior and for the damage mechanisms related to the microstructure has been developed. A finite element based unit cell approach is used to address the plastic behavior, locally as well as at the macroscopic scale. A particular focus is put on the effect of particle morphology and orientation that have not been much investigated and that considerably affect local mechanical fields, and hence damage and fracture behavior. A two-stage void coalescence process is suggested in elongated microstructures. The data extracted from the elastoplastic analysis are fed into a cellular automaton approach of the damage evolution. This model introduces a statistical description of the material while using relatively simple damage evolution laws. Furthermore, the essential work of fracture method is used to quantify the resistance to the propagation of a crack on thin sheets. Martensite morphology in the form of platelets seems to be a means to reach a high fracture toughness. Finally, damage mechanisms are observed post-mortem and hole expansion ratio tests will be performed.


Micromechanical characterization of carbon fiber reinforced epoxy resins
Jérémy Chevalier

Carbon fiber reinforced polymers (CFRP) are widely used in structural applications where weight is a critical factor. However, the lack of generic tools to accurately predict their failure must be compensated by heavy experimental campaigns to ensure the safety of the structures, increasing their cost. Hence, the goal of this thesis is to provide a precise understanding of the deformation and failure mechanisms of CFRP constituents in order to serve as a basis of a bottom-up approach.

Regarding the matrix, a detailed analysis of both the fracture and viscoplastic behavior is peformed to understand the underlying mechanisms responsible for its apparent mechanical behavior. In particular, a fracture criterion has been identified and validated under a large range of stress triaxialities, providing a unique failure mechanism for highly cross-linked epoxy resins. Regarding viscoplasticity, the so-called shear transformation zone (STZ) framework is used as a modelling approach to account for the nanoscale heterogeneity controlled mechanical response of glassy polymers. In parallel, macroscopic and insitu tests in a scanning electron microscope on a unidirectional composite are used to unveil the influence of the fibers on epoxy resins behavior when used as a matrix in CFRP. Lastly, nanoindentation is used both to characterize the microscale mechanical behavior of RTM6 and to perform push-out tests on single carbon fibers embedded in a polymer matrix to obtain direct a measurement of the interfaces properties.



Viscoplasticity and strain localization in metallic thin films
Guerric Lemoine

Metallic thin films are widely used in the microelectronic industry and for surface functionalization. Owing to their very fine microstructure, thin films generally suffer of a lack of ductility and are prone to creep at room temperature. To avoid such detrimental effects in applications, their mechanical behaviors have to be characterized and modeled. Combining both experiments and simulations, my doctoral research focus on the rate dependent plasticity and the strain localization of metallic thin films. The Lab-on-chip technique is used to characterize the yield stress, the ductility, the hardening behavior and the strain rate sensitivity of Ni thin films. A localized necking model is also developed, dedicated to thin films and nano crystalline metals which aims at accounting for strain gradient plasticity effects, for grain size dependent strength, rate sensitivity and the possible contribution of creep/relaxation mechanisms. A dislocation-based crystal plasticity model has also been developed in order to study the mechanical and creep/relaxation behavior of the polycrystalline Pd thin films with high initial defect concentration, obtained by M-S Colla during her PhD thesis.


Coupled mechanical-electrical effects in highly strained Ge thin films
Marie-Stéphane Colla

Graduated in chemical and materials science engineering at the Université catholique de Louvain in 2009 (Belgium). Then, under the supervision of Prof. Thomas Pardoen (iMMC) and Prof. Jean-Pierre Raskin (ICTEAM), she accomplished a PhD on the study of the mechanical properties of thin films, more specifically on the plasticity and creep of freestanding nanocrystalline Pd films. The lab-on-chip technique developed previously at the UCL was adapted to deform Pd thin films. After the PhD, she worked for more than two years at the CRM Group in Liège on the development of industrially viable thin film solar cells on steel. From June 2016 to September 2018, she is back at the UCL as a research engineer involved in projects dealing with the understanding of fracture behaviour of high strength steels under a wide range of strain rates.​ In 2018, she received a 'Chargée de recherches - FNRS grant' and is now working on coupled mechanical-electrical effects in highly strained germanium thin films. Germanium is a promising material for optoelectronic device owing to its compatibility with the standard complementary metal-oxyde-semiconductor (CMOS) technology and to the possibility to convert it into a direct bandgap semiconductor by straining it.


Characterization and modeling of surface mechanical properties at the micro-nanometer scale for the study of polymer and composite behavior in contact with industrial fluids
Céline Vlémincq

Currently the characterization of the mechanical properties of polymers after ageing with fluids is long and costly, as it is essentially based on the macroscopic characterization of saturated samples. In this context, the objective of the project is to exploit the potential of local methods to evaluate the evolution of the surface mechanical properties, through nanoindentation and atomic force microscopy (AFM), and to establish assessment protocols for the quantification of the impact of fluids on mechanical properties. With these local methods, the aging time could be reduced from months to a few minutes.

To achieve this objective it will be necessary to establish a modeling strategy based on a micro-mechanical basis. The aim of the modeling approach is to link nano- and microscopic measurements to the elasto-viscoplastic properties and to understand the root causes of the fluid impact on physical mechanisms.


TECCOMA
Pierre Bollen

graduated as engineer in chemistry and materials science at Université catholique de Louvain (Belgium) in 2010. In 2015, he obtained at UCL his PhD thesis entitled hierarchical hybrid materials combining wideband electromagnetic absorption and mechanical performance, funded by a FRIA grant. After working one year as a support engineer in the field of extended finite element modeling, he came back at the UCL as a senior researcher involved in applied research projects in collaboration with industry. He is currently dealing with erosion coating on CFRP as well as thermal and electromagnetic management in electrical power converter.


Teccoma
Vincent Destoop

made his PhD on the adhesion of tooth-filling materials to the dentine. He’s now working on composite materials to replace metals in aircraft applications. He takes part to projects studying the mechanical behavior of composite materials (mainly polymer matrix reinforced with long fibers) which are new candidate materials for modern planes. His investigations focus on their bulk, cracking, impact and adhesion properties.


Preforming of composite thermoset prepreg fabrics.m
Catherine Doneux

Graduated as Civil Engineer at University of Liege in 1992,C. Doneux began her career with a first experience on the assessment of an existing prestressed railway bridge. Thanks to several FNRS grants, she obtained a PhD degree in the domain of steel-concrete composite structures under seismic action in 2002 and was involved in several researches on paraseismic design at ULg until 2005. After some career break, she joined UCL in December 2008 to take part to the development of new composite activities related to various applied research projects in collaboration with the industry (aeronautics). Her main fields of expertise are the mechanical characterization of composite materials by mechanical testing, the quality control of the standardised tests and the development of new tests. She has also some experience in fatigue testing, damage characterization and fracture mechanics. She is currently working on the preforming of composite thermoset prepreg fabrics.


BIODEC, STOCC
Audrey Favache

obtained a PhD degree in the domain of process control in 2009 at Université catholique de Louvain (Belgium), after having graduated there as chemical engineer in 2005. Since then, she is working as a "senior" researcher on several applied research projects in collaboration with the industry in the domain of mechanics of materials. More particularly, she is interested in the link between the mechanical properties of the individual components of a complex system and the global mechanical response of this system. She applied this approach to the framework of tribology and contact mechanics for understanding the scratch resistance of coatings and multilayered systems. Her work covers both experimental aspects and finite element simulations.


Renforcement des capacités de RDI des organismes de recherche dans les domaines utiles aux PME
Michaël Coulombier

graduated as a material science engineer from UCL in 2006. He finished his PhD in 2012 under the supervision of Prof. Thomas Pardoen (iMMC) and Prof. Jean-Pierre Raskin (ICTEAM) developing a lab on-chip technique for nano-mechanical characterisation of thin films. Since then he has been a research assistant in iMMC involved in various projects dealing with material science, nanomechanical testing and tribology.


Recycle more plastics from residual waste/ Bio-sourced polymer composites
Naïma Sallem

holds a PhD in Materials Sciences from the University of Lille 1 in France in 2008, in collaboration with l’Ecole des Mines de Douai. The theme of her works was to establish the relationships between the mechanical behavior, structural and macromolecular orientation of multilayer films composed of Polyamide 6 and Polyethylene for the food packaging industry. Then, she worked as research assistant at the BSMA institute at UCL on Walloon Region projects concerning reactive extrusion, polymer nanocomposites, polymer from biomass waste. She is now working on Life Cycle Assessment (LCA) and studying the environmental impacts of recycling the plastics from residual waste and she is involved in a project based on bio-sourced composites.


Influence of defects on the life of biomedical implants
Maïté Croonenborghs

Implants are devices aiming to support, help or even correct biological structures. However, with time, some of these implants show aging problems. The roots of these problems can have numerous explanations. In some cases, the body reacts to the presence of a foreign body, and this can lead to health risks. Sometimes, the material can show, with time, signs of weakness. Later on, these defects can lead to the failure of the implant.









In the case of permanent stent implants, the presence of a foreign body in the blood vessels can lead to restenosis or late thrombosis. This is why bioresorbable stents are nowadays developed. These stents should support the vessels during their healing period and dissolve in an inoffensive way afterwards. Iron-based alloys are investigated for their appropriate mechanical properties but their degradation rate is too low. One investigated solution is to increase surface roughness to dissolve faster the implant. The effect of this roughness on the expansion process has not been analyzed for now.









The case of growth rods shows that the material itself can lead to implant failure. These rods are placed, during a surgery, along the spine of scoliotic children. They aim to support the spine and help it to straighten back. However, fracture events occur in 36% of the patients. During the surgery, the rods are bent to fit to the natural shape of the spine. The tools employed for this process can introduce some indentation marks on the surface of the rods and decrease their fatigue lifetime.









From these case studies, it is observed that the completion of an implant (i.e. stent implantation process) or its lifetime (i.e. growth rod failure) can be affected by its surface state. This research will therefore focus on the imperfection sensitiveness of such devices. Various kinds of defects are introduced at the sample surface. To understand the influence of these defects on the mechanical properties, these samples are tested and compared.






Fracture toughness of high entropy alloys
Antoine Hilhorst

High entropy alloys (HEAs) are a new family of metallic alloys. In contrast to conventional alloys, HEAs have multiple principal elements e.g. the equiatomic "Cantor" alloy CrMnFeCoNi. Alloys in this range of chemical composition have gathered attention only recently. From what was observed in conventional alloys, it was expected that HEAs microstructure be composed of several intermetallic phases but some systems are surprisingly single phase solid solution. Moreover, such single-phase alloys have excellent mechanical properties. For instance, CrMnFeCoNi possess a large fracture toughness, which increases with decreasing temperature, putting this alloy on par with the current best alloys used for cryogenic applications. As such, the objective of the thesis is to understand the underlying mechanisms responsible for the observed macroscopic behavior of such alloys.

The thesis aims to answer several questions such as: What are the mechanisms responsible for the increase in ductility, strength, and fracture toughness with decreasing temperature? What high-throughput methodology would be able to screen the vast range of possible chemical composition of HEAs for high performance alloys?

To understand the deformation mechanisms, several HEAs will be fully characterized from casting to mechanical testing. For the fracture toughness measurements, the essential work of fracture method will be employed as it is best suited for ductile thin sheets than compact tests. Diffusion multiples will be explored as a possible high-throughput method, as the presence of composition gradients allows the simultaneous characterization of a range of composition by techniques such as EDX, EBSD and nano-indentation.


On a chip fracture mechanics test method
Sahar Jaddi

The aim of this research is to develop a new testing method based on an-on-chip concept to measure the fracture toughness of freestanding submicron films. This device consists of two major components, a notched specimen and two actuators. When the test structure is released by etching the sacrificial layer, the two actuators contract, this in turn loads the specimen in traction. In order to define the stress intensity factor expression, which is given by this new model, analytical analysis and finite element simulations must be performed in addition to the experimental part, which is based on the microfabrication techniques. Silicon nitride, silicon oxide and metallic glass thin films will be studied during this work. The major goal of this model is to extract fracture toughness of 2D materials like graphene.


Electromechanical properties of thin films
Farzaneh Bahrami

The production of Graphene/h-BN heterostructures and the investiong of their microelectromechanical properties, the production of origami and kirigami stacks of Graphene and h-BN, the raman spectroscopy, SEM, TEM AFM and nanoindentation will be used


Development and qualification of irradiation tolerant tungsten and novel toughness-enhanced composites for fusion applications
Chao Yin

This research aims at investigation of the radiation damage and post-irradiation mechanical-thermal behavior of tungsten. Tungsten selected as the first wall armor and Tungsten-based composites for structural applications in DEMO are expected to receive doses up to 20 dpa (Fe) (for the EARLY DEMO) or even higher (full power DEMO) [1]. Under these conditions, the mechanical properties of the materials are known to degrade radically due to (i) neutron irradiation, (ii) heat transients, (iii) plasma gas uptake and (iv) nuclear transmutation. Thus, this investigation is called by the need to validate the performance of novel and baseline garde tungsten. This project will include the experiemental study of reference and irradiated materials carried out by mechanical test and microstructure investigation.


Contribution to radiation damage modeling of reactor pressure vessel materials in the ductile upper shelf regime (From Charpy impact upper shelf energy to crack resistance curve)
Wei Ren

The objective of the this work is to collect all available data that were produced in the last decade including both tensile and Charpy impact as well as crack resistance curves to provide a physically-guided engineering model that can be used as a trend curve for RPV materials. The ultimate goal is to be able to predict initiation fracture toughness and tearing resistance of RPV steels based on the material variables (Cu, Ni, P, ...) and irradiation variables (irradiation temperature, neutron flux and fluence).

This subject combines an experimental part aiming to collect and classify all available data on irradiation effects on the RPV materials properties with an analytical part consisting in physical understanding of the underlying mechanisms of both radiation damage and ductile fracture. It is of prime importance to understand how irradiation modifies the microstructure (nano-size irradiation defects) and this translates into the changes of the crack resistance properties. The phenomenology of the radiation damage model that should be developed can rely on the same concepts used for the DBTT.

The outcome of this work is the development of an improved radiation damage tool that can be very helpful in assessing the fracture properties of vessel materials at high temperatures.



Improving the properties of glass fiber reinforced acrylic thermoplastic resin based composites
Sarah Gayot

For the manufacturing of continuous fiber reinforced thermoplastic composites (CFRTP), certain monomers can be infused through glass fabric and then polymerized in situ, in order to make a thermoplastic composite part. However, defects - e.g. porosity - can occur in the material, due to the thickness of the laminates and the shrinkage of the resin matrix during polymerization. Such phenomena must be understood, as well as their effects on the mechanical properties of the final composite part.

The originality of this work lies in the very nature of the polymeric matrix used for manufacturing the composite parts, which is thermoplastic instead of thermoset. Little is known about the behaviour of such thermoplastic composites, especially at a microscopic scale. During this PhD, we will try to understand how defects occurring in the material can influence the structural properties of the CFRTP, and we will try to mitigate (or at least control) the incidence of such defects. This will imply a better knowledge of how usual characterisation techniques can be applied from thin to thick composite parts. In particular, digital simulation will be used so as to predict the properties of thick composite parts from those of thinner samples.


Interface Controlled Super Tough metal/metallic glass Hybrid Nanolaminate Coatings
HUI WANG

It involves the processing of thin multilayers by deposition methods. the characterization of the structure by SEM and advanced TEM methods, the testing of the mechanical properties with nanoindentation, on chip testing and polymer supporting substrates, the modelling using finite element methods. The focus will be put on Al/nanoporous Al2O3 systems involving (or not) a graphene interfacial single-layer. Similar approach will be used for Cu/CuZr hybrid nanolaminate films for which a collaboration will be established with Prof. C. Detavernier from Ghent University in Belgium. Advanced TEM characterization of the small-scale plasticity/failure mechanisms will be achieved within the EMAT group at the University of Antwerp in Belgium (aberration corrected TEM/spectroscopy, nanobealm electron diffraction, in-situ TEM nanomechanical testing, etc.).


Experimental and numerical investigations on the miniaturization for fracture toughness characterization of RPV materials
Meng Li

This project deals with the miniaturization of fracture toughness specimen for the characterization of the cracking resistance RPV materials. Indeed, in the nuclear field, the use of mechanics tests to measure fracture toughness of react pressure vessel (RPV) materials, is key for producing reliable integrity assessments and accurate residual life predictions. However, the space available inside irradiation facilities is extreme. Furthermore, the use of normal size specimens leads to significant of radioctive wastes. Miniature Compact Tension specimen, MC(T), as one of the geometries that offers significant advantages, can optimize the use of available material and generate meaningful fracture toughness values. But these specimens still do not comply with existing requirements due to (i) effect of geometry, (ii) effect of side grooving, (iii) effect of loss of constraint, etc. Therefore, in his research project, detailed numerical analysis combined with miniaturization tests are used. The final aim is to better qualify and validate the use of mini-CT geometry in both brittle and ductile fracture regimes.


Deformation and failure of polymeric glasses
Frederik Van Loock

My research work is focused on the deformation and fracture of (glassy) polymers. Some research topics include:

i) The development of a mesoscale finite element model based on the concept of shear transformation zones (STZs). The STZ model allows to predict the complex large deformation response of glassy polymers, including post-yield softening and non-linear unloading behaviour, by calibration of a few parameters via experiments on the polymer of interest. The model also sheds light on the interactions between discrete and elementary distortion mechanisms (and their collective organisation) during plastic deformation of polymeric glasses. Ongoing research includes the effect of ageing (and mechanical rejuvenation) and the effect of confinement due to the presence of fibres on the constitutive response of glassy polymers.

ii) Solid-state (nano)foaming of polymers.

iii) Fracture problems in polymers and fibre reinforced polymer composites.


Vieillissement thermomécanique des brasures d'assemblage de composants électroniques pour applications spatiales
Vincent Voet

Les développements d’électroniques pour applications spatiales nécessitent de garantir une durée de vie de 15 ans avec une probabilité d’échec très faible. L’objet de la recherche sera d’établir des outils de conception permettant l’analyse préalable du comportement en fatigue de ces équipements électroniques. La fatigue des circuits électroniques est dominée par la rupture des brasures des composants montés sur circuits imprimés. Une fois solidaires du circuit imprimé, les brasures subissent tout au long de leur vie des contraintes thermomécaniques liées entre autres à l’inhomogénéité des différents coefficients de dilatation thermique des matériaux qui constituent le montage. Chaque composant combiné à chaque type de report doit donc être caractérisé en vieillissement. Cette caractérisation consiste à réaliser des centaines de cycles thermiques en étuve. Ces essais de vieillissement accélérés prennent plusieurs mois et sont coûteux d’où le besoin de pouvoir estimer les probabilités d’échec ou de succès de façon anticipée.
Cette évaluation permettra de donner un intervalle de confiance sur le succès ou l’échec de la qualification d’un nouveau report de composant ou de l’extrapolation d’un report qualifié dans un environnement étendu. La construction de ces outils sera basée sur de la caractérisation par plans d’expériences physiques ou virtuels et de l’analyse de données relatives aux essais déjà réalisés dans le passé par Thalès Alenia Space.
L’analyse des mécanismes et conditions de fissuration impliquera notamment: Métallurgie des brasures SnPb en lien avec les paramètres de fabrication; Identification de lois de comportement thermoviscoplastiques des brasures SnPb à l’aide de la nanoindentation instrumentée; Calcul, par méthodes numériques, des champs de contraintes dans les composants et les brasures, provoqués par l’inhomogénéité des coefficients de dilatation thermique des constituants sur base du modèle constitutif choisi, de la géométrie locale de la soudure et des paramètres identifiés ;Identification des mécanismes de propagation de fissures et identification des liens avec la géométrie et la métallurgie ; en particulier, un élément clé est de pouvoir déterminer la part prise par la phase d’initiation versus propagation des fissures, dans le but éventuel de justifier qu’une des deux puisse être négligée. Dans ce cadre, il est prévu de générer des soudures avec des défauts artificiels contrôlés afin de voir leur impact sur le processus d’initiation de la fissuration, et de le quantifier. L’utilisation de la microtomographie exploitant aussi la corrélation d’image volumique sera un élément important à ce niveau; Vieillissement des brasures sur base des lois de vieillissement établies ; Quantification des incertitudes par approche statistique et probabilité à partir des données expérimentales et également par variation des paramètres clés dans leur plage d’incertitude (défauts géométriques, variations des paramètres constitutifs, présence des pré-défauts, variations de T° extrêmes, etc); Estimation d’un intervalle de confiance préalable de succès ou d’échec des essais envisagés.



Recent publications

See complete list of publications

Journal Articles


1. Jaddi, Sahar; Coulombier, Michaël; Raskin, Jean-Pierre; Pardoen, Thomas. Crack on a chip test method for thin freestanding films. In: Journal of the Mechanics and Physics of Solids, Vol. 123, p. 267-291 (2019). doi:10.1016/j.jmps.2018.10.005. http://hdl.handle.net/2078.1/212157

2. Cea, Andrew Ken; Leenaers, A.; Van den Berghe, S.; Pardoen, Thomas. Microstructure and calorimetric analysis of the U Mn binary system. In: Journal of Nuclear Materials, Vol. 514, p. 380-392 (2019). doi:10.1016/j.jnucmat.2018.11.035. http://hdl.handle.net/2078.1/212147

3. Ballout, Wael; Van Velthem, Pascal; Magnin, Delphine; Henry, E; Sclavons, Michel; Pardoen, Thomas; Bailly, Christian. Specific influence of polyethersulfone functionalization on the delamination toughness of modified carbon fiber reinforced polymer processed by resin transfer molding. In: Polymer Engineering & Science, Vol. 59, no. 5, p. 996-1009 (2019). doi:10.1002/pen.25055. http://hdl.handle.net/2078.1/212196

4. Dépinoy, S.; Massart, T.J.; Godet, S.; Pardoen, Thomas. On the mode I toughness of adhesive bonds exhibiting strain-softening and re-hardening. In: International Journal of Solids and Structures, Vol. 162, p. 1-13 (2019). doi:10.1016/j.ijsolstr.2018.11.026. http://hdl.handle.net/2078.1/214138

5. Bhowmick, Sanjit; Espinosa, Horacio; Jungjohann, Katherine; Pardoen, Thomas; Pierron, Olivier. Advanced microelectromechanical systems-based nanomechanical testing: Beyond stress and strain measurements. In: MRS Bulletin, Vol. 44, no.06, p. 487-493 (2019). doi:10.1557/mrs.2019.123. http://hdl.handle.net/2078.1/216531

6. Xiong, Zhiping; Jacques, Pascal; Perlade, Astrid; Pardoen, Thomas. Characterization and control of the compromise between tensile properties and fracture toughness in a quenched and partitioned steel. In: Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, Vol. (2019). doi:10.1007/s11661-019-05265-2. http://hdl.handle.net/2078.1/217519

7. Yin, Chao; Terentyev, Dmitry; Pardoen, Thomas; Petrov, Roumen; Tong, Zhenfeng. Ductile to brittle transition in ITER specification tungsten assessed by combined fracture toughness and bending tests analysis. In: Materials Science and Engineering: A, Vol. 750, p. 20-30 (2019). doi:10.1016/j.msea.2019.02.028. http://hdl.handle.net/2078.1/217529

8. Chevalier, Jérémy; Morelle, X.P.; Camanho, P.P.; Lani, Frédéric; Pardoen, Thomas. On a unique fracture micromechanism for highly cross-linked epoxy resins. In: Journal of the Mechanics and Physics of Solids, Vol. 122, p. 502-519 (2019). doi:10.1016/j.jmps.2018.09.028. http://hdl.handle.net/2078.1/203830

9. Chevalier, Jérémy; Camanho, P.P.; Lani, Frédéric; Pardoen, Thomas. Multi-scale characterization and modelling of the transverse compression response of unidirectional carbon fiber reinforced epoxy. In: Composite Structures, Vol. 209, p. 160-176 (2019). doi:10.1016/j.compstruct.2018.10.076. http://hdl.handle.net/2078.1/204609

10. Ismail, Karim; Perlade, Astrid; Jacques, Pascal; Pardoen, Thomas; Brassart, Laurence. Impact of second phase morphology and orientation on the plastic behavior of dual-phase steels. In: International Journal of Plasticity, Vol. 118, p. 130-146 (2019). doi:10.1016/j.ijplas.2019.02.005. http://hdl.handle.net/2078.1/214549


Patents


1. Detrembleur, C.; Molenberg, I.; Huynen, Isabelle; Thomassin, J.M.; Furnemont, Quentin; Pardoen, Thomas; Bailly, Christian; Eggermont, Stéphanie; Quiévy, Nicolas; Urbanczyk, L. Hybrid material for electromagnetic absorption. http://hdl.handle.net/2078.1/131139 http://hdl.handle.net/2078.1/131139

2. Pardoen, Thomas; Raskin, Jean-Pierre; Carbonnelle, Pierre; Gravier , Sébastien. Imposing and determining stress in sub-micron samples. http://hdl.handle.net/2078.1/75542 http://hdl.handle.net/2078.1/75542

3. Pardoen, Thomas; Fabrègue, Damien; Raskin, Jean-Pierre; André, Nicolas; Coulombier, Michaël. Internal stress actuated micro- and nanomachines for testing physical properties of micro- and nano-sized material samples. http://hdl.handle.net/2078.1/75541 http://hdl.handle.net/2078.1/75541

4. Detrembleur, Christophe; Huynen, Isabelle; Thomassin, Jean-Michel; Furnemont, Quentin; Pardoen, Thomas; Bailly, Christian; Eggermont, Stéphanie; Quiévy, Nicolas; Urbanczyk, Laetitia; Molenberg, Isabel. Hybrid material for electromagnetic absorption. http://hdl.handle.net/2078.1/86006 http://hdl.handle.net/2078.1/86006


Conference Papers


1. Hilhorst, Antoine; Pardoen, Thomas; Jacques, Pascal. On the Characterization of the Exceptional Fracture Toughness of CrMnFeCoNi High Entropy Alloy. http://hdl.handle.net/2078.1/216292

2. Jaddi, Sahar; Coulombier, Michaël; Raskin, Jean-Pierre; Pardoen, Thomas. On a chip fracture mechanics test method. http://hdl.handle.net/2078.1/204837

3. Idrissi, Hosni; Ghidelli, M.; Gravier, S.; Blandin, J.J.; Coulombier, Michaël; Raskin, Jean-Pierre; Schryvers, Dominique; Pardoen, Thomas. Atomistic plasticity mechanisms in metallic glass thin films : new insights from advanced transmission electron microscopy. http://hdl.handle.net/2078.1/200238

4. Idrissi, Hosni; Samaeeaghmiyoni, V.; Bollinger, C.; Boioli, F.; Gatti, R.; Devincre, B.; Cordier, P.; Pardoen, Thomas; Schryvers, Dominique. New dedicated methods for the improvement of quantitative in-situ TEM nanomechanical testing. http://hdl.handle.net/2078.1/200236

5. Idrissi, Hosni; Samaeeaghmiyoni, V.; Bollinger, C.; Boioli, F.; Gatti, R.; Devincre, B.; Cordier, P.; Pardoen, Thomas; Schryvers, Dominique. Dislocation based plasticity: new insights from quantitative in-situ TEM tensile testing. http://hdl.handle.net/2078.1/200237

6. Idrissi, Hosni; Samaeeaghmiyoni, V.; Bollinger, C.; Boioli, F.; Gatti, R.; Devincre, B.; Cordier, P.; Pardoen, Thomas; Schryvers, Dominique. Pushing the limits of quantitative in-situ nanomechanical testing in TEM. http://hdl.handle.net/2078.1/200240

7. Chevalier, Jérémy; Morelle, Xavier; Camanho, Pedro; Lani, Frédéric; Pardoen, Thomas. Modelling of an epoxy matrix based on the shear transformation zone framework. http://hdl.handle.net/2078.1/199937

8. Vlémincq, Céline; Pardoen, Thomas; Nysten, Bernard; Gandin, Ezio. Characterization and modeling of the ageing of polymers in contact to fluids using nanomechanical probes. http://hdl.handle.net/2078.1/214424

9. Vlémincq, Céline; Pardoen, Thomas; Nysten, Bernard; Gandin, Ezio. Characterization and modeling of the ageing of polymers in contact to fluids using nanomechanical probes. http://hdl.handle.net/2078.1/214423

10. Pardoen, Thomas. Microstructure heterogeneity dominated ductile fracture. http://hdl.handle.net/2078.1/214426


Book Chapters


1. Braccini, Muriel; Dezellus, O.; Pardoen, Thomas. Maîtrise de l'adhérence. In: Mécanique des interfaces solides (Mécanique et Ingénierie des Matériaux. Matériaux; xxx), Lavoisier: Paris, France, 2012, p. 137-178. 978-2-7462-2551-0. http://hdl.handle.net/2078.1/150663

2. Braccini, Muriel; Dezellus, O.; Pardoen, Thomas. Controlling Adherence. In: Mechanics of Solid Interfaces , ISTE LTD and John Wiley & Sons, Inc.: (United Kingdom) London, 2012, p. Chapter V, 137-188. 978-1-84821-373-9. doi:10.1002/9781118561669.ch5. http://hdl.handle.net/2078.1/150664

3. Pardoen, Thomas; Pineau, A.. Failure Mechanisms of Metals. In: Comprehensive Structural Integrity Encyclopedia , Elsevier, 2007, p. Volume 2, Chapter 6, 130 pages. http://hdl.handle.net/2078.1/75535

4. Pardoen, Thomas; Besson, Jacques. Micromechanics-based models of ductile fracture. In: Local Approach to Fracture , Les Presses de l'Ecole des Mines (J. Besson editor): Paris, 2004, p. Chapter VIII, 221-264. 978-2-911762-55-0. http://hdl.handle.net/2078.1/75537