Thierry Chotard - Academia.edu (original) (raw)

Uploads

Papers by Thierry Chotard

Research paper thumbnail of Preparation and thermomechanical characterization of poly(vinyl chloride) blends compatible with terpolymer-containing maleic anhydride

Journal of Applied Polymer Science, 2004

The present paper reports the preparation and thermo-mechanical characterization of epoxy resin f... more The present paper reports the preparation and thermo-mechanical characterization of epoxy resin from renewable resource materials viz. cardanol and furfural. The cardanol furfural based epoxy resin was prepared by reacting cardanol furfural based novolac resin with molar excess of epichlorohydrin, in basic medium, at 120°C. The cardanol furfural based novolac resin was synthesized by reacting cardanol and furfural in the molar ratios viz. 1.

Research paper thumbnail of Investigation of mechanical properties of MAX phases by acoustic emission technique

Research paper thumbnail of High Temperature Evaluation of Mechanical Properties of Refractory Castables : Impact of Eutectic Aggregates and Testing Methods

Research paper thumbnail of Raffinement de la technique de corrélation d'images numériques pour l'étude de la multi-fissuration des matériaux réfractaire

Research paper thumbnail of Synthèse de phases MAX carbures à base de Ti-, Zr- et Hf- par four à arc et SPS

National audienceLes phases MXènes sont des phases bi-dimensionnelles carbures ou nitrures dont l... more National audienceLes phases MXènes sont des phases bi-dimensionnelles carbures ou nitrures dont les propriétés particulières ont attiré l'attention dans des domaines tels que le stockage d'énergie [1,2], l'électronique [3,4] ou même la catalyse [5]. Ces phases sont synthétisées par ablation des phases MAX dont la flexibilité de composition permet l'optimisation de leurs propriétés et de celles des phases MXènes associées. Dans ces travaux, la synthèse de la phase MAX M2AlC par décharge électrique et Spark Plasma Sintering (SPS) à partir des poudres d'éléments M (métal de transition : Ti, Zr ou Hf), Al et C a été réalisée. Pour augmenter la proportion de la phase ciblée dans les échantillons et limiter la proportion de phases secondaires, les paramètres de synthèse ont été optimisés. L'optimisation de l'intensité de l'arc et la durée de chauffage dans le four à arc a été réalisée pour obtenir la composition désirée, c'est-à-dire avec une proportion...

Research paper thumbnail of Synthesis of MAX phases via SHS method

Research paper thumbnail of Influence of zirconia phase transformation on the thermo-mechanical behaviour of high zirconia refractories

Research paper thumbnail of Influence of sintering parameters of aluminum titanate (TiAl2O5) on microstructure and on thermomechanical properties

Research paper thumbnail of Carbon bonded refractory composites

Research paper thumbnail of A promising way to model refractory castables using the discrete element method

Research paper thumbnail of Diagnostic thermomécanique sous flux solaire concentré : quel dispositif

Research paper thumbnail of Synthesis of Ti-, Zr- and Hf- containing MAX carbide phases by electric arc furnace and by SPS

HAL (Le Centre pour la Communication Scientifique Directe), Jun 16, 2019

Research paper thumbnail of Study of the plasticity induced by the zirconia phase transformation in high zirconia refractories

HAL (Le Centre pour la Communication Scientifique Directe), Sep 15, 2015

International audienc

Research paper thumbnail of Characterization of the anisotropic grain coarsening in aluminium titanate ceramic

HAL (Le Centre pour la Communication Scientifique Directe), 2011

International audienc

Research paper thumbnail of Micromechanical modelling of magnesia/spinel refractories: how to account of the effect of thermal history on mechanical behaviour

HAL (Le Centre pour la Communication Scientifique Directe), Jul 1, 2015

International audienc

Research paper thumbnail of Strain field measurements: Novel engineering approach to enrich the characterization of refractories

HAL (Le Centre pour la Communication Scientifique Directe), Sep 28, 2016

International audienc

Research paper thumbnail of Preliminary damage localization testing on SiC solar receiver using non destructive acoustic methods

Research paper thumbnail of Report on preliminary damage localization testing on SiC Solar receiver using acoustic emission

Materials used in solar receivers are exposed to high stresses, i.e. high temperatures (up to 100... more Materials used in solar receivers are exposed to high stresses, i.e. high temperatures (up to 1000° C in current solar towers, 1400°C for next generations, resp. 350 and 700°C for linear concentrators); high spatial thermal gradients (mainly due to the non-uniform concentrated solar irradiation) and high dynamic thermal gradient (e.g. fast during cloud passing or slow due to the daily cycling from dawn till dusk). Due to these very severe conditions, the materials degrade over time, their properties change, leading to reduced performance and ultimately to the failure and the ruin of the associated structure, increasing the cost of operation. Accurate in-situ measurements are required in order to select the materials (development and qualification stages with SFERA-III Research Infrastructures) or improve their lifetime and the optimal operation of a solar plant (commercial stage). However, the health evaluation of solar receivers is typically observed subjectively during downtime at...

Research paper thumbnail of In situ thermo-mechanical diagnostics of materials subjected to high solar flux: Test device development

Research paper thumbnail of New Solar Setup With Acoustic Diagnostic Techniques For Csp Materials. Comparison Of The Proposed Behavior Model With The Experimental Results From The Developed Test Bed

A promising route toward affordable and efficient solar energy conversion lies in the development... more A promising route toward affordable and efficient solar energy conversion lies in the development of the high temperature Concentrated Solar Power (CSP) tower. The extreme thermal stress conditions to which the tower receivers may be submitted raise the question of the ability of these components to efficiently perform over extended periods of time. Conventional methods commonly used to assess the mechanical stability and lifetime of these components involve laboratory testing, which suffers from the fundamental inability of these methods to effectively reproduce the real operating conditions. In this work, we suggest an original set-up based upon the use of acoustic emission for in-situ thermomechanical investigation of receiver materials exposed to concentrated solar irradiation, named IMPACT (In-situ thermo-Mechanical Probe by ACoustic Tracking). The ability of this set-up to precisely track the nature, the location and the dynamics of mechanical defects in the receiver material ...

Research paper thumbnail of Preparation and thermomechanical characterization of poly(vinyl chloride) blends compatible with terpolymer-containing maleic anhydride

Journal of Applied Polymer Science, 2004

The present paper reports the preparation and thermo-mechanical characterization of epoxy resin f... more The present paper reports the preparation and thermo-mechanical characterization of epoxy resin from renewable resource materials viz. cardanol and furfural. The cardanol furfural based epoxy resin was prepared by reacting cardanol furfural based novolac resin with molar excess of epichlorohydrin, in basic medium, at 120°C. The cardanol furfural based novolac resin was synthesized by reacting cardanol and furfural in the molar ratios viz. 1.

Research paper thumbnail of Investigation of mechanical properties of MAX phases by acoustic emission technique

Research paper thumbnail of High Temperature Evaluation of Mechanical Properties of Refractory Castables : Impact of Eutectic Aggregates and Testing Methods

Research paper thumbnail of Raffinement de la technique de corrélation d'images numériques pour l'étude de la multi-fissuration des matériaux réfractaire

Research paper thumbnail of Synthèse de phases MAX carbures à base de Ti-, Zr- et Hf- par four à arc et SPS

National audienceLes phases MXènes sont des phases bi-dimensionnelles carbures ou nitrures dont l... more National audienceLes phases MXènes sont des phases bi-dimensionnelles carbures ou nitrures dont les propriétés particulières ont attiré l'attention dans des domaines tels que le stockage d'énergie [1,2], l'électronique [3,4] ou même la catalyse [5]. Ces phases sont synthétisées par ablation des phases MAX dont la flexibilité de composition permet l'optimisation de leurs propriétés et de celles des phases MXènes associées. Dans ces travaux, la synthèse de la phase MAX M2AlC par décharge électrique et Spark Plasma Sintering (SPS) à partir des poudres d'éléments M (métal de transition : Ti, Zr ou Hf), Al et C a été réalisée. Pour augmenter la proportion de la phase ciblée dans les échantillons et limiter la proportion de phases secondaires, les paramètres de synthèse ont été optimisés. L'optimisation de l'intensité de l'arc et la durée de chauffage dans le four à arc a été réalisée pour obtenir la composition désirée, c'est-à-dire avec une proportion...

Research paper thumbnail of Synthesis of MAX phases via SHS method

Research paper thumbnail of Influence of zirconia phase transformation on the thermo-mechanical behaviour of high zirconia refractories

Research paper thumbnail of Influence of sintering parameters of aluminum titanate (TiAl2O5) on microstructure and on thermomechanical properties

Research paper thumbnail of Carbon bonded refractory composites

Research paper thumbnail of A promising way to model refractory castables using the discrete element method

Research paper thumbnail of Diagnostic thermomécanique sous flux solaire concentré : quel dispositif

Research paper thumbnail of Synthesis of Ti-, Zr- and Hf- containing MAX carbide phases by electric arc furnace and by SPS

HAL (Le Centre pour la Communication Scientifique Directe), Jun 16, 2019

Research paper thumbnail of Study of the plasticity induced by the zirconia phase transformation in high zirconia refractories

HAL (Le Centre pour la Communication Scientifique Directe), Sep 15, 2015

International audienc

Research paper thumbnail of Characterization of the anisotropic grain coarsening in aluminium titanate ceramic

HAL (Le Centre pour la Communication Scientifique Directe), 2011

International audienc

Research paper thumbnail of Micromechanical modelling of magnesia/spinel refractories: how to account of the effect of thermal history on mechanical behaviour

HAL (Le Centre pour la Communication Scientifique Directe), Jul 1, 2015

International audienc

Research paper thumbnail of Strain field measurements: Novel engineering approach to enrich the characterization of refractories

HAL (Le Centre pour la Communication Scientifique Directe), Sep 28, 2016

International audienc

Research paper thumbnail of Preliminary damage localization testing on SiC solar receiver using non destructive acoustic methods

Research paper thumbnail of Report on preliminary damage localization testing on SiC Solar receiver using acoustic emission

Materials used in solar receivers are exposed to high stresses, i.e. high temperatures (up to 100... more Materials used in solar receivers are exposed to high stresses, i.e. high temperatures (up to 1000° C in current solar towers, 1400°C for next generations, resp. 350 and 700°C for linear concentrators); high spatial thermal gradients (mainly due to the non-uniform concentrated solar irradiation) and high dynamic thermal gradient (e.g. fast during cloud passing or slow due to the daily cycling from dawn till dusk). Due to these very severe conditions, the materials degrade over time, their properties change, leading to reduced performance and ultimately to the failure and the ruin of the associated structure, increasing the cost of operation. Accurate in-situ measurements are required in order to select the materials (development and qualification stages with SFERA-III Research Infrastructures) or improve their lifetime and the optimal operation of a solar plant (commercial stage). However, the health evaluation of solar receivers is typically observed subjectively during downtime at...

Research paper thumbnail of In situ thermo-mechanical diagnostics of materials subjected to high solar flux: Test device development

Research paper thumbnail of New Solar Setup With Acoustic Diagnostic Techniques For Csp Materials. Comparison Of The Proposed Behavior Model With The Experimental Results From The Developed Test Bed

A promising route toward affordable and efficient solar energy conversion lies in the development... more A promising route toward affordable and efficient solar energy conversion lies in the development of the high temperature Concentrated Solar Power (CSP) tower. The extreme thermal stress conditions to which the tower receivers may be submitted raise the question of the ability of these components to efficiently perform over extended periods of time. Conventional methods commonly used to assess the mechanical stability and lifetime of these components involve laboratory testing, which suffers from the fundamental inability of these methods to effectively reproduce the real operating conditions. In this work, we suggest an original set-up based upon the use of acoustic emission for in-situ thermomechanical investigation of receiver materials exposed to concentrated solar irradiation, named IMPACT (In-situ thermo-Mechanical Probe by ACoustic Tracking). The ability of this set-up to precisely track the nature, the location and the dynamics of mechanical defects in the receiver material ...

Log In