Littérature scientifique sur le sujet « Capteur de déformation »
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Articles de revues sur le sujet "Capteur de déformation"
Dusch, Y., C. Ghouila Houri, A. Mazzamurro, G. Boussatour, H. Dahmani, O. Bou Matar, V. Maurice, P. Pernod et A. Talbi. « Mise en oeuvre de capteurs RF-MEMS acoustiques pour l’industrie 4.0 ». J3eA 21 (2022) : 1019. http://dx.doi.org/10.1051/j3ea/20221019.
Texte intégralChaumont, Jean-Michel, et Anne-Laure Wibrin. « Traite des Noirs, traite des Blanches : même combat ? » La sexualité à vendre ou à acheter, no 43 (3 mai 2011) : 121–32. http://dx.doi.org/10.7202/1002483ar.
Texte intégralLeduc, Dominique, Yann Lecieux, Pierre-Antoine Morvan et Cyril Lupi. « Architecture de capteurs à fibre optique pour la mesure simultanée des déformations axiales et radiales ». Instrumentation Mesure Métrologie 13, no 1-2 (30 juin 2013) : 9–30. http://dx.doi.org/10.3166/i2m.13.1-2.9-30.
Texte intégralSerratrice, Jean François. « Suivi des déformations du massif rocheux sous la fondation de la pile VII du Pont du Gard ». Revue Française de Géotechnique, no 164 (2020) : 2. http://dx.doi.org/10.1051/geotech/2020023.
Texte intégralVergniault, Christophe, Edouard Buchoud, Joséphine Boisson-Gaboriau et Amélie Hallier. « Application des méthodes géophysiques pour le diagnostic de l’aléa cavités sur des ouvrages de grands linéaires, en contexte ferroviaire et hydraulique ». Revue Française de Géotechnique, no 172 (2022) : 3. http://dx.doi.org/10.1051/geotech/2022006.
Texte intégralSamet, Naïm, Antoine Valentin, Quentin Julien, Fan Zhang et Hélène Petitpré. « L’intelligence artificielle au service de la caractérisation des matériaux (traitements thermiques et contraintes résiduelles) ». e-journal of nondestructive testing 28, no 9 (septembre 2023). http://dx.doi.org/10.58286/28462.
Texte intégralDalmora, André, Alexandre Imperiale, Sébastien Imperiale et Philippe Moireau. « Solveur numérique générique pour la modélisation de l'influence des contraintes mécaniques sur la propagation des ondes guidées pour les applications SHM ». e-journal of nondestructive testing 28, no 9 (septembre 2023). http://dx.doi.org/10.58286/28536.
Texte intégralThèses sur le sujet "Capteur de déformation"
Merdassi, Adel. « Développement d'un capteur de déformation MEMS sans fil ». Mémoire, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/1628.
Texte intégralVilain, Romain. « Conception et essai d'un capteur de déformation dans la glace ». Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/26607/26607.pdf.
Texte intégralGuyard, Romain. « Capteur à fibre optique pour la mesure de déformation au sein des matériaux ». Nantes, 2015. https://archive.bu.univ-nantes.fr/pollux/show/show?id=6e451d89-fed7-4980-a018-fbdae1b0090c.
Texte intégralThe aim of this thesis is the design of a new fiber optic sensor for the strain measurement inside materials. Fiber Bragg grating strain sensors are usually glued on the surface of the monitored structure. Their use like embedded strain sensor may be unadapted. Indeed, in these circumstances, a mechanical coupling between the sensor and the host material changes the transverse strain of the fiber. The transverse strain becomes unknown. Consequently, the only measurement of the Bragg wavelength shift is not enough to estimate both axial and transverse strains. In order to decorrelate these strains, we propose a sensor architecture based on the juxtaposition of a Bragg grating (FBG) and of a long period grating (LPG). The thesis work consist in finding the optimal architecture so that the sensor response to strain is linear and the measurement resolution is identical to the resolution of usual fiber optic sensors. During the sensor design, some usual results on LPG have been studied again. Some original optical properties of cladding modes have been revealed. It has been shown that the shape of these modes changes significantly with the cladding radius of the fiber and that there are critical cladding radii for which some modes have the same transverse intensity distribution. A statistical study has been carried out on the strain sensitivities of LPG. General behaviors of LPG strain sensors have been highlighted. Especially, the crosssensitivities can be neglected and the sensitivities are mainly influenced by the period of grating and the cladding radius of the fiber. When the sensor is embedded inside the material, it may be bent. The bending effects on the gratings responses have been studied using the finite element as well as the semi analytical methods. It has been shown that the bending sensitivity of FBG depends on a balance mechanism between the effective refractive index change and the coupling coefficient change of the coupled modes and that the average index variation of the grating plays a key role in the amplitude and the sign of this sensitivity. A similar mechanism has been highlighted for LPG
Mengue, M'Owono Prince Warel. « Capteurs à ondes élastiques de déformation, température et champ magnétique directement intégrés sur pièces métalliques : applications en surveillance de santé des structures ». Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0085.
Texte intégralStructural integrity research, also called structural health monitoring (SHM), enables the implementation of a damage detection strategy for aerospace, civil, and mechanical infrastructures. These systems typically consist of a network of smart sensors that enable the collection of data across the entire structure. In addition, the increasing use of connected objects (IoT) in the market is making these systems more and more attractive. Therefore, it is important to develop sensors that are responsive to the external environment, have innovative features, and enable continuous monitoring of the structure. Surface acoustic wave devices have a wide range of innovative properties. Their sensitivity to external disturbances allows continuous measurement of the various measurands (temperature, pressure, deformation, etc.). Moreover, these devices can be passive (without battery), remotely interrogatable (wireless) and self-protected (without packaging). The implementation of conventional SAW sensors is usually on piezoelectric materials, which involves the use of adhesive to attach the sensor to the part under test. The adhesive leads to the need to perform a certain number of complex techniques, in addition to a calibration of the structure to be fixed before any type of measurement. This first leads to measurement errors caused by the relaxation of the adhesive in inhospitable and variable environments. In a second step, a delay is caused in the measurement of the deformation stresses, which varies according to the thickness and environment of the measurements. In a third step, sensor lift-off is often very rare. Therefore, the aim of this work is to develop sensors that combine SAW devices with the structural health monitoring system for the measurement of deformation, temperature and magnetic field integrated directly on industrial metal parts
Poussier, Sylvain. « Contribution à la conception d'un capteur intelligent de déformation à base de systèmes programmables sur puce et de jauges de contraintes ». Nancy 1, 2002. http://www.theses.fr/2002NAN10247.
Texte intégralThe thesis is about a universal strain measurement system for embedded application. First chapter provides a general presentation of the extensometry methodologies and the strain gage sensors. Classical thermal compensation limitations are proven and the necessity of self-adaptation of the treatment to the sensor and his environment is set out. The hardware and software architecture is discussed and a study of CODESIGN methodology is exposed. Demonstrator prototype is detailed. Several processes for self-adaptation are enounced and evaluated. Finally, we expound the second version of the prototype and we give our perspective like uses of neural network or blind source separation
Aubert, Sébastien. « Étude d’un résonateur phononique à onde de surface pour des applications de capteurs de température et de déformation ». Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD008.
Texte intégralSurface acoustic wave resonators can be used as sensors for temperature and strain monitoring. The idea is to take advantage of the variation in frequency of the resonators that depends on the measured quantity. Currently, the technology used, based on Bragg mirrors, shows its limits in terms of performance at high frequencies (above 1 GHz).The aim of this PhD thesis work was to study the potential and performance of a new technology based on the use of phononic crystals. This technology refers to periodically arranged materials, acting on acoustic waves’ propagation. Phononic crystals represent an alternative to classical Bragg mirror technology, allowing an omnidirectional spatial confinement and an additional degree of freedom for optimization.A square lattice pillar based phononic crystal was theoretically and experimentally investigated. Based on the combination of Bragg scattering and local resonances, we were able to create acoustic band gaps that could be exploited. The operating frequency considered was about 450 MHz, using nickel electroplating to fabricate pillars. In this frequency range, we demonstrated the presence of acoustic band gaps using wide band electrical characterization. A phononic resonator was designed, fabricated and characterized by electrical and optical methods. A quality factor of about 950 was obtained, with total reflection of acoustic wave reached within less than ten periods. Comparison of measurements and simulations allowed us to explain the acoustic phenomena involved
Triollet, Sébastien. « Développement d’un capteur à fibre optique à base de réseaux de Bragg superposés de courtes et de longues périodes : application à la mesure discriminée de température et de déformation ». Thesis, Saint-Etienne, 2010. http://www.theses.fr/2010STET4018/document.
Texte intégral[Optical Fibre Sensors present some interesting qualities when considering its size and weight relatively light, which lead to a low intrusivity of the sensor in a material (a composite structure). These sensors are insensitive to electromagnetic phenomenon, stable and long lasting with time, but sensitive to several solicitations such as temperature, strain and pressure hence a real need of discrimination. Among these sensors, we may discern the Bragg gratings: the Long Period Grating one (LPG) and the Fibre Bragg Grating (FBG) one. This thesis work reports the development of an optical fibre sensor based on two superimposed Bragg gratings: LPG and FBG for measuring and discriminating temperature and strain. Several studies are reported in literature without getting a real condition use. That's why we propose a parameter E, which stand for the discrimination efficiency leading to a possible comparison of the existing techniques and highlight the quite good potential of superimposed Bragg gratings. The settings of such a structure are given in this thesis report and consist in writing LPG first, then FBG over the entire length of the LPG, which also gives multiplexing possibilities. Strain and temperature calibration steps give sensitivities errors of 2% for temperature and 3% for strain, which lead to estimated errors on measured strain and temperature of 0.3°C and 3 microstrain respectively. In an application point of view, the sensor has been used for the instrumentation of a metallic structure subjected to a variation of temperature and strain applied simultaneously. The results exhibit a maximum error of 0.4°C and 3me for temperature and strain respectively, which is a good validation of the sensor for structural control and monitoring purpose. The second studied application is about instrumentation of glass/epoxy composite specimen for monitoring manufacturing processes: VARTM (Vacuum Assisted Resin Transfer Moulding) and LRI (Liquid Resin Infusion), for which temperature and strain have been monitored with the superimposed Bragg gratings based sensor. Dielectric analyses have also been performed during those processes in order to compare and validate our results]
Pedro, Luc Sèdji. « De l'étude du comportement mécanique de sols hétérogènes modèles à son application au cas des sols naturels ». Phd thesis, Ecole des Ponts ParisTech, 2004. http://pastel.archives-ouvertes.fr/pastel-00001295.
Texte intégralTriollet, Sébastien. « Développement d'un capteur à fibre optique à base de réseaux de Bragg superposés de courtes et de longues périodes : application à la mesure discriminée de température et de déformation ». Phd thesis, Université Jean Monnet - Saint-Etienne, 2010. http://tel.archives-ouvertes.fr/tel-00688229.
Texte intégralDupont, James. « Comportements de Capteurs à Fibres Optiques, noyés ou fixés en surface d'ouvrages en béton ». Phd thesis, Ecole des Ponts ParisTech, 2002. http://tel.archives-ouvertes.fr/tel-00001971.
Texte intégralChapitres de livres sur le sujet "Capteur de déformation"
Asch, Georges, Pierre Desgoutte et Alain Mazeran. « 8 • Capteurs de déformation ». Dans Les capteurs en instrumentation industrielle, 435–67. Dunod, 2017. http://dx.doi.org/10.3917/dunod.asch.2017.01.0435.
Texte intégralMorvan, P. A., Y. Lecieux, D. Leduc, C. Lupi, P. Casari et M. Roche. « Capteurs de déformations à fibre optique pour le suivi des structures : Quelle grandeur est réellement mesurée et avec quelle rigueur ? » Dans Instrumentation et Interdisciplinarité, 393–98. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1206-6-050.
Texte intégralMorvan, P. A., Y. Lecieux, D. Leduc, C. Lupi, P. Casari et M. Roche. « Capteurs de déformations à fibre optique pour le suivi des structures : Quelle grandeur est réellement mesurée et avec quelle rigueur ? » Dans Instrumentation et Interdisciplinarité, 393–98. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1206-6.c050.
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