Academic literature on the topic 'Courants de Foucault'
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Journal articles on the topic "Courants de Foucault"
Condoure, J. "Contrôle non destructif par courants de Foucault." Matériaux & Techniques 76, no. 9-10 (1988): 13–16. http://dx.doi.org/10.1051/mattech/198876090013.
Full textBouillault, F., and A. Razek. "Courants de Foucault dans les pièces polaires d'une machine synchrone." Revue de Physique Appliquée 21, no. 2 (1986): 181–85. http://dx.doi.org/10.1051/rphysap:01986002102018100.
Full textAknin, P., F. Monteil, and D. Placko. "Modélisation d'une structure multicapteur à courants de Foucault destinée à l'analyse de profil." Revue de Physique Appliquée 24, no. 2 (1989): 227–42. http://dx.doi.org/10.1051/rphysap:01989002402022700.
Full textMuller, J. L. "Détection des défauts de surface sur les demi-produits chauds par courants de Foucault." Revue de Métallurgie 84, no. 6 (June 1987): 483–86. http://dx.doi.org/10.1051/metal/198784060483.
Full textPichon, L., M. Ayoub, and A. Razek. "Comparaison de techniques mixtes pour le calcul de courants de Foucault en géométrie axisymétrique." Revue de Physique Appliquée 24, no. 11 (1989): 1049–56. http://dx.doi.org/10.1051/rphysap:0198900240110104900.
Full textBouillault, F., Z. Ren, and A. Razek. "Modélisation tridimensionnelle des courants de Foucault à l'aide de méthodes mixtes avec différentes formulations." Revue de Physique Appliquée 25, no. 7 (1990): 583–92. http://dx.doi.org/10.1051/rphysap:01990002507058300.
Full textLong, Cung Thanh, Pierre-Yves Joubert, and Eric Vour'ch. "Approche multifréquence à courants de Foucault pour l'évaluation de l'écartement entre pièces d'un assemblage aéronautique." Instrumentation Mesure Métrologie 10, no. 1-2 (June 28, 2010): 33–52. http://dx.doi.org/10.3166/i2m.10.1-2.33-52.
Full textDavid, Bernard, Claude Cherpentier, Michel Pigeon, and J. C. Lemarquis. "Examen par courants de Foucault multifréquence des tubes de GV de Superphénix à 150°C." Revue Générale Nucléaire, no. 3 (May 1990): 218–20. http://dx.doi.org/10.1051/rgn/19903218.
Full textVourc'h, Éric, Thierry Bore, Caifang Cai, and Romain Soulat. "Reconstruction de fissures 2D à partir d’images courants de Foucault utilisant un modèle direct semi-analytique." Instrumentation Mesure Métrologie 15, no. 3-4 (December 30, 2016): 129–38. http://dx.doi.org/10.3166/i2m.15.3-4.129-138.
Full textBour, J. C., E. Zubiri, P. Vasseur, and A. Billat. "Étude de la répartition des courants de Foucault pulsés dans une configuration de contrôle non destructif." Journal de Physique III 6, no. 1 (January 1996): 7–22. http://dx.doi.org/10.1051/jp3:1996112.
Full textDissertations / Theses on the topic "Courants de Foucault"
Real, Vianney. "Un problème de transmission électromagnétique : l'expérience des courants de Foucault." Thesis, Amiens, 2015. http://www.theses.fr/2015AMIE0021/document.
Full textThis thesis is about Non Destructive Testing by eddy currents. The goal is to develop new methods to compute the impedance variation of emitting coil placed over a conductive plate, possibly containing cracks. Standard methods require volume finite element meshes. This usually implies a computation cost and data storage high. In this thesis, we consider a solution to the problem by choosing to see is as a transmission problem on the interface between the conducting plate and the air containing the coil. When the conductor has no crack, we develop an approximate method to compute the impedance variation of a coil placed on the conductive plate. Applying this method only requires inverting sparse linear systems, this reduces the computation cost and the data storage requirements. If the plate containing a crack, the crack modeled as fictive current charge. After formulating the problem this way, the difficult part is to compute the fictive charge. We offer a method to compute it when the conducting plate has a high conductivity. It is based on asymptotic developments for high wave numbers
ZORGATI, RIADM. "Imagerie par courants de foucault. Application au controle non destructif." Paris 7, 1990. http://www.theses.fr/1990PA077233.
Full textWeber, Patrick. "Application des courants de Foucault pulses au contrôle non destructif." Lyon, INSA, 1990. http://www.theses.fr/1990ISAL0047.
Full text[This contribution describes a pulsed eddy current test equipment developed for defect detection in metallic materials and especially in austenitic steels. Two simplified models are used to describe the electromagnetic phenomena during control The exciting and receiving circuits,- as well as the probe coil arrangements, optimized to increase the depth detection limit or the transverse resolution power, are presented. Signal processing and analysis methods, adapted to pulsed eddy currents have been developed to detect the defect and characterize its depth. Applications to thickness measurements and defect detection are also outlined. ]
Sakellaris, Ioannis. "Modélisation des régions minces en présence de courants de Foucault." Grenoble INPG, 1992. http://www.theses.fr/1992INPG0046.
Full textZaoui, Abdelhalim. "Contribution à la modélisation du CND par matrice de capteurs à courants de Foucault." Nantes, 2008. http://www.theses.fr/2008NANT2073.
Full textThe non destructive eddy current testing is widely used in inspection of conductive materials. The use of arrayed sensors assures the control of wide surfaces and reduces the measurement noise due to the sensor displacement. On the other hand, the miniaturisation of sensors gives a best spatial resolution. In the case of sampled functioning, the modelling techniques are the same as those used for a single sensor. However, the simultaneous functioning of the sensors, while reducing the time response, requires the implementation of new modelling techniques. In this thesis, the models of single sensor system are exploited in the aim to be generalized for the case of arrayed configuration. The principle of superposition is applied to the results obtained for a single sensor system using the 2D finite element method. The 3D distribution of the electromagnetic source field is then rapidly reconstituted. A perturbation method is used in order to calculate the reaction field. This technique, when reducing the 3D computation domain to the region neighbouring the defect, brings a gain in time computing and space memory. With the aim of getting a fast direct model adapted to the iterative inversion, the ideal crack model based on the dyadic Green’s functions is generalized to the case of arrayed sensors. Finally, an inversion method using genetic algorithms is applied to reconstitute the defect geometry. The proposed models are then validated via 3D finite element computation and experimental measurements
Jiang, Zixian. "Contrôle non destructif via des sondes courants de Foucault : nouvelles approches." Phd thesis, Ecole Polytechnique X, 2014. http://pastel.archives-ouvertes.fr/pastel-00943613.
Full textVasseur, Pascal. "Etude de faisabilite d'un capteur intelligent de deplacement a courants de foucault." Reims, 1991. http://www.theses.fr/1991REIM5014.
Full textGAUTHIER, BECHONNET SEVERINE. "Resolution et mise en oeuvre d'un modele tridimensionnel des courants de foucault." Clermont-Ferrand 2, 1998. http://www.theses.fr/1998CLF22038.
Full textAhmed, Shamim. "Développement d’une méthodologie robuste d’inversion dédiée au CND par courants de Foucault." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS043/document.
Full textThe research activity of the PhD thesis focuses on the study and development of innovative strategies for the solution of inverse problems arising in the field of Non-Destructive Testing and Evaluation (NDT-NDE), based on the use of statistical learning theory. Generally speaking, the objective of the optimization stage is the retrieval of the unknown parameters within the studied electromagnetic scenario. In the case of NDT-NDE, the optimization problem, in terms of parameters to estimate, is divided into three stages, namely detection, localization and characterization. This work mainly addresses localization and characterization of crack(s) and/or estimation of probe(s) parameters. Unknown parameters, constituting a subset of the parameters set describing the electromagnetic scenario, are robustly estimated using several approaches. Standard optimization approaches are based on the minimization, by means of iterative approaches like stochastic and/or deterministic algorithms, of a cost function describing the discrepancy between measurements and prediction. This thesis considers the estimation problem in a machine learning perspective, adopting well known Learning-By-Example (LBE) paradigm. In a so-called offline phase, a surrogate inverse model is first fitted on a set of known input/output couples, generated through numerical simulations. Then, in a so-called online phase, the model predicts unknown outputs (the parameters of interest) based on new inputs (measured NDT signals) in quasi-real time. When considering practical inspection situations, due to the large number of variables involved (known as curse of dimensionality), obtaining an accurate and robust model is not a trivial task. This thesis carries out a deep and systematic study of different strategies and solutions to achieve simultaneously good accuracy and computational time efficiency in the parameters estimation. Moreover, a particular emphasis is put on the different approaches adopted for mitigating the curse of dimensionality issue. The proposed LBE schema has been tested with success on a wide set of practical problems, using both synthetic noisy data and experimental measurements
Le, Diraison Yohan. "Imagerie à courants de Foucault pour l'évaluation non-destructive de structures rivetées aéronautiques." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2008. http://tel.archives-ouvertes.fr/tel-00421940.
Full textBooks on the topic "Courants de Foucault"
General Dynamics Corporation. Convair Division, ed. Nondestructive testing, eddy current: Classroom training handbook. Harrisburg, NC: PH Diversified, Inc., 1997.
Find full textBook chapters on the topic "Courants de Foucault"
Joubert, Pierre-Yves, Zhou Xi, Yohan Le Diraison, and Eric Vourc’h. "Dispositif instrumental d’imagerie à courants de Foucault pulsés." In Instrumentation et Interdisciplinarité, 87–92. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1206-6-011.
Full textJoubert, Pierre-Yves, Zhou Xi, Yohan Le Diraison, and Eric Vourc’h. "Dispositif instrumental d’imagerie à courants de Foucault pulsés." In Instrumentation et Interdisciplinarité, 87–92. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1206-6.c011.
Full textConference papers on the topic "Courants de Foucault"
Bausson, Sébastien, and Julien Cadith. "Evaluation de techniques de screening par Courants de Foucault Pulsés et Ultrasons par sonde rouleau multiéléments." In Contrôles et essais non destructifs : nouveaux besoins et innovations. Les Ulis, France: EDP Sciences, 2018. http://dx.doi.org/10.1051/jtsfen/2018con03.
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