Academic literature on the topic 'Machines à mesurer tridimensionnelles'
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Journal articles on the topic "Machines à mesurer tridimensionnelles"
Fauque, D. "Protohistoire De La Machine A Mesurer Les Cliches Astronomiques." Symposium - International Astronomical Union 133 (1988): 53–57. http://dx.doi.org/10.1017/s0074180900139415.
Full textGrimaud, Emmanuel. "La face obscure de la clairvoyance. Petite histoire des machines à mesurer l’aura." Cahiers d'anthropologie sociale N° 17, no. 2 (2018): 152. http://dx.doi.org/10.3917/cas.017.0152.
Full textMessaoudi, Yassine, Jean-Loup Coudert, and Jean-Jacques Aknin. "Apport de la reconstruction tridimensionnelle à l’aide du logiciel 3DNEO® dans le traitement chirurgico-orthodontique des dents incluses." L'Orthodontie Française 84, no. 2 (May 30, 2013): 147–55. http://dx.doi.org/10.1051/orthodfr/2012028.
Full textDissertations / Theses on the topic "Machines à mesurer tridimensionnelles"
Hennebelle, François. "Détermination des incertitudes de mesures sur machines à mesurer tridimensionnelle : application aux engrenages." Paris, ENSAM, 2007. https://pastel.archives-ouvertes.fr/pastel-00003226.
Full textBecause measurands are perfectly defined in standards, Coordinate Measuring Machines (CMM) accreditation is possible for gears provided measurements uncertainties are assessed. In accordance with the Guide to the expression of Uncertainty in Measurement (GUM), our work is mainly based on the Monte Carlo method and linear or circular error separation techniques to differentiate defaults and quantify associated measurements uncertainties. Analysis of the CMM geometry effect on a circular ring or gear measurement shows that it is impossible to characterize completely the CMM geometry with a part supposed to be perfect. However, we set up a concept of “Equivalent defaults” characterizing the CMM geometry for the theoretical definition of the studied part. The probing systems used were assessed in order to compensate the identifiable systematic defaults and quantify associated uncertainties. Based on the example of a cylindrical gear, three different approaches are compared: the analysis of the CMM metrological characteristics, by error separation method and by comparison. This contribution in term of uncertainties measurements has numerous applications; for example the study of penetration rates and wear volumes of explanted total hip prostheses
Pairel, Éric. "Métrologie fonctionnelle par calibre virtuel sur machine à mesurer tridimensionnelle." Chambéry, 1995. http://www.theses.fr/1995CHAMS025.
Full textBourdet, Pierre. "Contribution à la mesure tridimensionnelle modèle d'identification géométrique des surfaces, métrologie fonctionnelle des pièces mécaniques, correction géométrique des machines à mesurer tridimensionnelles /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603332j.
Full textCloitre, Gabriel. "Contribution à la connaissance et à la modélisation des paramètres influant sur la capabilité des procédés de mesure tridimensionnels." Toulon, 2000. https://theses.hal.science/tel-00740375.
Full textThree-dimensional measuring machines have come into general use in big firms and among subcontractors. The enforcement of ISO 9000 standards and the ensuing capability calculations require a thorough knowledge of measurement uncertainty. In measuring machines, global uncertainty and the standards used are generally indicated. The measurement uncertainty of these different machines is given in the following for JA+bLJ:-A representing an accuracy uncertainty and bL a position uncertainty related to the length. The geometry and environment of these machines being currently taken into account by application programs, there remains many unknown parameters connected to the sensor :its length, diameter, speed, type and the number of points of the measured element. We aim at presenting a method permitting to quickly obtain the measurement uncertainty and the index of capability according to the operator's selected criteria; and rapidly get an index of capability closer to reality. Chapter 1 describes the present situation of measuring machines towards the IS09000 standards and the state-of-art equipement of this type. In chapter 2 an experimental study is carried out in order to determine the size of samples used in our study-In chapter 3 we decribe the experimental study and the modelling of the qualification of the sensor. Chapter4 presents the experimental study and the modelling of the basic element : the point, the straight line, the plane, the circle and the sphere. Finally, in chapter 5 we propose a general model for the calculation of measurement uncertainties and capabilities. The annex comprises the 3D machine and software, the standards, the calibrator! certificates, the values of the piece and the specifically developed application programmes
Bluteau, Hélène. "Contribution à l'amélioration de la qualité des mesures sur les machines à mesurer tridimensionnelles : surveillance, diagnostic et correction des défaillances." Cachan, Ecole normale supérieure, 1999. http://www.theses.fr/1999DENS0007.
Full textVaissière, Dimitri. "Métrologie tridimensionnelle des états de surface par microscopie confocale à champ étendu." Université Louis Pasteur (Strasbourg) (1971-2008), 2003. http://www.theses.fr/2003STR3A001.
Full textBoivin, Guillaume. "Conception de l'axe principal d'une machine à mesurer les coordonnées." Master's thesis, Université Laval, 2007. http://hdl.handle.net/20.500.11794/19473.
Full textMahmud, Mussa. "Outil d’aide au contrôle de spécifications géométriques de pièces mécaniques par la mesure 3D sans contact." Dijon, 2007. http://www.theses.fr/2007DIJOS066.
Full textWithin the framework of the Ph. D. GM- GC under title Computer aided inspection of geometrical specification of mechanical part without contact 3D Measurement, and within the team “metrology 3D” located in Auxerre, L. R. M. A. University of Burgundy. Within the framework of the three-dimensional measurement of mechanical part using without contact sensor, this work concerns the taking into account of the defects of the sensor in the strategy of measurement. Indeed, if technological projections in the field of the optical sensors make it possible to consider the dimensional check of the parts, their relative inaccuracy with respect to the sensors with contact requires optimizing the strategies of measurement compared to the specifications to be controlled. Thus, by developing a strategy of adequate digitalization taking of account the defects of the sensor, it is planned to minimize uncertainties of measurement and to approach the current performances of the sensors with contact. These defects can for example be associated at the distance sensor/piece-rates, with the orientation sensor/part and the work has consisted in the development, the writing and the implementation of an algorithm of simulation of trajectory compared to various parameters of the sensor and the geometrical specifications of the part. Lastly, they must lead to the automatic planning of trajectory of a transmitter without contact. The method that we implement is based on the notion of the visibility of the part. It consists in determining the directions for which all surfaces of the part are visible by the sensor. The approach consists of three successive phases. The first phase defines the visibility from the point of view of the laser. The second relates to the screening of the camera. And the third represents the total visibility of the sensor unit; i. E. Laser and camera associated. A chart of total visibility is built. From this one, positions and preferential orientations part are retained to carry out the inspection. This determination, under considerations within a metrological framework, must be done in the respect of the dimensional and geometrical specifications of the part while guaranteeing its complete digitalization. The developed approach which one thus seeks the complete automation of the planning of the trajectory. It represents a step of planning aid of the trajectory of digitalization under metrological considerations
Jalid, Abdelilah. "Contribution à l'évaluation des incertitudes liées aux résultats de mesure tridimensionnelle." Lille 1, 2007. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2007/50376-2007-29.pdf.
Full textCamboulives, Martin. "Étalonnage d'un espace de travail par multilatération." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLN024/document.
Full textThis thesis aims at developing calibration procedures and methods for measuring tools such as coordinate measuring machines (CMMs) and stereovision devices. This work is incorporated within the framework of a collaboration between the Laboratoire national de métrologie et d’essais (LNE) and the Automated Production Research Laboratory (LURPA). In the scope of this thesis, multilateration is qualified as sequential because it is carried out by a single tracking interferometer (Laser Tracer) that is placed in different positions during the calibration procedure. In order to assess the calibration uncertainties, the link to the length standards is obtained through the measured lengths provided by the interferometer. Each one of these measured lengths is linked to the kinematic chain parametric errors that cause the volumetric errors of the CMM or directly to the measured points coordinates. They are assessed thanks to the study of both the calibration procedure and the performance of each component that takes part in the calibration procedure.Performing multilateration to obtain the spatial coordinates of a point requires to know both the stand points from which the point is measured and the distances between the stand points and the measured point. Practically, the stand points are the Laser Tracer positions. The proposed method aims at identifying the Laser Tracer’s positions and dead-paths lengths first in order to build a reference measuring frame, then performing multilateration. Then, if the measuring device is a CMM, its kinematic chain parametric errors are identified. For this matter, we propose a specific procedure based on the LNE knowledge on CMM calibration carried out using hole-bars. The originality of the proposed method lies in the fact that the reference measuring frame and the measuring device errors are calculated independently from each other. Plus, when addressing the case of a CMM calibration, the kinematic chain parametric errors are extracted one by one when a global optimization algorithm is usually performed nowadays.We focus on the case of CMMs calibration and we propose a precise analysis of all the sources of errors. It includes factors which influence was not studied before. They appear to result from the fact that a single tracking interferometer is used to calibrate the CMM. A simulation module based on a Monte Carlo approach has been developed. It enables the study of the influence of each source of errors independently from the other ones. Hence, the relevance of a measuring strategy can be assessed beforehand. This module simulates the behaviour of both the CMM and the Laser Tracer to evaluate uncertainties. We propose two indicators to observe the relative influence of each uncertainty factor. The first one is linked to the reference frame that is built on the successive positions of the Laser Tracer. The second one represents the global uncertainty one the kinematic chain parametric errors. This uncertainty assessment module has been successfully used to highlight the importance of sources of errors which role used to not be studied.The calibration procedure and uncertainty assessment module we propose have been successfully applied to a 3-axis cartesian CMM in laboratory conditions. Plus, since the reference measuring frame and the kinematic chain parametric errors identification are performed separately, the method we propose can be applied to other measuring devices. We especially explain how to apply it in the case of a measuring device based on stereovision
Conference papers on the topic "Machines à mesurer tridimensionnelles"
Coorevits, Thierry, and François Hennebelle. "Typologie et conception des machines à mesurer tridimensionnelles : un état de l’art." In 17th International Congress of Metrology, edited by Bernard Larquier. Les Ulis, France: EDP Sciences, 2015. http://dx.doi.org/10.1051/metrology/20150013002.
Full textCatros, S. "A quoi servent les Bio-Imprimantes 3D ?" In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206601012.
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