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Academic literature on the topic 'Anodes – Propriétés électriques – Mesure'
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Dissertations / Theses on the topic "Anodes – Propriétés électriques – Mesure"
Zhang, Wei. "Performance of lead anodes used for zinc electrowinning and their effects on energy consumption and cathode impurities." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27021/27021.pdf.
Full textHammi, Tarik. "Étude de méthodes de mesures et réalisation d'un banc de test pour l'évaluation des propriétés électrostatiques des textiles." Lille 1, 2005. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2005/50376-2005-Hammi.pdf.
Full textLonguemart, Stéphane. "Nouvelle méthodologie pour la mesure des paramètres thermiques et pyroélectriques de matériaux solides pyroélectriques et cristaux liquides ferroélectriques." Littoral, 2002. http://www.theses.fr/2002DUNK0095.
Full textPyroelectric materials possess the remarkable property to generate an electric current when their average temperature is subject to variations. They are widely used in radiation detection devices or for infrared imaging. The response of the pyroelectric material to a light excitation is directly connected to its pyroelectric coefficient and its thermal parameters. The aim of this work was to propose a new methodology which allows the simultaneous measurement of the pyroelectric coefficient and the thermal parameters of pyroelectric materials. The proposed method is based on the analysis of the pyroelectric signal generated by the pyroelectric sample when it is irradiated by an intensity modulated radiation source. Different procedures have been presented for the determination of the thermal parameters of the pyroelectric material from the amplitude or the phase of the pyroelectric signal. In particular, two procedures not using frequency scans are proposed for the study of the thermal parameters as a function of temperature. The pyroelectric coefficient temperature dependence can be obtained from the amplitude of the pyroelectric signal. The methodology presented in this work is non destructive : the pyroelectric material can be used after its characterization or for other measurements. The validation of the method on solid pyroelectric materials and the first results obtained for a ferroelectric liquid crystal film shows that the method can be used for the characterization of pyroelectric materials of different types
Salome, Francis. "Contribution à l'étude de nouvelles méthodes de mesure des paramètres électriques et thermiques des matériaux : influence de l'humidité sur les propriétés électriques et thermiques des matériaux non métalliques." Lille 1, 1986. http://www.theses.fr/1986LIL10082.
Full textHadid, Mohammed Abderahmane. "Conception d'un dispositif de mesure des charges injectées dans les polymères sous champ alternatif divergent : application au vieillissement électrique." Toulouse 3, 1992. http://www.theses.fr/1992TOU30249.
Full textAbry, Jean-Christophe. "Suivi in situ d'endommagement dans les matériaux composites carbone/époxy par mesure des variations de propriétés électriques." Aix-Marseille 1, 1998. http://www.theses.fr/1998AIX11056.
Full textYousefi, Somaiieh. "Assessing the feasibility of applying ERT for the evaluation of electrical conductivity of green carbon anode." Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/27470.
Full textThe quality of anode especially from electrical resistivity aspect is important to the aluminum industry. The higher the current can pass through the anode by the means of lower electrical resistivity, the lower the energy would be lost. The purpose of present project is to evaluate the quality of anode from the electrical properties point of view. Anode consists of three phases; coke particles, binder matrix (pitch) and porosities or cracks. The electrical resistivity of anode is highly affected by the size (size distribution) and shape (shape distribution) of these phases. Therefore, it is essential to understand the conduction mechanisms of anode and to reveal the effect of anode microstructure on its electrical resistivity. In the present study, we attempted to create a map of electrical resistivity (or conductivity) of anode regarding the distribution of the phases. Feasibility of using Electrical Resistance Tomography (ERT) was assessed as a method for mapping the electrical resistivity distribution in carbon anode. The map is a computed image of the distribution of electrical resistance in 2-D slice through a conducting region. ERT is a process of estimating from voltage measurements at the domain of interest. ERT method involves with putting electrodes at the boundary, injecting the current to each pair and measuring the voltage from the remaining ones until each electrode once considered as the injecting electrode. While the measured voltages provide a matrix of measurements, the electrical potential inside the material would be calculated using the Finite Element Method (FEM). By comparing the measured and calculated voltages and minimizing the error and utilizing reconstruction algorithms, the conductivity image of the desired surface will be obtained. In the final analysis, the electrical images by ERT were evaluated using SEM microscope and XRF analysis. The comparison suggested a good correlation between the electrical images and the distribution of the phases in carbon anode.
Martin, Marie-Hélène. "Caractérisation des interfaces acier-fonte-carbone de l'ensemble anodique d'une cuve d'aluminium." Thesis, Université Laval, 2014. http://www.theses.ulaval.ca/2014/30645/30645.pdf.
Full textThe aluminum industry faces economical headwinds, thus needing to reduce its operating costs. The project studies specifically energy losses at anode sealing location. Experiments were conducted from room conditions up to the maximum capacity of the bench test. Laboratory work was completed using tri-material samples (made in such a way to replicate accurately reality) and an innovative bench test using magnetic induction as a source of heat that enables minimal heat-up time and sample oxidation during experiments. Non-linear regression was then used to retrieve a model from laboratory results. Analysis showed that a power model represents accurately the interfaces behavior from room to operation conditions. Comparison with literature showed that the order of magnitude is the same but results are not similar. This observation can be explained by the use of slightly different materials and also due to the use of a different experimental procedure.
Enrici, Philippe. "Sur des méthodes de caractérisation de films diélectriques : Etude et développment d'un banc de mesure." Montpellier 2, 1996. http://www.theses.fr/1996MON20139.
Full textFarcy, Alexis. "Optimisation des performances électriques appliquée aux interconnexions des circuits intégrés en présence de variabilité." Chambéry, 2009. http://www.theses.fr/2009CHAMS040.
Full textThe contribution of interconnects to overal1 integrated circuit performance is increasing as lines and vias dimensions scale down. Designers' work is now impacted by technological constraints such as Cu resistivity increase or process variability, which affect electrical properties of interconnects. The development of innovative processes and materials in a limited time frame to ensure economical viability of each new generation is absolutely mandatory. This study aims at developing a methodology to predict the real impact of technological solutions on interconnect propagation performance in order to identify the most suitable solutions. After a review of the main innovations under development, the methodology proposed to predict the dependence of signal transmission on technological stack properties and process variability is presented. This approach is then applied to the case of the 32 nm technological node. The experimental results obtained based on the analysis of real circuits to define realistic simulation conditions lead to the extraction of analytic models suitable for statistical analysis. An optimisation of interconnect technological stack is then performed taking into account process variability to identify the most promising technological solutions to reach the required electrical specifications