8 research outputs found
Caractérisation de dépôts adhérents de polypyrrole sur substrats de verre
L'emploi d'agents de couplage spécifiques, destinés à favoriser l'adhésion de la couche de polypyrrole à la surface de fibres de verre, conduit en outre à une forte augmentation de sa conductivité. La spectroscopie Raman ne montre pas de différence de structure induite par le silane. Il agirait sur l'homogénéité et la régularité du dépôt comme le montrent l'examen microscopique et l'analyse XPS
3D Numerical Modelling of Claw-pole Alternators with its Electrical Environment
International audienceThis paper describes a methodology for modelling a six-phase claw-pole alternator with its electrical environment. Magnetic nonlinearities, eddy currents and rectifiers are taken into account. To solve magnetodynamic problems, we use the modified magnetic vector potential formulation. The complex structure of the machine requires a 3D finite element analysis. To limit the mesh size, we introduced a refinement strategy based on the calculation of the time derivative of magnetic vector potential, solution of the magnetostatic case. In addition, we propose to reduce the transient state by improving the initial solution from the solution of a magnetostatic problem. These different numerical techniques reduce drastically the computational time and memory resources. To validate the proposed approach, some results are compared with experimental ones
Highly Conducting and Strongly Adhering Polypyrrole Coating Layers Deposited on Glass Substrates by a Chemical Process
Depot de polypyrrole sur fibres de verre servant de renfort pour composites conducteurs de l'electricite
Tire de : Comptes rendus des 8e Journees Nationales sur les Composites, Palaiseau (France), 16-18 novembre 1992Available at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1992 n.218 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc
Elaboration and characterization of adhering polypyrrole coatings on glass fibers
Available at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1995 n.62 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc