Titre :	Contribution to the modeling of Eddy-Current nondestructive testing systems : application to the characterization of carbon fibers composite materials
Type de document :	texte manuscrit
Auteurs :	Mohamed Naidjate, Auteur ; Ibn Khaldoun Lefkaier, Directeur de thèse
Editeur :	Laghouat : Université Amar Telidji - Département de génie électrique
Année de publication :	2021
Importance :	131 p
Format :	27 cm.
Accompagnement :	1 disque optique numérique (CD-ROM)
Note générale :	Option : Electrical engineering
Langues :	Anglais
Résumé :	Our work is a contribution to the non-destructive testing of carbon fiber composites (CFCM) by eddy current technique. On the theoretical side, we propose a formulation able to emulate the electromagnetic behavior of MCFC while allowing a gain in the computational costs, since we mesh only the conductive parts, in this case, the fibers. To build automatically the fibers geometry, we proposed a technique based on microscopic images and the "Bubble-mesh" algorithm. Thus, a simulation at the fiber scale is possible. On the practical side, we propose a new multi-element sensor based on triangular coils capable of shaping the EM field to configurations similar to a rotating rectangular coil. These different configurations of the EM field are electronically controlled which avoids mechanical rotation and induced vibrations. As a result, the sensor is robust, fast and accurate. The last part of the work was dedicated to eddy current imaging using the theoretical and practical tools we have developed.
note de thèses :	Thèse de doctorat en génie électrique

Contribution to the modeling of Eddy-Current nondestructive testing systems : application to the characterization of carbon fibers composite materials [texte manuscrit] / Mohamed Naidjate, Auteur ; Ibn Khaldoun Lefkaier, Directeur de thèse . - Laghouat : Université Amar Telidji - Département de génie électrique, 2021 . - 131 p ; 27 cm. + 1 disque optique numérique (CD-ROM).
Option : Electrical engineering
Langues : Anglais

Résumé :

Our work is a contribution to the non-destructive testing of carbon fiber composites (CFCM) by eddy current technique. On the theoretical side, we propose a formulation able to emulate the electromagnetic behavior of MCFC while allowing a gain in the computational costs, since we mesh only the conductive parts, in this case, the fibers. To build automatically the fibers geometry, we proposed a technique based on microscopic images and the "Bubble-mesh" algorithm. Thus, a simulation at the fiber scale is possible. On the practical side, we propose a new multi-element sensor based on triangular coils capable of shaping the EM field to configurations similar to a rotating rectangular coil. These different configurations of the EM field are electronically controlled which avoids mechanical rotation and induced vibrations. As a result, the sensor is robust, fast and accurate. The last part of the work was dedicated to eddy current imaging using the theoretical and practical tools we have developed.

note de thèses :

Thèse de doctorat en génie électrique