@article {4723,
	title = {Composite Material Characterization using Eddy Current by 3D FEM Associated with Iterative Technique, ISSN 2119-0275},
	journal = {Advanced Electromagnetics Journal (AEMJ)},
	volume = {volume 8},
	number = {N{\textdegree}1},
	year = {2019},
	abstract = {In this paper, an iterative technique, employing the T formulation associated with the finite element method, based on Maxwell{\textquoteright}s equations and the Biot-savart law, is used for analyzing the density of eddy currents in composite carbon fiber reinforced polymer (CFRP) materials. For this purpose, a code has been developed for solving an electromagnetic 3D non-destructive evaluation problem. This latter permits the characterization of this CFRP and determinate of fibers orientation using the impedance variation which is implanted in polar diagram. Firstly, the obtained results are compared with those of the analytical model. This comparison reveals a high concordance which proves the validity of the proposed method. Secondly, three different applications are shown for illustrating the characterization of unidirectional, bidirectional and multidirectional piece using a rectangular coil plotted in normalized impedance diagram.},
	url = {https://aemjournal.org/index.php/AEM/article/view/953},
	author = {Hachi Dahmane and Benhadda Nabil and Helifa Bachir and Lefkaier Ibn Khaldoun and Abdelhadi, Bachir}
}
@article {4720,
	title = {Development of Multi-Coils Circular Eddy Current Sensor for Characterization of Fibers Orientation and Defect Detection in Multidirectional CFRP Material, ISSN / e-ISSN 0934-9847 / 1432-2110},
	journal = {Research in Nondestructive Evaluation},
	year = {2019},
	abstract = {This article presents a study of a Multi-coils circular eddy current non-destructive testing sensor for determining the fibers orientation as well as the detection of defect in multidirectional carbon fibers reinforced polymer (CFRP). The developed sensor contains 16 rectangular coils connected in series and supplied by a single-phase sinusoidal source. This sensor allows the annulations of the mechanical rotation of the conventional sensors and it permits to reduce the inspection procedure duration. The electromagnetic phenomena are calculated by using 3D finite element method (FEM) based on the electromagnetic AV-A formulation. Finally, the Multi-coils circular sensor responses are analyzed through polar diagrams of the impedance variation, where the defect is taken into consideration. A great concordance between the obtained results and those of literatures has been noticed. The provided results show that the proposed sensor allows an efficient characterization of multidirectional CFRP and detection of defects in different layers.},
	url = {https://www.tandfonline.com/doi/abs/10.1080/09349847.2019.1645254?journalCode=urnd20},
	author = {Benhadda Nabil and Hachi Dahmane and Helifa Bachir and Lefkaier Ibn Khaldoun and Abdelhadi, Bachir}
}
