Modeling and simulation of defects detection in conductive multi-layered pieces by the eddy current technique

3rd International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Bennoud, S.^1 ; Zergoug, M.^2

Laboratory of Aircrafts, University of Blida 1, Blida, Algeria^1

Center of Welding and Control CSC, Cheraga, Algeria^2

关键词: Aluminum parts;    Eddy current techniques;    Electromagnetic problems;    inversing problem;    Model and simulation;    Multi-layered structure;    Non destructive testing;    Potential formulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/574/1/012095/pdf
DOI  :  10.1088/1742-6596/574/1/012095

来源: IOP

【 摘 要 】

It has been shown that the eddy current method is one of the most effective techniques for the detection and characterization of surface and near-surface defects in conductive mediums especially in aluminum alloy. It is one of the most applied methods in industries which require a maximum of reliability and security (aerospace, aeronautics, nuclear, Etc). In this study, a code to solve electromagnetic problems by employing the finite element method is developed. The suggested model can simulate the probe response to the presence of a defect hidden in a multi-layered structure or a riveted structure on aluminum alloy. The developed code is based on the discretization in three dimensions of the Maxwell's equations in harmonic mode by the finite element method based on the combined potential formulations. That will enable us to interpret the results, to present them in graphical form and to carry out simulations for various applications