Sensitivity analysis for the eddy current testing of carbon fiber reinforced plastic materials

Issue title: 26th International Workshop on Electromagnetic Nondestructive Evaluation

Guest editors: Theodoros Theodoulidis, Christophe Reboud and Christos Antonopoulos

Article type: Research Article

Authors: Pintér, Bálint^a | Bingler, Arnold^a; | Bilicz, Sándor^a | Pávó, József^a

Affiliations: [a] Department of Broadband Infocommunications and Electromagnetic Theory, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Budapest, Hungary

Correspondence: [*] Corresponding author: Arnold Bingler, Department of Broadband Infocommunications and Electromagnetic Theory, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Budapest, Hungary. E-mail: [email protected]

Abstract: In this work, a parametric study is carried out on carbon fiber-reinforced plastic (CFRP) materials to investigate how the spatially varying fiber distribution influences the measured signal in an eddy current testing (ECT) configuration. The measurement setup was modeled using finite element method, while the fiber distribution is taken into account by an inhomogeneous anisotropic conductivity tensor. The study revealed a trade-off relation between the size of the ECT coil and the maximal dynamic range of the ECT signal, which contributes to the understanding of the connection between the fiber arrangement and the ECT signal and provides an opportunity for optimal ECT coil design.

Keywords: Carbon fiber reinforced plastic, conductivity tensor, eddy current testing, finite element method

DOI: 10.3233/JAE-230142

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 74, no. 4, pp. 397-403, 2024