TY - JOUR AU - Pintér, Bálint AU - Bingler, Arnold AU - Bilicz, Sándor AU - Pávó, József TI - Sensitivity analysis for the eddy current testing of carbon fiber reinforced plastic materials JF - INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS J2 - INT J APPL ELECTROM VL - 74 PY - 2024 IS - 4 SP - 397 EP - 403 PG - 7 SN - 1383-5416 DO - 10.3233/JAE-230142 UR - https://m2.mtmt.hu/api/publication/34832875 ID - 34832875 N1 - Export Date: 3 May 2024 Correspondence Address: Bingler, A.; Department of Broadband Infocommunications and Electromagnetic Theory, Hungary; email: bingler.arnold@vik.bme.hu AB - 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. © 2024-IOS Press. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Coskun, Aysu AU - Bilicz, Sándor TI - Analysis of Data-Driven Approaches for Radar Target Classification JF - COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING J2 - COMPEL PY - 2024 SN - 0332-1649 DO - 10.1108/COMPEL-11-2023-0576 UR - https://m2.mtmt.hu/api/publication/34543149 ID - 34543149 N1 - Funding Agency and Grant Number: Hungarian Scientific Research Fund [K-135307] Funding text: This research is supported by the Hungarian Scientific Research Fund under Grant K-135307. LA - English DB - MTMT ER - TY - JOUR AU - Bingler, Arnold AU - Pinter, B. AU - Marak, K. AU - Bilicz, Sándor AU - Csornyei, M. TI - Surrogate Model-Based Parameter Identification for 3-D Modeling of Common Mode Chokes JF - IEEE TRANSACTIONS ON MAGNETICS J2 - IEEE T MAGN VL - 60 PY - 2024 IS - 3 PG - 4 SN - 0018-9464 DO - 10.1109/TMAG.2023.3322036 UR - https://m2.mtmt.hu/api/publication/34231286 ID - 34231286 N1 - Budapest University of Technology and Economics, Faculty of Electrical Engineering and Informatics Department of Broadband Infocommunications and Electromagnetic Theory, Budapest, Hungary Department of Electromagnetic Field, Czech Technical University in Prague, Czechia Robert Bosch Kft, Budapest, Hungary Export Date: 2 November 2023 CODEN: IEMGA Funding Agency and Grant Number: Ministry of Culture and Innovation of Hungary from the National Research, Development and Innovation Fund, financed under the KDP-2020 Funding Scheme Funding text: No Statement Available AB - In this article, we propose a method to provide a wideband 3-D model of a toroidal-shaped common mode choke (CMC) and extract the complex permeability curves of the toroid core. The overlapping turns of the CMC's coils are treated by equidistant turns and external capacitors, while the complex, frequency-dependent permeability is modeled by a second-order general dispersion model. Obtaining the optimal capacitance values and dispersion model parameters is addressed as an inverse problem that leads to a minimization of the misfit between the simulated-with 3-D finite element (FE) method-and measured transfer scattering parameter curves of the CMC. The computational cost is reduced by a polynomial chaos kriging (PCK) surrogate model (SM) that is built using a small sampling design and is subsequently used as a low-cost substitute for the FE model to support the great number of model evaluations that the inverse problem implies. LA - English DB - MTMT ER - TY - JOUR AU - Coskun, Aysu AU - Bilicz, Sándor TI - Target classification using radar cross-section statistics of millimeter-wave scattering JF - COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING J2 - COMPEL VL - 42 PY - 2023 IS - 5 SP - 1197 EP - 1209 PG - 13 SN - 0332-1649 DO - 10.1108/COMPEL-12-2022-0446 UR - https://m2.mtmt.hu/api/publication/34048336 ID - 34048336 N1 - Export Date: 6 July 2023 CODEN: CODUD Correspondence Address: Bilicz, S.; Department of Broadband Infocommunications and Electromagnetic Theory, Hungary; email: bilicz.sandor@vik.bme.hu LA - English DB - MTMT ER - TY - GEN ED - Bilicz, Sándor ED - Gyimóthy, Szabolcs ED - Vértesy, Gábor TI - Electromagnetic Non-Destructive Evaluation (XXIV) CY - ( STUDIES IN APPLIED ELECTROMAGNETICS AND MECHANICS; 1383-7281 46 ) PY - 2023 PG - 90 SN - 9781643683812 DO - 10.3233/SAEM46 UR - https://m2.mtmt.hu/api/publication/33770660 ID - 33770660 LA - English DB - MTMT ER - TY - JOUR AU - Badics, Zsolt AU - Pávó, József AU - Bilicz, Sándor AU - Gyimóthy, Szabolcs TI - Finite-Element A-V Formulation for EMQS Problems via Two-Domain Continuity Gauging JF - IEEE TRANSACTIONS ON MAGNETICS J2 - IEEE T MAGN VL - 59 PY - 2023 IS - 5 SN - 0018-9464 DO - 10.1109/TMAG.2023.3244722 UR - https://m2.mtmt.hu/api/publication/33733398 ID - 33733398 N1 - Tensor Research, LLC, Andover, MA, U.S.A Department of Broadband Infocommunications and Electromagnetic Theory, Budapest University of Technology and Economics, Budapest, Hungary CODEN: IEMGA Funding Agency and Grant Number: Hungarian Scientific Research Fund [K-135307] Funding text: This work was supported by the Hungarian Scientific Research Fund under Grant K-135307. AB - A finite-element (FE) A-V formulation is developed to solve electromagnetic quasistatic (EMQS), aka Darwin, problems in the time and frequency domains by making use of a two-domain continuity gauging strategy. The formulation utilizes the magnetic vector and the electric scalar potentials, and an additional scalar in the conducting regions to make the discretized Galerkin system symmetric. The resulting FE matrix is low-frequency (LF) stable in the frequency domain. As a result, the time-step size is not limited by the characteristics of the system matrix in the backward Euler time-stepping scheme. The system matrixes are also regular, which allows choosing a direct solver to speed up the temporal solution significantly. The formulation is verified in both the frequency and the time domains by solving benchmark problems, and the results are compared to full-wave and eddy-current solutions. LA - English DB - MTMT ER - TY - CHAP AU - Coskun, Aysu AU - Bilicz, Sándor ED - Imre, Sándor ED - Gyimóthy, Szabolcs ED - Varga, Pál TI - A Data Driven Approach for Target Classification Based on Histogram Representation of Radar Cross Section T2 - Proceedings of the 1st Workshop on Intelligent Infocommunication Networks, Systems and Services (WI2NS2) PB - BME Villamosmérnöki és Informatikai Kar CY - Budapest SN - 9789634219026 PY - 2023 SP - 19 EP - 24 PG - 6 DO - 10.3311/WINS2023-004 UR - https://m2.mtmt.hu/api/publication/33715056 ID - 33715056 AB - A new approach for classifying targets based on their radar cross section (RCS) is discussed. The RCS presents unique statistical features depending on the target’s shape, while an incident angle with small random fluctuation is considered. Data sets are generated utilizing Physical Optics simulation of the RCS, and the classification of targets with different shapes is performed by Artificial Neural Network (ANN). The algorithm’s performance is evaluated, especially regarding the robustness against noise on the RCS data. Numerical examples motivated by mm-wave radar applications in driving assistance systems are presented. The results show that the classification algorithm performs promising results and ensures the robustness of the features extracted from histogram definitions of RCS. LA - English DB - MTMT ER - TY - CHAP AU - Badics, Zsolt AU - Pávó, József AU - Bilicz, Sándor AU - Gyimóthy, Szabolcs TI - Finite-Element A-V Formulation for EMQS Problems via Two-Domain Continuity Gauging T2 - CEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings PB - Institute of Electrical and Electronics Engineers (IEEE) SN - 9781665468336 T3 - CEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings PY - 2022 SP - 1 EP - 2 PG - 2 DO - 10.1109/CEFC55061.2022.9940679 UR - https://m2.mtmt.hu/api/publication/33733415 ID - 33733415 N1 - Funding Agency and Grant Number: Hungarian Scientific Research Fund [K-135307] Funding text: This work was supported by the Hungarian Scientific Research Fund under grant K-135307. AB - A finite-element A-V formulation is developed to solve EMQS (electromagnetic quasistatic), aka Darwin, problems in the time and frequency domains by making use of a two-domain continuity gauging strategy. The formulation utilizes the magnetic vector and electric scalar potentials, and an additional scalar in the conducting regions. The resulting FE system matrixes are symmetric and stable even in the static limit. LA - English DB - MTMT ER - TY - CONF AU - Coskun, Aysu AU - Bilicz, Sándor TI - Target Classification Using Radar Cross Section Statistics of Millimetre-Wave Scattering T2 - 20th International IGTE Symposium on Computational Methods in Electrical Engineering and Multiphysics PB - Graz University of Technology C1 - Graz PY - 2022 UR - https://m2.mtmt.hu/api/publication/33719471 ID - 33719471 LA - English DB - MTMT ER - TY - JOUR AU - Vértesy, Gábor AU - Gasparics, Antal AU - Szenthe, Ildikó AU - Bilicz, Sándor TI - Magnetic Investigation of Cladded Nuclear Reactor Blocks JF - MATERIALS J2 - MATERIALS VL - 15 PY - 2022 IS - 4 PG - 12 SN - 1996-1944 DO - 10.3390/ma15041425 UR - https://m2.mtmt.hu/api/publication/33628419 ID - 33628419 LA - English DB - MTMT ER -