Browse > Article

Application of Modeling of Electromagnetic Wave Propagation for Thickness Determination Using Finite Difference-Time Domain  

임홍철 (연세대학교 건축공학과)
남국광 (연세대학교 건축공학과 대학원)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.15, no.2, 2002 , pp. 341-349 More about this Journal
Abstract
The radar method is becoming one of the major nondestructive testing(NDT) techniques lot concrete structures. Numerical modeling of electromagnetic wane is needed to analyze radar measurement results. Finite difference-time domain(FD-TD) method can be used to simulate electromagnetic wave propagation through concrete specimens. Five concrete specimens with different thickness are modeled in 3-dimension. Radar modeling results compare measurement results to find backface of the concrete specimens and measure thickness of the concrete specimens.
Keywords
Radar; Modeling; Finite difference-time domain method; Nondestructive Testing; Concrete;
Citations & Related Records
연도 인용수 순위
  • Reference
1 박석균, 임홍철, '전자파를 이용한 콘크리트 구조물의 비파괴검사', 콘크리트학회지, 제10권, 제2호, 1998, pp.27-39
2 Buyukozturk, O., Rhim, H. C., 'Modeling of Electromagnetic Wave Scattering by Concrete Specimens', Cement and Concrete Research, Vol. 25, No. 5, 1995, pp.1011-1022   DOI   ScienceOn
3 K. S. Yee, 'Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media', IEEE Trans. Antennas Propagat, Vol. AP-14, No. 3, 1996, pp.302-307
4 Chong, K. P., Scalzi, J. B., and Dillon, O. W., 'Overview of Nondestructive Evaluation Projects and Initiative at NSF' Journal of Intelligent Materials, System and Structures, Vol. 1, 1990, pp.422-431   DOI
5 임홍철, 이지훈, 손병오, '레이더를 이용한 콘크리트의 두께 측정과 유효 측정 범위 설정에 관한 연구', 한국비파괴검사학회지, Vol. 20, No. 4, 2000, pp.305-313
6 A. Taflove, Computational Electrodynamics: The Finite Difference Time Domain Method, Artech House, Boston․London, 1995, pp.599
7 임홍철, 조윤범, '유한차분 시간영역법을 이용한 콘크리트의 두께측정과 철근위치 탐사를 위한 전자기파 전파 모델링', 한국전산구조공학회 논문집, 제12권, 제4호, 1999년, 12월, pp.639-6482
8 Johnson. R. C., Antenna Engineering Handbook, McGrawHill, New York, 1477, 1993, pp.125