Microwave Non-Destructive Testing Technique for Material Characterization of Concrete Structures via Electromagnetic Waves with FDTD

Authors

  • Ummu Sahin Sener Department of Mathematical Engineering Yıldız Technical University Istanbul, Turkey
  • Sebahattin Eker Informatics Institute Istanbul Technical University Istanbul, Turkey

Keywords:

cement-based samples, finite-difference timedomain simulation, layered media, perfectly matched layer, rebar

Abstract

Concrete is a nonhomogeneous medium that contains coarse aggregate, sand (fine aggregate), cement powder, water and porosity. Microwave non-destructive testing (NDT) technique is used to simulate three layered media that contains air gap, coarse aggregate and a two layered media that contain rebar and void is modeled as closest to the reality. Interaction of electromagnetic wave and the concrete pile is utilized for numerical simulation. A Finite-Difference Time-Domain (FDTD) method with Perfectly Matched Layer (PML) Absorbing Boundary Condition (ABC) is proposed to simulate electromagnetic wave propagation in FRP tube and composite pile. 2D simulation of a wave generated from a point source at microwave frequencies is obtained by using MATLAB®.

References

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W. Wei, Z. Shao, Y. Zhang, R. Qiao, and J. Gao, “Fundamentals and applications of microwave energy in rock and concrete processing-A review,” Applied Thermal Engineering, 113751, 2019.

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A. Taflove and S. C. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain Method. Artech House, 2005.

J. P. Berenger, “A perfectly matched layer for the absorption of electromagnetic waves,” Journal of Computational Physics, vol. 114, no. 2, pp. 185-20,1994.

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Published

2020-11-07

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Articles