Time-Domain Modeling of Radar Assessment of Concrete: a Parametric Study
نویسندگان
چکیده
We are investigating the radar as a non-destructive technique to detect early-stage flaws and reinforcement in concrete structures. In this paper, we simulate the groundpenetrating radar (GPR) assessment of concrete structures using three-dimensional (3D) finite-difference time-domain (FDTD). The discussion focuses on the evaluation of the performance of GPR in assessing dispersive and heterogeneous models of concrete structures. The ability to detect flaws and reinforcement using bow-tie antennas for transmitting and receiving is investigated. Simulations are carried out to examine the influence of dispersion and heterogeneity on GPR measurements and its influence on spatial dispersion using various types of concrete characterized by low/high-performance, and ramdonly created heterogeneity.
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