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Detection Subsurface Voids in Concrete Using Simulation Analysis of Radar Responses for frequency Variations  

Park, Seok-Kyun (Department of Civil Engineering, Daejeon University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.23, no.2, 2003 , pp. 125-132 More about this Journal
Abstract
This study introduces a simulation model of radar responses from subsurface voids in concrete for their frequency variations. In this model, resolution and attenuation characteristics due to frequency variations are analyzed at each material interface which has different electromagnetic property. This model aims at the selection of best frequency of radar which can analyze the thickness of voids in concrete from radar responses. It can also be applied to estimate the limitation of propagation depth of radar on subsurface voids in concrete. The computed results show the radar images obtained by using a radar signal processing technique using convolution.
Keywords
simulation analysis; radar response; subsurface void; concrete;
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