16 April 2013 Wideband subsurface radar for bridge structural health monitoring and nondestructive evaluation
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The nondestructive evaluation (NDE) inspection for building and bridge structures has attracted a lot of attentions for the fundamental research and the sensor system development. In this paper, development of a distant subsurface imaging radar is reported. Theoretical background of subsurface radar imaging is first provided. Experimental laboratory measurements using radar signals in the frequency range of 1-18 GHz were conducted. From the theoretical analysis and the initial experimental results on a laboratory reinforced concrete specimens, it is proved that the proposed subsurface imaging radar system can detect the location of steel reinforcement inside a concrete cylinder and identify the material property of panel specimens. Range-dependent attenuation of radar signals is experimentally studied using different materials. Findings are reported in the summary.
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Tzuyang Yu, Tzuyang Yu, Che-Fu Su, Che-Fu Su, Chieh-Ping Lai, Chieh-Ping Lai, H. Felix Wu, H. Felix Wu, } "Wideband subsurface radar for bridge structural health monitoring and nondestructive evaluation", Proc. SPIE 8694, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2013, 86940I (16 April 2013); doi: 10.1117/12.2010120; https://doi.org/10.1117/12.2010120

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