Determining the optimal parameters in a distant radar NDE technique for debonding detection of GFRP-concrete systems

Tzu-Yang Yu

doi:10.1117/12.815895

9 April 2009 Determining the optimal parameters in a distant radar NDE technique for debonding detection of GFRP-concrete systems

Tzu-Yang Yu

Author Affiliations +

Proceedings Volume 7294, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009; 72940S (2009) https://doi.org/10.1117/12.815895
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

In the distant detection of debonding in glass fiber reinforced polymer (GFRP)-retrofitted concrete systems using radar NDE techniques, revealing the presence of debonding in reconstructed images is essential to the success of the techniques. An optimization scheme based on mathematical morphology is proposed for determining the optimal measurement and processing parameters in a distant radar NDE technique for debonding detection. Inverse synthetic aperture radar (ISAR) and backprojection algorithms are applied in the technique. Measurement (incident frequency and angle) and processing (frequency bandwidth and angular range) parameters are defined in this work. Performance of the optimization scheme is validated by laboratory ISAR measurements on GFRP-retrofitted concrete cylinders using radar signals in 8-18 GHz. From the results it is shown that better detection can be achieved by optimized measurements and processing.

Citation Download Citation

Tzu-Yang Yu "Determining the optimal parameters in a distant radar NDE technique for debonding detection of GFRP-concrete systems", Proc. SPIE 7294, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009, 72940S (9 April 2009); https://doi.org/10.1117/12.815895

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