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Fundamental Study on NDT of Building Wall Structure by Radar

Abstract : GB-SAR (Ground Based Synthetic Aperture Radar) for inspection of wooden and concrete walls and structures has been developed and the system was evaluated by test measurements. The GB-SAR system uses frequency bandwidth 1-10GHz, and it can acquire full polarimetric radar signal. Then Synthetic Aperture (SAR) Radar signal processing is used to reconstruct 3-dimenatioal images of inner structure of the targets. We found that the radar polarimetry gives us very precise information of the damaged structures, and demonstrated that radar polarimetry is a useful tool for detecting fractures inside a concrete structures, and detection of small deformation of wooden structures.
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https://hal.inria.fr/hal-01022031
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Submitted on : Thursday, July 10, 2014 - 9:58:00 AM
Last modification on : Thursday, July 10, 2014 - 10:36:45 AM
Long-term archiving on: : Friday, October 10, 2014 - 10:56:11 AM

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Motoyuki Sato, Hai Liu, Christian Koyama, Kazunori Takahashi. Fundamental Study on NDT of Building Wall Structure by Radar. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01022031⟩

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