Fundamental Study on NDT of Building Wall Structure by Radar

Motoyuki Sato 1 Hai Liu 1 Christian Koyama 1 Kazunori Takahashi 1
1 Tohoku University [Sendai]
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.
Mots-clés : Electromagnetic sensors Electromagnetic Signal processing
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Motoyuki Sato, Hai Liu, Christian Koyama, Kazunori Takahashi. Fundamental Study on NDT of Building Wall Structure by Radar. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01022031〉

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