Inspection of corroded Concrete/Steel/Concrete pipes using ultrasound methods
Résumé
Non-destructive ultrasound methods are developed to inspect concrete/steel/concrete pipes affected by corrosion and especially to detect and size holes in the steel layer and to assess remaining steel thickness. In this study, we focus on hole detection and sizing on samples in laboratory using bulk waves methods. We performed measurements through concrete using pulse compression methods. A specific signature of holes in the steel layer was successfully identified. The technique allowed us to size the defect by scanning the structure with a certain measurement step and using the RMS value as an indicator.
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