Experimental and numerical studies on interface debonding visualization for a rectangular CFST column with surface stress wave measurement and a threshold-based probability imaging algorithm

Key Points

• Interface debonding was effectively visualized using a newly developed imaging algorithm—demonstrating promising results.
• The key metric indicated a threshold-based probability in imaging that accurately captures debonding in structures.
• Numerical studies and experimental trials were employed to assess the performance of stress wave measurement techniques.
• Findings support innovative approaches to structural health monitoring, highlighting the need for further validation in real-world conditions.