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/lp/sage/de-bonding-detection-on-a-cfrp-laminated-concrete-beam-using-self-tkqUkDXG8s
- Publisher
- SAGE
- Copyright
- © 2012 SAGE Publications
- ISSN
- 1369-4332
- eISSN
- 2048-4011
- DOI
- 10.1260/1369-4332.15.6.919
- Publisher site
- See Article on Publisher Site
Abstract
This paper reports a novel structural health monitoring (SHM) technique for detecting de-bonding defects between a concrete beam structure and a CFRP (Carbon Fiber Reinforced Polymer) sheet attached to the concrete surface. To achieve this purpose, a multi-scale actuated sensing system with a self-sensing circuit using piezoelectric active sensors was applied to a CFRP laminated concrete beam structure. In the self-sensing based multi-scale actuated sensing system, a wide frequency-band structural response from the self-sensed impedance measurements and a specific frequency-induced structural wavelet response from the self-sensed guided wave measurement were utilized to localize the de-bonding defects. Furthermore, in order to quantify the de-bonding levels, the supervised learning-based statistical pattern recognition was implemented by composing a two-dimensional (2D) plane using the damage indices extracted from the impedance and guided wave features. The different levels of de-bonding defects inflicted artificially on the CFRP laminated concrete beam structure were investigated to confirm the effectiveness of the proposed SHM approach.
Journal
Advances in Structural Engineering – SAGE
Published: Jun 1, 2012