A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Acoustic emission monitoring of debonding of external reinforcing patches from concrete
The present study concerns the characterization of the fracture process in concrete beams which are externally reinforced by means of composite materials. The reinforcement comes in the form of CFRP (Carbon Fiber Reinforced Polymer) strip and TRC (Textile Reinforced Cement) layer. In order to monitor the accumulation of fracture beneath the non-transparent layer, AE (Acoustic Emission) sensors are used. The results show that the different mechanisms starting from concrete cracking due to tensile stresses at the bottom up to the shear debonding of the patches exhibit quite distinct acoustic signatures and can be identified. Waveform parameters such as duration and frequency content provide strong characterization capacity concerning the different processes. Valuable feedback is supplied by DIC (Digital Image Correlation) which verifies the moments of debonding by the significant strain release on the surface of the patch. Discussion is done on the in-situ application of this methodology and the limitations that may apply due to scattering and damping on the propagating waves.
Acoustic emission monitoring of debonding of external reinforcing patches from concrete
The present study concerns the characterization of the fracture process in concrete beams which are externally reinforced by means of composite materials. The reinforcement comes in the form of CFRP (Carbon Fiber Reinforced Polymer) strip and TRC (Textile Reinforced Cement) layer. In order to monitor the accumulation of fracture beneath the non-transparent layer, AE (Acoustic Emission) sensors are used. The results show that the different mechanisms starting from concrete cracking due to tensile stresses at the bottom up to the shear debonding of the patches exhibit quite distinct acoustic signatures and can be identified. Waveform parameters such as duration and frequency content provide strong characterization capacity concerning the different processes. Valuable feedback is supplied by DIC (Digital Image Correlation) which verifies the moments of debonding by the significant strain release on the surface of the patch. Discussion is done on the in-situ application of this methodology and the limitations that may apply due to scattering and damping on the propagating waves.
Acoustic emission monitoring of debonding of external reinforcing patches from concrete
Aggelis, Dimitrios (author) / Tsangouri, Eleni (author) / Verbruggen, Svetlana (author) / Tysmans, Tine (author) / Hemelrijck, Danny van (author)
2014
7 Seiten, Bilder, 17 Quellen
Conference paper
Storage medium
English
Debonding monitoring of composite repair patches using embedded small-diameter FBG sensors
| British Library Online Contents | 2007
| British Library Online Contents | 1997
| British Library Online Contents | 1997
Debonding Failure of Reinforced Concrete Beams Strengthened with External CFRP Fabric
| British Library Conference Proceedings | 2001