Thermographie infrarouge appliquée au contrôle non destructif du renforcement des structures par collage de composites : De la recherche en laboratoire à l'application terrain
| Autor: | Dumoulin, Jean, Taillade, Fredéric, Benzarti, Karim, Quiertant, Marc, Aubagnac, Christophe |
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| Přispěvatelé: | Département Mesure, Auscultation et Calcul Scientifique (LCPC/MACS), Laboratoire Central des Ponts et Chaussées (LCPC)-PRES Université Nantes Angers Le Mans (UNAM), Laboratoire Central des Ponts et Chaussées (LCPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Département Matériaux (LCPC/MAT), Département Structures et Ouvrages d'Art (LCPC/SOA), Centre d'études techniques de l'équipement de Lyon (CETE de Lyon), Avant création Cerema, Cadic, Ifsttar |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | The French Technology of Concrete, AFGC-3rd FIB Congress The French Technology of Concrete, AFGC-3rd FIB Congress, May 2010, France. pp 371-380 |
| Popis: | We present a method for detection and characterization of defects (delaminations or adhesive disbonds) that can take place at the interface between the concrete substrate and the bonded FRP. This method consists in a preliminary heating of the surface to be inspected, and in the use of infrared thermography. Detection of disbonds between different layers is also possible. Theoretical and experimental analyses of adhesive disbonds are presented in this paper. The performance of the method is firstly demonstrated using laboratory specimens with calibrated defects. In the inspected samples ; debonded areas were simulated by locally replacing the epoxy resin by non-adherent polytetrafluoroethylene (PTFE) discs at the concrete-to-FRP interface or between different layers of FRP. Comparison of theoretical and experimental results have confirmed the feasibility of this technique for in situ inspection. The transfer of this innovative method into the field application was accomplished during the control of the CFRP strengthening of the Toutry viaduct. Inspection methods are described and results of IR imaging showing air voids between multiple plies or between the FRP system and concrete are presented. This results clearly demonstrate the efficiency of the innovative method. |
| Databáze: | OpenAIRE |
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