NDE of fiber-reinforced polymer composites bonded to concrete using IR thermography

Jeff R. Brown; H. R. Hamilton III

doi:10.1117/12.546866

12 April 2004 NDE of fiber-reinforced polymer composites bonded to concrete using IR thermography

Jeff R. Brown, H. R. Hamilton III

Proceedings Volume 5405, Thermosense XXVI; (2004) https://doi.org/10.1117/12.546866
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

Infrared thermography is a non-destructive evaluation technique that can be used to identify debonded areas in FRP strengthening systems applied to concrete. This research provides a summary of IR thermography experiments that were conducted on full-scale AASHTO girders strengthened with four different FRP composite systems. Significant findings were that the thickness of the FRP system as well as the material composition strongly influences the ability to detect defects at the FRP/concrete interface. Additional experiments were conducted on small-scale specimens with implanted defects. Results from these experiments indicate that IR thermography is capable of detecting defects under multi-layer FRP composite systems; however the defect signal strength and time to maximum signal vary significantly from single-layer systems.

Citation Download Citation

Jeff R. Brown and H. R. Hamilton III "NDE of fiber-reinforced polymer composites bonded to concrete using IR thermography", Proc. SPIE 5405, Thermosense XXVI, (12 April 2004); https://doi.org/10.1117/12.546866

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