Application of infrared camera for steel bridge maintenance
Abstract
Heavy-duty anticorrosion coating with multiple-layered paints is applied to long-span steel bridge members on the sea. By aging deterioration, the coating is worn from surface year by year. Appropriate repainting programs should be adopted for the maintenance of the bridges according to the evaluation of wear extent. In this study a new nondestructive evaluation technique using short wavelength infrared (SWIR) camera, that enables us to easily detect the wear loss of surface fluororesin coating layer, is developed based on the difference in spectral absorptance between surface fluororesin coating and inner-layer epoxy resin coating.
- Publication:
-
Thermosense: Thermal Infrared Applications XL
- Pub Date:
- May 2018
- DOI:
- 10.1117/12.2307654
- Bibcode:
- 2018SPIE10661E..0TS