14 May 2018 Application of infrared camera for steel bridge maintenance
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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.
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Takahide Sakagami, Takahide Sakagami, Yoshiaki Mizokami, Yoshiaki Mizokami, Daiki Shiozawa, Daiki Shiozawa, Masahiro Hayashi, Masahiro Hayashi, Masahiro Takeguchi, Masahiro Takeguchi, "Application of infrared camera for steel bridge maintenance", Proc. SPIE 10661, Thermosense: Thermal Infrared Applications XL, 106610T (14 May 2018); doi: 10.1117/12.2307654; https://doi.org/10.1117/12.2307654

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