No abstract

No abstract

Steel corrosion is caused by the presence of water. Therefore, it is important to identify the areas where water is supplied, which will lead to efficient corrosion prevention and repair. Previous studies have proposed methods for detecting water on steel, but these studies used attach-type or contact-type measurement devices, making it impossible to detect water in inaccessible locations. The objective of this study is to detect a thin water film on corroded steel using a hyperspectral camera that can acquire visible and near-infrared spectra in a non-contact manner. First, the spectral characteristics of the thin water film detected by the HSC is confirmed by measuring the spectra of water in a petri dish at varying depths. Subsequently, the spectra of corroded steel specimens in dry and wet conditions were measured. As the results, it is indicated that water on steel could be detected by examining the spectra at wavelengths of 435 and 960 nm.

No abstract

No abstract