Hou Liang, Akutagawa Shinichi, Tomoshige Yuki, Kimura Takashi
Department of Civil Engineering, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.
Engineering Department, JFE Shoji Terre One Corporation, 2-1, Otemachi 2-Chome, Chiyoda-ku, Tokyo 100-0004, Japan.
Sensors (Basel). 2024 Jan 29;24(3):885. doi: 10.3390/s24030885.
The timely and cost-effective identification of the onset of corrosion and its progress would be critical for effectively maintaining structural integrity. Consequently, a series of fundamental experiments were conducted to capture the corrosion process on a steel plate using a new type of plastic optical fiber (POF) sensor. Electrolytic corrosion experiments were performed on a 5 mm thick steel plate immersed in an aqueous solution. The POF sensor installed on the upper side of the plate and directed downward detected the upward progression of the corrosion zone that formed on the underside of the plate. The results showed that the POF sensors could detect the onset of the upward-progressing corrosion front as it passed the 1 and 2 mm marks related to the thickness of the corroded zone. The POF sensors were designed to optically identify corrosion; therefore, the data obtained by these sensors could be processed using a newly developed graphic application software for smartphones and also identified by the naked eye. This method offered an easy and cost-effective solution for verifying the corrosion state of structural components.
及时且经济高效地识别腐蚀的起始及其进展情况对于有效维持结构完整性至关重要。因此，进行了一系列基础实验，以使用新型塑料光纤（POF）传感器捕捉钢板上的腐蚀过程。在一块浸入水溶液中的5毫米厚钢板上进行了电解腐蚀实验。安装在钢板上侧并向下指向的POF传感器检测到在钢板下侧形成的腐蚀区域向上的进展情况。结果表明，当向上推进的腐蚀前沿经过与腐蚀区域厚度相关的1毫米和2毫米标记时，POF传感器能够检测到其起始。POF传感器旨在通过光学方式识别腐蚀；因此，这些传感器获得的数据可以使用新开发的智能手机图形应用程序软件进行处理，也可以通过肉眼识别。该方法为验证结构部件的腐蚀状态提供了一种简便且经济高效的解决方案。
