Chen Jiguo, Zhang Ruiqi, Li Qianwu, Wang Hongke, Ma Qiangqiang, Fan Qi, Fan Liang, Lin Zequan
Suzhou Nuclear Power Research Institute, Suzhou 215004, China.
Key Laboratory of Advanced Marine Materials, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
Sensors (Basel). 2025 May 19;25(10):3194. doi: 10.3390/s25103194.
Steel pipes, while essential for modern infrastructure due to their high strength and load-bearing capacity, are prone to corrosion in the marine environment, leading to material degradation, compromised structural integrity, and elevated safety risks and economic losses. In this study, distributed fiber-optic sensors were deployed on steel pipe surfaces to monitor corrosion in the splash zone (a region particularly vulnerable to cyclic wet-dry conditions). The sensors were engineered to withstand aggressive marine exposure. Strain variations induced by expansive corrosion products were detected via the fiber-optic array and used to calculate localized mass loss. Color-coded corrosion severity maps were generated to visualize the non-uniform corrosion distribution. Experimental results demonstrate that sensor-derived mass loss values align with 3D laser scanning measurements, validating the operational efficacy of distributed fiber-optic sensing for marine corrosion monitoring. This approach provides quantitative insights into the field applicability of optical sensing in structural health monitoring.
钢管因其高强度和承载能力而对现代基础设施至关重要，但在海洋环境中容易受到腐蚀，导致材料降解、结构完整性受损以及安全风险和经济损失增加。在本研究中，分布式光纤传感器被部署在钢管表面，以监测飞溅区（一个特别容易受到周期性干湿条件影响的区域）的腐蚀情况。这些传感器经过设计，能够承受恶劣的海洋环境。通过光纤阵列检测由膨胀性腐蚀产物引起的应变变化，并用于计算局部质量损失。生成了颜色编码的腐蚀严重程度图，以可视化不均匀的腐蚀分布。实验结果表明，传感器得出的质量损失值与三维激光扫描测量结果一致，验证了分布式光纤传感用于海洋腐蚀监测的操作有效性。这种方法为光学传感在结构健康监测中的现场适用性提供了定量见解。
