基于布拉格光纤光栅的腐蚀监测传感技术研究

岑远遥; 廖光萌; 何建新; 赵方超; 朱玉琴

doi:10.7643/ issn.1672-9242.2025.10.017

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (10) : 143-148. DOI: 10.7643/ issn.1672-9242.2025.10.017

环境试验与观测

基于布拉格光纤光栅的腐蚀监测传感技术研究

岑远遥^{1, 2}, 廖光萌^{1, 2}, 何建新^{1, 2}, 赵方超^{1, 2, *}, 朱玉琴^{1, 2}

作者信息 +

Research on Corrosion Monitoring Sensing Technology Based on Bragg Fiber Grating

CEN Yuanyao^{1, 2}, LIAO Guangmeng^{1, 2}, HE Jianxin^{1, 2}, ZHAO Fangchao^{1, 2, *}, ZHU Yuqin^{1, 2}

Author information +

文章历史 +

摘要

目的针对装备铝合金结构服役过程中腐蚀监测需求,设计铝合金应变片式的光纤光栅腐蚀传感器,用于弹药包装箱/包装桶及狭小空间中金属的腐蚀监测。方法通过搭建盐雾试验环境,得到光纤光栅反射光谱变化特征,在传感器内部设计不受力且只对温度敏感的光纤光栅传感器,解决被测装备的温度与应力交叉敏感问题。结果在实验室开展盐雾250 h试验,FBG波长总变化量为2.463 nm,在腐蚀环境恒定的情况下,腐蚀时间与FBG波长变化量呈线性关系。开展2 000 h海洋大气环境试验,FBG波长总变化量约为2.7 nm,铝合金在腐蚀初期和腐蚀后期,FBG波长基本稳定。结论基于光纤光栅的腐蚀监测结构能够真实地反映金属的腐蚀情况。

Abstract

The work aims to design a fiber optic grating corrosion sensor with aluminum alloy strain gauges to meet the corrosion monitoring requirements during the service of aluminum alloy structures and use it in metal corrosion monitoring in ammunition packaging boxes/barrels and narrow spaces. By setting up a salt spray test environment, the characteristics of fiber grating reflection spectrum changes were obtained. A fiber grating sensor that was not subject to force and only sensitive to temperature was designed inside the sensor, solving the problem of cross sensitivity between temperature and stress of the tested equipment. A 250 hour salt spray test was conducted in the laboratory, and the total wavelength change of FBG was 2.463 nm. Under a constant corrosive environment, the corrosion time was linearly related to the wavelength change of FBG. In a 2 000 hour marine atmospheric environment test, the total wavelength change of FBG was approximately 2.7 nm, and the FBG wavelength of aluminum alloy remained basically stable during the early and late stages of corrosion. The experimental results show that the corrosion monitoring structure based on fiber grating can truly reflect the corrosion situation of metals.

导出引用

岑远遥, 廖光萌, 何建新, 赵方超, 朱玉琴. 基于布拉格光纤光栅的腐蚀监测传感技术研究[J]. 装备环境工程. 2025, 22(10): 143-148 https://doi.org/10.7643/ issn.1672-9242.2025.10.017

CEN Yuanyao, LIAO Guangmeng, HE Jianxin, ZHAO Fangchao, ZHU Yuqin. Research on Corrosion Monitoring Sensing Technology Based on Bragg Fiber Grating[J]. Equipment Environmental Engineering. 2025, 22(10): 143-148 https://doi.org/10.7643/ issn.1672-9242.2025.10.017

中图分类号： TG172

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