A Novel Optical Fiber Sensor for Steel Corrosion in Concrete Structures.
A Novel Optical Fiber Sensor for Steel Corrosion in Concrete Structures.
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DOI：
10.3390/s8031960
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发表时间：
2008-03-20
期刊：
影响因子：
--
通讯作者：
Chen L
中科院分区：
文献类型：
--
作者：
Leung CK;Wan KT;Chen L
氯离子或二氧化碳的渗透对钢材的腐蚀是钢筋混凝土结构退化的主要原因。本研究的目的是开发一种基于非常简单的物理原理的低成本钢腐蚀传感器。利用离子溅射技术在切割后的光纤的平端涂上一层铁薄膜。然后，光被发送到嵌入混凝土的光纤中，反射的信号被监控。最初，大部分的光被铁层反射。当发生腐蚀以去除铁层时，很大一部分光功率将离开光纤的暴露端，反射功率大大降低。因此，监测反射信号是评估光纤尖端位置的混凝土环境是否会导致钢材腐蚀的有效方法。本文首先介绍了腐蚀传感器的原理和制作方法。实验结果验证了传感原理。将介绍用于实际安装的传感器封装，并通过附加实验评估封装传感器的性能。
Steel corrosion resulting from the penetration of chloride ions or carbon dioxide is a major cause of degradation for reinforced concrete structures,. The objective of the present investigation was to develop a low-cost sensor for steel corrosion, which is based on a very simple physical principle. The flat end of a cut optical fiber is coated with an iron thin film using the ion sputtering technique. Light is then sent into a fiber embedded in concrete and the reflected signal is monitored. Initially, most of the light is reflected by the iron layer. When corrosion occurs to remove the iron layer, a significant portion of the light power will leave the fiber at its exposed end, and the reflected power is greatly reduced. Monitoring of the reflected signal is hence an effective way to assess if the concrete environment at the location of the fiber tip may induce steel corrosion or not. In this paper, first the principle of the corrosion sensor and its fabrication are described. The sensing principle is then verified by experimental results. Sensor packaging for practical installation will be presented and the performance of the packaged sensors is assessed by additional experiments.
DOI：
10.1061/(asce)1090-0241(1999)125:12(1072
发表时间：
1999-12-01
影响因子：
3.9
作者：
Sinfield, JV;Germaine, JT;Hemond, HF
通讯作者：
Hemond, HF
影响因子：
11.4
作者：
Zhang, Jieying;Lounis, Zoubir
通讯作者：
Lounis, Zoubir