基于光纤的传感器，通过刻蚀包层布拉格光栅监测钢筋腐蚀。

Optical-based sensors for monitoring corrosion of reinforcement rebar via an etched cladding Bragg grating.

机构信息

Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.

出版信息

Sensors (Basel). 2012 Nov 14;12(11):15820-6. doi: 10.3390/s121115820.

DOI:10.3390/s121115820

PMID:23202233

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3522986/

Abstract

In this paper, we present the development and testing of an optical-based sensor for monitoring the corrosion of reinforcement rebar. The testing was carried out using an 80% etched-cladding Fibre Bragg grating sensor to monitor the production of corrosion waste in a localized region of the rebar. Progression of corrosion can be sensed by observing the reflected wavelength shift of the FBG sensor. With the presence of corrosion, the etched-FBG reflected spectrum was shifted by 1.0 nm. In addition, with an increase in fringe pattern and continuously, step-like drop in power of the Bragg reflected spectrum was also displayed.

摘要

本文介绍了一种用于监测钢筋腐蚀的基于光学的传感器的开发和测试。该测试使用 80%刻蚀包层光纤布拉格光栅传感器来监测钢筋局部区域腐蚀产物的产生。通过观察 FBG 传感器的反射波长移动，可以感知腐蚀的进展。随着腐蚀的发生，刻蚀 FBG 的反射光谱发生了 1.0nm 的移动。此外，随着条纹图案的增加，布拉格反射光谱的功率也呈现出连续的阶跃式下降。