摘要
提出了一种测量钢筋腐蚀的新型传感器·这种传感器将光纤光栅拉伸后固定在圆形钢筋的表面,在钢筋被腐蚀后,光纤光栅所受到的拉伸应变将被释放,光纤光栅的反射光波长发生变化,通过测量光纤光栅的波长就可以测得钢筋腐蚀程度·这种传感器测量准确度优于±0.1μm,测量范围约12μm,可用于混凝土结构中钢筋腐蚀的早期监测·
A new type of corrosion sensor for reinforcing steel was developed in this paper. The optical fiber grating was pre-strained when it was fixed on the surface of cylindrate steel bar. The strain would be released when the steel was eroded, the wavelength of FBG will be changed accordingly. The corrosion depth could be measured by detecting the wavelength of fiber grating. The precision was better than 0. 1 μm and the measuring depth scope of 12 μm could be obtained. The sensor could be used to monitor the early corrosion of reinforcing steel in concrete structure.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2006年第1期96-99,共4页
Acta Photonica Sinica
基金
国家863资助项目(2004AA616020)
关键词
光纤光栅
光纤传感器
腐蚀
Fiber grating
Fiber Optical Sensor
Corrosion
