基于分布式的布里渊光学时域反射的光纤腐蚀传感器的实验研究.pdf

22 3 20 11 3 Journal of Optoelectronics Laser Vo l. 22 No . 3 M ar. 20 11 基于分布式布里渊光学时域反射的光纤腐蚀传感器的 实验研究 1* 1 1 1, 2 赵雪峰 , 宫 鹏, 路 杰, 欧进萍 ( 1. , 116024; 2. , 150090) : ( BOT DR) , , , , , 0. 0~ 0. 1% , 1. 1 10- 5 : ( BOT DR) ; ; ; ; : T P212 : A : 2011) Experimental research on the fiber corrosion sensor based on dis tributedBrillouin optical time domain reflection technique 1* 1 1 1, 2 ZH AO Xueeng , GONG Peng , LU Jie , OU Jinping ( 1. School o Civil Engineering , Dalian University o Technology , Dalian 116024, China; 2. Schoo l o Civil Engineer ing, Har bin Institute o Technology , Harbin 150090 ,China) Abstract: A novel iber corrosion sensor based on distributed Brillouin opt ical time domain re lection ( BOT DR) has been developed, which can monitor st eel corrosion in concrete structures. T he choosing method o valid sampling points on opt ical iber w as proposed, and urt hermore, the evaluation ormula w as derived to make quantitat ive assessment o steel corrosion. T he properties o BOTDR iber corrosion sensors embedded in concrete structures w ere researched in t he electrochemical corrosion accelerating testing system , and the degree o steel corrosion was gained through the evaluat ion ormula and data col lected by the BOTDR analyzer. T he test results show that BOTDR iber corrosion sensors can monitor steel corrosion in early st age e ect ively, and can