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采用电化学方法制备了用于混凝土结构钢筋腐蚀监测的光纤传感器(FOCS),该方法基于电沉积于光纤纤芯上的敏感膜能够将腐蚀信息传递给光纤内传导的光波,从而获取腐蚀信息,实现腐蚀监测.对FOCS上Fe-C合金膜的腐蚀传感能力的研究表明:电化学腐蚀过程中光功率变化速度最大处的电位与腐蚀电流峰电位相对应.证明了采用光纤传感技术监测混凝土结构钢筋腐蚀是可行的.
An optical fiber sensor (FOCS) for corrosion monitoring of reinforced concrete structures was prepared by electrochemical method. The method based on the sensing film electrodeposited on the optical fiber core can transmit the corrosion information to the light wave propagating in the optical fiber so as to obtain corrosion information, Achieve corrosion monitoring. The research on the corrosion sensing ability of Fe-C alloy film on FOCS shows that the potential at the maximum speed of optical power change during electrochemical corrosion corresponds to the peak current of corrosion current. It is proved that it is feasible to detect the corrosion of concrete structure by optical fiber sensing technology.