碳涂覆光纤用于分布式裂缝检测的实验研究

The Distributed Crack Monitoring Using Carbon Coated Optical Fiber

作者：张少杰(四川大学水电学院)；陈江(中国水电顾问集团昆明勘测设计研究院)；闵兴鑫(四川大学水电学院)；叶丰(四川大学水电学院)；刘浩吾(四川大学水电学院)

Author：Zhang Shaojie(School of Hydraulic and Hydroelectric Eng., Sichuan Univ.)；Chen Jiang(Kunming Design and Research Inst. for Hydroelectric Projects)；MIn Xingxin(School of Hydraulic and Hydroelectric Eng., Sichuan Univ.)；Ye Feng(School of Hydraulic and Hydroelectric Eng., Sichuan Univ.)；Liu Haowu(School of Hydraulic and Hydroelectric Eng., Sichuan Univ.)

收稿日期：2009-05-06 年卷（期）页码：2010,42(4):230-233

期刊名称：工程科学与技术

Journal Name：Advanced Engineering Sciences

关键字：分布式光纤裂缝传感监测；碳光纤；光纤传感模型试验；传感灵敏度；动态范围

Key words：distributed optic-fiber crack monitoring;carbon coated optical fiber;optical fiber sensing model test;sensing sensitivity;dynamic range

基金项目：国家自然基金委、二滩水电开发有限公司“国家自然科学基金雅砻江水电开发联合研究基金”资助项目(50579094)

中文摘要

采用混凝土模型实验研究一种新型光纤—碳涂覆光纤的传感特性，测定了分布式光纤传感用于混凝土结构裂缝监测中的力-光本构关系和性能参数。表明碳涂覆光纤具有高分辨率（0.02 mm），动态范围（1～4.5 mm）明显优于普通单模光纤，从而弥补普通光纤应用于光纤裂缝传感时的某些缺陷，对在条件恶劣的情况下采用碳涂覆光纤进行工程健康监测提供了依据。

英文摘要

A new type of SM carbon coated optical fiber was tested using the concrete models of optical fiber crack sensing to get its mechanic optic constitutive relation and performance characteristics of concrete structural crack monitoring. The results indicated that the carbon coated optical fiber is able to monitor the development of the crack with high sensitivityof 0.02 mm and its dynamic range of 1～4.5 mm is larger significantly than the common SM optical fiber. Thereby it could offset the disadvantages of common SM optic-fibers for crack monitoring and be used in severe conditions.

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论文摘要

碳涂覆光纤用于分布式裂缝检测的实验研究

The Distributed Crack Monitoring Using Carbon Coated Optical Fiber