| 新型可测量大变形的弯曲型光纤光栅裂缝传感器 |
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| 引用本文： | 包腾飞,赵津磊,张万祝,阎培林.新型可测量大变形的弯曲型光纤光栅裂缝传感器[J].中国科学(E辑),2014(10):1013-1019. |
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| 作者姓名： | 包腾飞 赵津磊 张万祝 阎培林 |
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| 作者单位： | 河海大学水文水资源与水利工程科学国家重点实验室;河海大学水利水电学院;中国水电顾问集团北京勘测设计研究院有限公司; |
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| 基金项目： | 国家自然科学基金(批准号:51379068,51139001);江苏省杰出青年基金(批准号:BK20140039);新世纪优秀人才支持计划(编号:NCET-11-0628);高等学校博士学科点专项科研基金(批准号:20120094110005);中央高校基本科研业务费(编号:2012B07214)资助项目 |
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| 摘 要： | 光纤光栅传感技术以其自身的优势,在结构裂缝监测等工作中得到了广泛的应用,然而由于其自身很容易折断的特点,其测量的范围较小.在前人研究成果的基础上,设计了一种简易弯曲型光纤光栅裂缝传感装置,并通过实验对此传感装置的性能进行了验证.实验结果表明,本裂缝传感装置切实可行,可明显提高普通光栅光纤传感器的测量范围,而且具体良好的重复使用能力,以应对实际工程中裂缝开展情况的不确定性.
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| 关 键 词： | 光纤光栅 裂缝监测 弯曲型 混凝土结构 |
Bend type fiber Bragg grating crack sensor with big measurement range |
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| Institution: | BAO TengFei, ZHAO JinLei, ZHANG WanZhu, YAN PeiLin(1 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; 2 College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 3 Beijing Engineering Corporation Limited, HYDROCHINA Corporation, Beijing 100024, China) |
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| Abstract: | Fiber Bragg grating（FBG） sensing technique has been widely applied to structual crack monitoring due to its advantages over other sensors. However, the meausrement range of FBG sensors is small due to easy breakage of silica fiber. In this paper, using current research results for reference, a simple bend type FBG crack sensing setup was designed. The performance of the sensor was verified through experiments. The experimental results show that the crack sensing of the sensor is reliable, the measurement range can be extended a lot compared with traditional FBG crack sensors, and that the sensor possesses good repeatability to cope with the uncertainty of crack development. |
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| Keywords: | fiber Bragg grating crack monitoring bend type concrete strcutures |
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