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光纤光栅CFRP混凝土复合拱裂缝监测实验研究

Experimental Study on Fiber Bragg Grating Monitoring the Crack of CFRP Concrete Composite Arch

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摘要

针对碳纤维复合材料(CFRP)混凝土复合拱裂缝监测问题,尝试了使用裸光纤布拉格光栅(FBG)应变传感器监控CFRP 混凝土复合拱初始开裂。从力学角度分析并确定粘贴位置,并对点粘和满粘(点粘是指只粘贴栅区两端点,而满粘将胶涂满整个栅区)两种不同粘贴方法开展研究。对比光纤光栅和应变片测量数据,验证光纤光栅测量应变的准确性和稳定性。运用K 值标准差准则,将开裂规律定量化。实验结果表明通过合理布设光纤光栅,可以监测结构的初始开裂,并且光纤光栅和应变片测量数据具有较好的一致性。

Abstract

To the crack monitoring of the carbon fibre reinforced plastics (CFRP) concrete composite arch, an experiment is conducted to monitor the appearance of the crack with bare fiber Bragg grating (FBG) strain sensors. The location of fiber Bragg grating (FBG) is determined via mechanic analysis, two kinds of pasting method is studied: local and distributed coupling (in the first case the measurement fiber is attached to the host structure at two points, in the second case the measurement fiber is attached along the whole active region). A comparison between the data of FBG and strain gauge is conducted to validate the precision and stability of FBG. The test results show the quantitative rule of crack initiation via K value standard deviation criterion. The initial cracking can be monitored by arranging the FBG sensors appropriately, good consistency can be achieved between FBG and strain gauge.

Newport宣传-MKS新实验室计划
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中图分类号:TP212.9

DOI:10.3788/cjl201542.0805004

所属栏目:光通信

基金项目:国家973计划(2010CB732003,2013CB036005)、教育部长江学者和创新团队发展计划(IRT13071)

收稿日期:2015-02-10

修改稿日期:2015-04-01

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作者单位    点击查看

岳音:解放军理工大学国防工程学院, 江苏 南京 210007
王源:解放军理工大学国防工程学院, 江苏 南京 210007
段建立:解放军理工大学国防工程学院, 江苏 南京 210007
张清华:解放军理工大学国防工程学院, 江苏 南京 210007

联系人作者:岳音(15251895292@163.com)

备注:岳音(1992—),女,硕士研究生,主要从事光纤传感监测方面的研究。

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引用该论文

Yue Yin,Wang Yuan,Duan Jianli,Zhang Qinghua. Experimental Study on Fiber Bragg Grating Monitoring the Crack of CFRP Concrete Composite Arch[J]. Chinese Journal of Lasers, 2015, 42(8): 0805004

岳音,王源,段建立,张清华. 光纤光栅CFRP混凝土复合拱裂缝监测实验研究[J]. 中国激光, 2015, 42(8): 0805004

被引情况

【1】王巧妮,杨远洪,何俊,王义平. 光纤布拉格光栅再生过程及模型研究. 光学学报, 2016, 36(3): 306001--1

【2】孙诗惠,余有龙,李慧,钱牧云,赵曾,殷参,赖小明. 基于光纤光栅的应力波检测技术研究. 中国激光, 2016, 43(5): 505002--1

【3】丁旭东,张钰民,宋言明,杨润涛,祝连庆. 纯石英芯光纤光栅高温应变响应特性. 中国激光, 2017, 44(11): 1106003--1

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