光纤布喇格光栅应变传感器结构优化研究

提出了一种改进的光纤光栅应变传感器结构，用有限元分析软件对其进行建模和静力仿真，得到其应力分布和光栅区域的应变情况.在整体宽度与厚度相等的情况下，此结构的灵敏度约为传统“工”字型结构的600倍.进一步分析了其关键区域的6个结构参量对应变灵敏度及量程的影响.筛选、设计并加工出不同尺寸的两种应变片，分别用UV胶与玻璃焊料对光栅进行封装,得到灵敏度分别为：249 pm/N、330 pm/N和1.1 pm/N.比较分析表明,本文提供的分析方法与数据，可为不同工程应用场合的最优结构设计提供依据.

Abstract

The dependence of a fiber Bragg grating strain sensor on the improved structure parameters was investigated both numerically and experimentally. The stress distribution and the strain of the grating region was obtained. In the case of the overall width and thickness are equal, the sensitivity of this structure is about 600 times higher than the traditional I-shaped structure. The influence of the 6 key structure parameters on the strain sensitivity and the measurement range was analyzed in detail. Experimental results were also given compared with the numerical simulated results. The gratings were packaged respectively with UV glue and glass solder to get the sensitivities were: 249 pm/N, 330 pm/N and 1.1 pm/N. The analysis method and data provided a basis for structural optimum design of fiber Bragg grating strain sensors in different applications.

参考文献

[1] 周智，赵雪峰，武湛君，等. 光纤光栅毛细钢管封装工艺及其传感特性研究［J］. 中国激光，2002，29(12)：1089-1092.

ZHOU Zhi, ZHAO Xue-feng, WU Zhan-jun, et al. Study on FBG sensor's steel capillary encapsulating technique and sensing properties［J］. Chinese Journal of Lasers, 2002, 29(12): 1089-1092.

[2] 任亮. 光纤光栅传感技术在结构健康监测中的应用［D］. 大连: 大连理工大学, 2008.

REN Liang. The application of fiber bragg grating technology in structure health monitoring［D］. Dalian: Dalian University of Technology, 2008.

[3] 胡曙阳, 赵启大, 何士雅, 等. 金属管封装光纤光栅用于建筑钢筋应变的测量［J］. 光电子·激光, 2004, 15(6): 688-690.

HU Shu-yang, ZHAO Qi-da, HE Shi-ya, et al. Strain measurement in construction steel bar using a FBG sensor coated by a thin metal tube［J］. Journal of Optoelectronics·Laser, 2004, 15(6): 688-690.

[4] 李川, 李欣, 孙宇. 光纤Bragg光栅传感器在钢筋混凝土梁静荷载试验中的研究［J］. 土木工程学报,2005, 38(2): 64-67.

LI Chuan, LI Xin, SIN Yu. Research of fiber Bragg grating sensors in dead load test of RC girder［J］. China Civil Engineering Journal, 2005, 38(2): 64-67.

[5] 于秀娟, 余有龙, 张敏, 等. 铜片封装光纤光栅传感器的应变和温度传感特性研究［J］. 光子学报, 2006, 35(9): 1325-1328.

YU Xiu-juan, YU You-long, ZHANG Min, et al. Study on the strain and temperature sensing characteristics of FBG packaged by the copper slice ［J］. Acta Photonica Sinica, 2006, 35(9): 1325-1328.

[6] 李惠, 欧进萍. 斜拉桥结构健康监测系统的设计与实现(Ⅱ): 系统实现［J］. 土木工程学报, 2006, 39(4): 45-53.

LI Hui, OU Jin-ping. Design and implementation of health monitoring systems for cable-stayed bridges(II): implementations［J］. China Civil Engineering Journal, 2006, 39(4): 45-53.

[7] 李爱群, 周广东. 光纤Bragg光栅传感器测试技术研究进展与展望 (I): 应变、温度测试［J］. 东南大学学报(自然科学版),2009, 39(6): 1299-1301.

LI Ai-qun, ZHOU Guang-dong. Progress and prospect of fiber Bragg grating sensors measurement technology (I): strain and temperature measurement［J］. Journal of Southeast University (Natural Science Edition), 2009, 39(6): 1299-1301.

[8] 孙丽, 孙茜茜, 任亮, 等. 应用光纤布喇格光栅传感器监测地下管道腐蚀的新方法研究［J］. 光子学报, 2012, 41(1): 6-10.

SUN Li, SUN Qian-qian, REN Liang, et al. A new method for underground pipeline corrosion monitoring applied FBG［J］. Acta Photonica Sinica, 2012, 41(1): 6-10.

[9] 杜磊, 龚元, 吴宇, 等. 光纤布喇格光栅沉降传感器［J］. 光子学报, 2011, 40(12): 1878-1880.

DU Lei, GONG Yuan, WU Yu, et al. Fiber bragg grating settlement sensors［J］. Acta Photonica Sinica, 2011, 40(12): 1878-1880.

[10] 饶云江. 光纤光栅原理及应用［M］.王义平, 朱涛. 科学出版社, 2006: 139.

[11] 杜彦良, 刘晨曦, 李剑芝. 光纤Bragg光栅粘贴式应变传感器的研究［J］. 铁道科学与工程学报, 2008, 5(6): 11.

DU Yan-liang, LIU Chenxi, LI Jian-zhi. Study on fiber Bragg grating attached strain sensor［J］. Journal of Railway Science and Engineering, 2008, 5(6): 11.

[12] 周广东, 李宏男, 任亮, 等. 光纤光栅传感器应变传递影响参量研究［J］. 工程力学, 2007, 24(6): 171-173.

ZHOU Guang-dong, LI Hong-nan, REN Liang, et al. Study on influencing parameters of strain transfer of optic fiber Bragg grating sensors［J］. Engineering Mechanics, 2007, 24(6): 171-173.

袁子琳, 龚元, 马耀远, 杜磊, 吴宇, 饶云江, 吴慧娟, 王浚璞, 万夫. 光纤布喇格光栅应变传感器结构优化研究[J]. 光子学报, 2012, 41(11): 1261. YUAN Zi-lin, GONG Yuan, MA Yao-yuan, DU Lei, WU Yu, RAO Yun-jiang, WU Hui-juan, WANG Jun-pu, WAN Fu. Structure Optimization of Fiber Bragg Grating Strain Sensors[J]. ACTA PHOTONICA SINICA, 2012, 41(11): 1261.

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