3D打印光纤光栅环向应变传感器  

3D Printed FBG Hoop Strain Sensors

作　　者：罗广彬 洪成雨 饶伟 林国琪 陈宇瀚 LUO Guangbin;HONG Chengyu;RAO Wei;LIN Guoqi;CHEN Yuhan(College of Civil and Transportation Engineering,Shenzhen University,Shenzhen Guangdong 518060,China;Shenzhen Key Laboratory of Green,Efficient and Intelligent Construction of Underground Metro Station,Shenzhen University,Shenzhen Guangdong 518060,China;Underground Polis Academy,Shenzhen University,Shenzhen Guangdong 518060,China)

机构地区：[1]深圳大学土木与交通工程学院,广东深圳518060 [2]深圳市地铁地下车站绿色高效智能建造重点实验室,深圳大学,广东深圳518060 [3]深圳大学未来地下城市研究院,广东深圳518060

出　　处：《传感技术学报》2022年第5期581-586,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金高铁联合基金项目(U2034204);国家自然科学基金面上项目(52078303)。

摘　　要：基于3D打印即熔融沉积造型技术(Fused deposition modelling,FDM)制造了光纤布拉格光栅(Fiber Bragg grating,FBG)环向应变传感器,通过室内多次循环单轴压缩试验验证传感器的测量性能。通过拉伸标定试验表明:FBG应变传感器的波长与伸长率呈线性关系,FBG传感器的灵敏度和最小分辨率分别为0.022 nm/mm和0.114 mm;最大误差为1.6%。通过单轴压缩试验表明:不同荷载下传感器的波长变化线性度良好,相对误差在10%以内,验证了FBG环向应变传感器可用于钢筋、管道等圆柱体结构的环向变形监测。A fiber Bragg grating(FBG)hoop strain sensor was fabricated based on 3 D printing(Fused deposition modelling,FDM)technology,and the measurement performance of the sensor was verified through multiple cycles of indoor uniaxial compression tests.The tensile calibration test shows that the wavelength of the FBG strain sensor has a linear relationship with the elongation rate.The sensitivity and the minimum resolution of the FBG sensor are 0.022 nm/mm and 0.114 mm respectively;the maximum error is 1.6%.The uniaxial compression test shows that the wavelength change of the sensor has good linearity under different loads,and the relative error is within 10%,which verifies that the FBG hoop strain sensor can be used for hoop deformation monitoring of cylindrical structures such as steel bars and pipes.

关 键 词：3D打印 布拉格光纤光栅 环向应变 监测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH74[自动化与计算机技术—控制科学与工程]