胶粘剂对表贴式聚酰亚胺光纤布拉格光栅应变传递的影响分析
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摘要
光纤布拉格光栅传感器用于测量结构的应变时,需与被测基体相粘黏,使其与基体协调变形,故胶粘剂的选取对其测量结果有直接的影响。针对此问题,本文对表面粘贴式应变传递模型进行了改进,建立了更为合理的模型,并通过理论分析出了影响应变传递率的主要因素,得到了其传递率随胶体剪切模量的增大而增大的结论。通过控制变量法,用480胶、AB胶、401胶、环氧树脂、3311胶这五种不同胶粘剂,将聚酰亚胺光纤光栅粘贴于等强度梁表面进行对比实验,得到了相应的应变传递率,其结果与理论模型计算值相比误差在5%左右,为表面粘贴式光纤光栅测量应变的工程应用提供了重要的参考。
When the fiber Bragg grating sensor is used to measure the strain of a structure,it needs to be pasted and generates a coordination deformation with the measured substrate. Therefore,the selection of adhesives has a direct influence on the measurement results. To solve this problem,by improving surface bonded strain transfer model,a more reasonable model is built to analyze main factors affecting strain transfer coefficient. The theoretical analysis indicates that average strain transfer coefficient increases along with the increase of shear modulus of adhesive. By controlling variables,Polyimide FBGs are pasted on the surface of equal strength beam for a contrast experiment with Loctite 480 adhesive,AB adhesive,Loctite 401 adhesive,epoxy resin adhesive,and Loctite 3311 adhesive. The corresponding strain transfer coefficients have around 5% relative error with the calculation of the theoretical model.The results provide an important reference for engineering applications of surface bonded FBG strain measurement.
When the fiber Bragg grating sensor is used to measure the strain of a structure,it needs to be pasted and generates a coordination deformation with the measured substrate. Therefore,the selection of adhesives has a direct influence on the measurement results. To solve this problem,by improving surface bonded strain transfer model,a more reasonable model is built to analyze main factors affecting strain transfer coefficient. The theoretical analysis indicates that average strain transfer coefficient increases along with the increase of shear modulus of adhesive. By controlling variables,Polyimide FBGs are pasted on the surface of equal strength beam for a contrast experiment with Loctite 480 adhesive,AB adhesive,Loctite 401 adhesive,epoxy resin adhesive,and Loctite 3311 adhesive. The corresponding strain transfer coefficients have around 5% relative error with the calculation of the theoretical model.The results provide an important reference for engineering applications of surface bonded FBG strain measurement.
引文
[1]李宏男,任亮.结构健康监测光纤光栅传感技术[M].北京:中国建筑工业出版社,2008.
[2]吴入军,郑百林,付昆昆,等.表面粘贴式光纤布拉格光栅传感器层状结构对测量应变的影响[J].光学精密工程,2014,22(12):3183-3190.
[3] Ansari F,Yuan L. Mechanics of Bond and Interface Shear Transfer in Optical Fiber Sensors[J]. Journal of Engineering Mechanics,1998,124(4):385-394.
[4] Duck G,Renaud G,Measures R. The Mechanical Load Transfer into a Distributed Optical Fiber Sensor due to a Linear Strain Gradient:Embedded and Surface Bonded Cases[J]. Smart Materials&Structures,1999,8(2):175.
[5] Wu R,Zheng B,Liu Z,et al. Analysis on Strain Transfer of a Pasted FBG Strain Sensor[J]. Optik-International Journal for Light and Electron Optics,2014,125(17):4924-4928.
[6]李东升,李宏男.埋入式封装的光纤光栅传感器应变传递分析[J].力学学报,2005,37(4):435-441.
[7] Zhao H T,Wang Q B,Qiu Y,et al. Strain Transfer of SurfaceBonded Fiber Bragg Grating Sensors for Airship Envelope Structural Health Monitoring[J]. Journal of Zhejiang UniversitySCIENCE A,2012,13(7):538-545.
[8]柴敬,刘奇,张渤,等.基于聚酰亚胺的FBG湿度传感特性及细观特征研究[J].光电子·激光,2016,27(3):239-246.
[9]向光华,忽满利,乔学光,等.基于聚酰亚胺材料的FBG湿度传感特性研究[J].光电子·激光,2012,23(1):41-45.
[10]李红,祝连庆,刘锋,等.裸光纤光栅表贴结构应变传递分析与实验研究[J].仪器仪表学报,2014(8):1744-1750.
[11] Sun Y,Liu J,Wang Y,et al. Principles and Application of Polyimide Fiber Bragg Gratings for Surface Strain Measurement[J]. Appl Sci,2017,7:995.
[12] Sante R D,Donati L,Troiani E,et al. Reliability and Accuracy of Embedded Fiber Bragg Grating Sensors for Strain Monitoring in Advanced Composite Structures[J]. Metals&Materials International,2014,20(3):537-543.
[13]章征林,王源,孙阳阳,等.胶粘剂对表贴式FBG传感器应变传递系数的影响[J].复合材料学报,2016,33(11):2537-2542.
[14]吴俊,陈伟民,章鹏,等.粘接层弹性模量对光纤Bragg光栅传感器应变传递性能的影响[J].光学精密工程,2011,19(12):2941-2946.
[15]孙丽.光纤光栅传感应用问题解析[M].北京:科学出版社,2012.
[16]郭伟,李新良,宋昊.表面粘贴光纤光栅传感器的应变传递分析[J].计测技术,2011,31(4):1-4.
[17]廖延彪.光纤光学:原理与应用[M].北京:清华大学出版社,2010.
[18]张自嘉.光纤光栅理论基础与传感技术[M].北京:科学出版社,2009.
[19]周承湖.光纤光栅在建筑物应变测量中的应用[D].北京:北京工业大学,2002.
[20]于秀娟,余有龙,张敏,等.钛合金片封装光纤光栅传感器的应变和温度传感特性研究[J].光电子·激光,2006,17(5):564-567.
[21]高炳军,苏秀苹.测定电阻应变计灵敏系数的一种方法[J].传感器与微系统,1998(4):49-51.
[2]吴入军,郑百林,付昆昆,等.表面粘贴式光纤布拉格光栅传感器层状结构对测量应变的影响[J].光学精密工程,2014,22(12):3183-3190.
[3] Ansari F,Yuan L. Mechanics of Bond and Interface Shear Transfer in Optical Fiber Sensors[J]. Journal of Engineering Mechanics,1998,124(4):385-394.
[4] Duck G,Renaud G,Measures R. The Mechanical Load Transfer into a Distributed Optical Fiber Sensor due to a Linear Strain Gradient:Embedded and Surface Bonded Cases[J]. Smart Materials&Structures,1999,8(2):175.
[5] Wu R,Zheng B,Liu Z,et al. Analysis on Strain Transfer of a Pasted FBG Strain Sensor[J]. Optik-International Journal for Light and Electron Optics,2014,125(17):4924-4928.
[6]李东升,李宏男.埋入式封装的光纤光栅传感器应变传递分析[J].力学学报,2005,37(4):435-441.
[7] Zhao H T,Wang Q B,Qiu Y,et al. Strain Transfer of SurfaceBonded Fiber Bragg Grating Sensors for Airship Envelope Structural Health Monitoring[J]. Journal of Zhejiang UniversitySCIENCE A,2012,13(7):538-545.
[8]柴敬,刘奇,张渤,等.基于聚酰亚胺的FBG湿度传感特性及细观特征研究[J].光电子·激光,2016,27(3):239-246.
[9]向光华,忽满利,乔学光,等.基于聚酰亚胺材料的FBG湿度传感特性研究[J].光电子·激光,2012,23(1):41-45.
[10]李红,祝连庆,刘锋,等.裸光纤光栅表贴结构应变传递分析与实验研究[J].仪器仪表学报,2014(8):1744-1750.
[11] Sun Y,Liu J,Wang Y,et al. Principles and Application of Polyimide Fiber Bragg Gratings for Surface Strain Measurement[J]. Appl Sci,2017,7:995.
[12] Sante R D,Donati L,Troiani E,et al. Reliability and Accuracy of Embedded Fiber Bragg Grating Sensors for Strain Monitoring in Advanced Composite Structures[J]. Metals&Materials International,2014,20(3):537-543.
[13]章征林,王源,孙阳阳,等.胶粘剂对表贴式FBG传感器应变传递系数的影响[J].复合材料学报,2016,33(11):2537-2542.
[14]吴俊,陈伟民,章鹏,等.粘接层弹性模量对光纤Bragg光栅传感器应变传递性能的影响[J].光学精密工程,2011,19(12):2941-2946.
[15]孙丽.光纤光栅传感应用问题解析[M].北京:科学出版社,2012.
[16]郭伟,李新良,宋昊.表面粘贴光纤光栅传感器的应变传递分析[J].计测技术,2011,31(4):1-4.
[17]廖延彪.光纤光学:原理与应用[M].北京:清华大学出版社,2010.
[18]张自嘉.光纤光栅理论基础与传感技术[M].北京:科学出版社,2009.
[19]周承湖.光纤光栅在建筑物应变测量中的应用[D].北京:北京工业大学,2002.
[20]于秀娟,余有龙,张敏,等.钛合金片封装光纤光栅传感器的应变和温度传感特性研究[J].光电子·激光,2006,17(5):564-567.
[21]高炳军,苏秀苹.测定电阻应变计灵敏系数的一种方法[J].传感器与微系统,1998(4):49-51.