预紧组合结构的层间压力测试和模拟技术研究
|
摘要
为了测试预紧组合结构的层间压力,以光子晶体光纤为敏感单元,采用Sagnac干涉技术建立了保偏光子晶体光纤(PM-PCF)压力传感模型和测试系统,对传感器敏感度和压力传感特性进行了试验验证,分析了光纤受压长度、受压形状等因素对压力传感特性的影响,并给出了光纤压力传感器测试数据的修正方法。研究结果表明:PM-PCF传感器的精度(分辨率)可达到0.1‰,但其压力灵敏度与光纤的受压长度和受压方向等因素有关,当受压方向接近慢轴时传感器的压力灵敏系数为可以达到0.441 4 nm/kN。数值模拟和测试数据的对比分析,确定了光纤压力传感器测试数据的修正系数为1.14。
In order to monitor interlayer pressures of connection structure with pre-tightening silicone foam cushion.A pressure sensing mode is proposed by using polarization-maintaining photonic crystal fiber(PM-PCF) as sensitive units and Sagnac interferometer,the sensitivity and pressure sensing characteristics of the sensor were validated by experiments.The influence of loaded length and loaded position of fiber on pressure sensing characteristics was analyzed,and a modification method of test data of PM-PCF sensor was provided.The results showed that the feasibility of the design.The test results show the accuracy of PM-PCF sensor can reach within 0.1‰,and the pressure sensitivity of PM-PCF sensor is related to loaded length and loaded direction of fiber.When loaded direction is close to slow-axis of fiber,the PM-PCF sensor′s pressure sensitivity can reach 0.441 4 nm/kN.By comparing the results of theoretical method,numerical simulation and experimental measurement,the modification factors of the testing data from PM-PCF sensor is 1.14.Conclusion provides theoretical and test basis for the application and of fiber optic pressure sensor.
In order to monitor interlayer pressures of connection structure with pre-tightening silicone foam cushion.A pressure sensing mode is proposed by using polarization-maintaining photonic crystal fiber(PM-PCF) as sensitive units and Sagnac interferometer,the sensitivity and pressure sensing characteristics of the sensor were validated by experiments.The influence of loaded length and loaded position of fiber on pressure sensing characteristics was analyzed,and a modification method of test data of PM-PCF sensor was provided.The results showed that the feasibility of the design.The test results show the accuracy of PM-PCF sensor can reach within 0.1‰,and the pressure sensitivity of PM-PCF sensor is related to loaded length and loaded direction of fiber.When loaded direction is close to slow-axis of fiber,the PM-PCF sensor′s pressure sensitivity can reach 0.441 4 nm/kN.By comparing the results of theoretical method,numerical simulation and experimental measurement,the modification factors of the testing data from PM-PCF sensor is 1.14.Conclusion provides theoretical and test basis for the application and of fiber optic pressure sensor.
引文
[1] WANG Jiang,ZHOU Shi-liang.Numerical simulation of co-ntact status on connection structure with pre-tightening porous silicone rubber cushion[J].Journal of Chong Qing Jiao Tong University,2007,26(1):133-137.
[2] LIU Zhan-fang,WANG Jiang,ZHANG Hua.Dynamics property of structure with pr-tightening silicone rubber cushion[J].China Mechanical Engineering,2007,18(1):1668-1672.
[3] XIAO Shi-fu,SHEN Zhan-peng,CHEN Xue-qian,et al.Study on dynamic behavior and stability of an eccentric pre-tightened cushion structure[J].China Mechanical Engineering,2012,23(10):2290-2296.
[4] YIN Yi-hui,LIU Yuan-dong,SHI Ping-an.An approximate method for analysis of pretightened combined the distribution of stress of silicone foam cushion structures with foam blocks[J].Spacecraft Environment Engineering,2009,26(1):71-73.
[5] Gong H,Chan C C,Chen L Dong X.Strain sensor realized by using low-birefringence photonic-crystal-fiber-based sagnac loop[J].Photonics Technology Letters,IEEE,2010,22(16):1238-1240.
[6] SU Hong-xin,WANG Kun,CUI Jian-hua,et al.Research progress of photonic crystalfiber sensor[J].Instrument Technique and Sensor,2008,2:6-8.
[7] Wojcik J,Mergo P,Makara M,et al.V type high birefringent PCF fiber for hydrostaticpressure sensing[J].Photonics Society of Poland,2010,2(1):10-12.
[8] Charles M.Jewart,Sully Mejia Quintero.Design of a highly-birefringent microstructured photonic crystal fiber for pressure monitoring[J].Optics Express,2010,18(25):25657-25664.
[9] YANG Yuan-hong,ZHANG Xing,JIN Wei,et al.Embedded pressure sensor based on birefringent photonic crystal fiber[J].Sensors and Actuators A,2006,128:33-36.
[10] Yang Yuan-hong,Wang Huan,Yang Fu-ling,et al.Polarization maintaining based on photonic crystal fiber hydrogen sensor sagnac interferometer[J].Acta Optica Sinica,2014,34(8):06004-1-06004-5.
[11] YANG Yuan-hong,LIU Shuo,LU Lin,et al.Temperature-insensitive pressure sensing technology based on polarization maintaining photonic crystal fiber Sagnac interferometer[J].Infrared and Laser Engineering,2016,45(8):0802002-1-6.
[12] ZHANG Yi,ZHUANG Zhi,CHEN Ying.On-line pressure monitoring method based on photonic crystal fiber[J].Chinese Journal of Sensors and Actuators,2015,28(5):613-617.
[13] LI Sha.Characteristics analysis and theoretical study of the photonic crystal fiber[D].YanShan University,2012,8-9.
[14] LIU De-hua,JIN Wei-liang,ZHANG Yu-xiang.Strain transfer relationship between optical fiber sensor and structure matrix[J].Journal of Zhejiang University,2006,40(11):1847-1851.
[2] LIU Zhan-fang,WANG Jiang,ZHANG Hua.Dynamics property of structure with pr-tightening silicone rubber cushion[J].China Mechanical Engineering,2007,18(1):1668-1672.
[3] XIAO Shi-fu,SHEN Zhan-peng,CHEN Xue-qian,et al.Study on dynamic behavior and stability of an eccentric pre-tightened cushion structure[J].China Mechanical Engineering,2012,23(10):2290-2296.
[4] YIN Yi-hui,LIU Yuan-dong,SHI Ping-an.An approximate method for analysis of pretightened combined the distribution of stress of silicone foam cushion structures with foam blocks[J].Spacecraft Environment Engineering,2009,26(1):71-73.
[5] Gong H,Chan C C,Chen L Dong X.Strain sensor realized by using low-birefringence photonic-crystal-fiber-based sagnac loop[J].Photonics Technology Letters,IEEE,2010,22(16):1238-1240.
[6] SU Hong-xin,WANG Kun,CUI Jian-hua,et al.Research progress of photonic crystalfiber sensor[J].Instrument Technique and Sensor,2008,2:6-8.
[7] Wojcik J,Mergo P,Makara M,et al.V type high birefringent PCF fiber for hydrostaticpressure sensing[J].Photonics Society of Poland,2010,2(1):10-12.
[8] Charles M.Jewart,Sully Mejia Quintero.Design of a highly-birefringent microstructured photonic crystal fiber for pressure monitoring[J].Optics Express,2010,18(25):25657-25664.
[9] YANG Yuan-hong,ZHANG Xing,JIN Wei,et al.Embedded pressure sensor based on birefringent photonic crystal fiber[J].Sensors and Actuators A,2006,128:33-36.
[10] Yang Yuan-hong,Wang Huan,Yang Fu-ling,et al.Polarization maintaining based on photonic crystal fiber hydrogen sensor sagnac interferometer[J].Acta Optica Sinica,2014,34(8):06004-1-06004-5.
[11] YANG Yuan-hong,LIU Shuo,LU Lin,et al.Temperature-insensitive pressure sensing technology based on polarization maintaining photonic crystal fiber Sagnac interferometer[J].Infrared and Laser Engineering,2016,45(8):0802002-1-6.
[12] ZHANG Yi,ZHUANG Zhi,CHEN Ying.On-line pressure monitoring method based on photonic crystal fiber[J].Chinese Journal of Sensors and Actuators,2015,28(5):613-617.
[13] LI Sha.Characteristics analysis and theoretical study of the photonic crystal fiber[D].YanShan University,2012,8-9.
[14] LIU De-hua,JIN Wei-liang,ZHANG Yu-xiang.Strain transfer relationship between optical fiber sensor and structure matrix[J].Journal of Zhejiang University,2006,40(11):1847-1851.