| 双涂层光纤应变传感器的理论与实验研究 |
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| 引用本文： | 杨军,刘志海,裴雅鹏,苑立波. 双涂层光纤应变传感器的理论与实验研究[J]. 光子学报, 2006, 35(6): 842-845 |
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| 作者姓名： | 杨军 刘志海 裴雅鹏 苑立波 |
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| 作者单位： | 哈尔滨工程大学理学院光子科学与技术研究中心,哈尔滨,150001;哈尔滨工程大学理学院光子科学与技术研究中心,哈尔滨,150001;哈尔滨工程大学理学院光子科学与技术研究中心,哈尔滨,150001;哈尔滨工程大学理学院光子科学与技术研究中心,哈尔滨,150001 |
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| 基金项目： | 香港理工大学基金(G.34.37.YD33)，国家自然科学基金(50179007)，教育部“高等学校优秀青年教师教学科研奖励计划”资助 |
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| 摘 要： | 对带有聚合物涂敷层和缓冲层的光纤应变传感器的力学特性进行了研究，建立了双涂层光纤与基体材料相互作用的线弹性理论模型.理论研究表明：在小半径近似条件下，双涂层光纤的力学传递特性决定于涂覆层和缓冲层的弹性模量的相对值；当缓冲层的弹性模量远大于涂覆层时，其作用可忽略.实验中，将光纤传感器埋入基体材料内部，利用白光干涉应变测量方法，对平均应变传递系数进行了实验研究.实验结果与理论仿真具有较好的一致性.
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| 关 键 词： | 光纤传感器 双涂覆层 应变 灵敏度系数 |
| 收稿时间： | 2005-03-28 |
| 修稿时间： | 2005-03-28 |
Theoretical and Experimental Study on Optical Fiber Strain Sensors with Double Coating |
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| Yang Jun,Liu Zhihai,Pei Yapeng,Yuan Libo. Theoretical and Experimental Study on Optical Fiber Strain Sensors with Double Coating[J]. Acta Photonica Sinica, 2006, 35(6): 842-845 |
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| Authors: | Yang Jun Liu Zhihai Pei Yapeng Yuan Libo |
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| Affiliation: | Photonics Research Center, School of Science, Harbin Engineering University, Harbin 150001 |
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| Abstract: | The mechanical transfer characteristics of single mode quartz fiber optic sensor with double coating is studied.The theoretical model of linear elasticity between quartz fiber optic with double polymer cladding coating and buffer are presented. The theoretical results demonstrates that the mechanical transfer characteristics of double coating depend on the relative magnitude of elastic modulus between cladding and buffer under the small radius approximation compared with the model of single coating. When the elastic modulus of buffer is much bigger than that of cladding, its action can be neglected.In the experiment,the experimental study on the average transfer coefficient of different scale fiber optic sensors embedded in the matrix material has been carried out based on white light interference method and the result of experiment accords well with that of theory. |
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| Keywords: | Optical fiber sensors(OFS) Double coating Strain Sensitivity coefficient |
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