| 浮空器柔性复合蒙皮形变光纤布拉格光栅传感器应变传递特性 |
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| 引用本文： | 刘炳锋,董明利,孙广开,何彦霖,祝连庆.浮空器柔性复合蒙皮形变光纤布拉格光栅传感器应变传递特性[J].红外与激光工程,2021,50(5):20200315-1-20200315-9. |
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| 作者姓名： | 刘炳锋 董明利 孙广开 何彦霖 祝连庆 |
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| 作者单位： | 1.北京信息科技大学 光电测试技术及仪器教育部重点实验室，北京 100192 |
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| 基金项目： | 国家自然科学基金青年科学基金（61903041）；北京市自然基金?市教委联合基金项目（KZ201911232044）；北京市自然科学基金（7202017，4204101）；北京市科技新星计划项目（Z191100001119052） |
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| 摘 要： | 为提高浮空器气囊蒙皮形变光纤布拉格光栅监测的应变传递效率，研究了柔性复合蒙皮光纤光栅应变传递特性。针对柔性复合蒙皮材料结构特征，建立了“光纤光栅—粘贴层—蒙皮结构”三层应变传递模型，推导出应变传递变化函数，通过解析方法和有限元方法对光纤光栅传感器各点应变传递率进行了计算，并分析了粘贴层及蒙皮结构相关参数对应变传递率的影响，得出表面粘贴式光纤光栅传感结构最佳封装参数。研究结果表明，对于传感器中部的应变传递效率，解析和数值方法计算误差小于5%，当粘贴层弹性模量为0.5 GPa、粘贴长度为40 mm、粘贴宽度为6 mm、上下粘贴层厚度分别为0.2 mm和0.1 mm时，光纤光栅应变传递模型封装参数优化后的应变传递率可达97.04%，可满足浮空器气囊形变监测的灵敏度要求。
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| 关 键 词： | 浮空器 柔性复合蒙皮 光纤光栅 表贴式传感器 应变测量 应变传递 |
| 收稿时间： | 2020-12-13 |
Strain transfer characteristics of fiber Bragg grating sensor in aerostat flexible composite skin deformation |
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| Affiliation: | 1.Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, China2.Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science & Technology University, Beijing 100016, China |
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| Abstract: | In order to improve the strain transfer efficiency of the fiber Bragg grating (FBG) sensor for the deformation monitoring of the aerostat airbag skin, the strain transfer characteristics of FBG for the flexible composite skin monitoring were studied. According to the structural characteristics of the flexible composite skin material, a three-layer strain transfer model of "FBG-adhesive layer-skin structure" was established and the strain transfer function was deduced. The strain transfer at each point of the FBG sensor was carried out by analytical and finite element methods. The influence of the relevant parameters of adhesive layer and skin structure on the transmission rate was analyzed and the best packaging parameters of the surface bonded FBG sensing structure were obtained. The research results show that the calculation error of the analytical and numerical methods is less than 5% for the strain transfer efficiency in the middle of the sensor. When the elastic modulus of the adhesive layer is 0.5 GPa, the adhesive length is 40 mm, the adhesive width is 6 mm, and the thickness of the upper and lower adhesive layers are 0.2 mm and 0.1 mm respectively, the strain transfer rate of the fiber grating strain transfer model after packaging parameters optimization can reach 97.04%. It can meet the sensitivity requirements of aerostat airbag deformation monitoring. |
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