| 安装于低模量基体的光纤光栅传感器应变传递分析 |
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| 引用本文： | 吴入军.安装于低模量基体的光纤光栅传感器应变传递分析[J].传感技术学报,2016,29(6). |
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| 作者姓名： | 吴入军 |
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| 作者单位： | 上海电机学院 机械工程学院 |
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| 基金项目： | 大型旋转机械安全服役关键技术研究 |
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| 摘 要： | FBG传感器广泛应用于基体结构的应变测量，由于FBG传感器的存在改变了基体的应变分布，光纤与基体并非直接接触，导致测量应变产生一定的损失。为了提高测量精度，本文建立了一个FBG传感器应变传递理论模型，并利用有限元验证其正确性；最后，利用本文理论对各个参数对应变传递率的影响进行详细分析。
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| 关 键 词： | 传感器 应变传递率 光纤布拉格光栅（FBG） |
Analysis of strain transfer of FBG sensors bonded on low modulus host materials |
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| Abstract: | Fiber Bragg gratings (FBG) sensor has been widely used in measuring the strain of host material. The existing of FBG sensor affects strain distribution of the host material, and the host material does not contact the optical fiber. However, may result in a decrease of strain measurement accuracy. To improve the measurement accuracy, a theoretical model of strain transfer was developed to include the influence of FBG sensor. Subsequently, the theoretical predictions were validated by finite element analysis. Finally, the effect of parameters on strain transfer rate was discussed according to the current theoretical analysis. |
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| Keywords: | Sensors Strain transfer rate Fiber Bragg grating (FBG) |
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