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首页> 外文期刊>Sensor Letters: A Journal Dedicated to all Aspects of Sensors in Science, Engineering, and Medicine >An Investigation of Optical-Mechanical Transfer of Surface-Bonded Fiber Bragg Grating Sensors for Aerostat Envelope Strain Monitoring
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An Investigation of Optical-Mechanical Transfer of Surface-Bonded Fiber Bragg Grating Sensors for Aerostat Envelope Strain Monitoring

机译：用于气动浮标包络应变监测的表面结合光纤布拉格光栅传感器的光机械传递研究

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摘要

Fiber Bragg grating (FBG)-based aerostat envelope strain monitoring is a new concept in structural health monitoring (SHM), which provides a prerequisite to ensure secure operation of aerostat inflatable systems. A key technology is the establishment of optical-mechanical transfer equation of surface-bonded FBG sensors. In this paper, based on previous surface-bonded FBG models in existing researches, an improved bonding approach for surface-bonded FBGs is proposed for aerostat envelop strain monitoring, and an optical-mechanical transfer equation is derived through strain transfer analysis of the proposed model. Then, a comparison of strain transfer rate distribution along the fiber of the improved model and previous work are conducted, and parameters of adhesive layer that influence strain transfer rate from aerostat envelope to optical fiber are analyzed. Finally, a numerical simulation is carried out to validate theoretical predictions. Finite element method (FEM) results confirm the reliability of proposed theoretical equations. The study of optical-mechanical transfer of surface-bonded FBGs offers a theoretical foundation for corresponding standardized design and precision analysis.
机译：基于光纤布拉格光栅（FBG）的浮空器包络应变监测是结构健康监测（SHM）中的新概念，它为确保浮空器充气系统的安全运行提供了先决条件。关键技术是建立表面键合FBG传感器的光机械传递方程。在现有研究的基础上，结合现有的表面粘结FBG模型，提出了一种改进的表面粘结FBG粘结方法，用于浮空器包络应变监测，并通过该模型的应变传递分析推导了光机械传递方程。 。然后，比较了改进模型和先前工作沿光纤的应变传递速率分布，并分析了影响从浮空器外壳到光纤的应变传递速率的粘合剂层参数。最后，进行了数值模拟以验证理论预测。有限元方法（FEM）的结果证实了所提出的理论方程的可靠性。表面键合的光纤光栅的光-机械传递研究为相应的标准化设计和精度分析提供了理论基础。

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