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Research on Strain Transfer of Surface Fiber Grating Sensor

机译:表面光纤光栅传感器的应变传递研究

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摘要

To accurately monitor the strain of surface of host materials, taking the surface fiber Bragg grating (FBG) sensor as an example, the relationship between the strain measured by the surface FBG sensor and the actual strain of the host material is deduced.The general expression of strain transfer coefficient of the surface FBG sensor is got.In experiment, the copper slice packaged FBG sensor by is adhered to the cylindrical sample surface and its strain transfer coefficient is got.The experimental result proves that the difference between strain transfer coefficients obtained in theory and in experiment is small and the theoretical derivation of the strain transfer coefficient is rational.The research results provide the theory guidance for the FBG sensor packaging and application.
机译:为了准确监测基质材料的表面应变,以表面光纤布拉格光栅(FBG)传感器为例,推导了表面FBG传感器测得的应变与基质材料实际应变之间的关系。实验中,将铜片封装的FBG传感器粘附在圆柱样品表面上,得到其应变传递系数。实验结果证明,在表面上获得的应变传递系数之间存在差异。理论和实验研究较少,应变传递系数的理论推导是合理的。研究成果为FBG传感器的包装和应用提供了理论指导。

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