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首页> 外文会议>International Conference on Optical Fiber Sensors >Soldering fiber Bragg grating sensors for strain measurement
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Soldering fiber Bragg grating sensors for strain measurement

机译：用于应变测量的焊接纤维布拉格光栅传感器

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When measuring strain with a FBG sensor fixed to a structure by an adhesive, one will notice, that only axial strain is monitored. This is due to the low Young's modulus of both standard coating materials and adhesives. Metal coated fibers with high Young's modulus have become available recently, which may be surface bonded by soldering. Motivated by this, finite element simulations with different coating materials and adhesives were carried out. Increasing the Young's modulus of coating and adhesive in the simulation shows a difference in transverse strain of around 20 % for the two cross sectional fiber axes. On this basis a process to substitute standard fiber coatings with a copper coating is described. Satisfying results were obtained using a copper electroplating process. Especially its simple experimental access is noticeable. A sensor modified in the electroplating process is soldered to a cantilever beam and a quasi-static strain measurement is performed. Soldering the modified fiber sensors changes the spectral response of the FBG. Towards shorter wavelength which is a result of the strains induced by cooling.
机译：当用粘合剂固定到结构的FBG传感器测量应变时，一个将注意到，仅监测轴向应变。这是由于标准涂层材料和粘合剂的低杨氏模量。较年轻模量高的金属涂层纤维最近可用，这可能是通过焊接粘合的表面。由此激励，进行具有不同涂料和粘合剂的有限元模拟。在模拟中增加杨氏涂层模量和粘合剂显示出两个横截面纤维轴的横向菌株约为20％的横向菌株。在此基础上，描述了用铜涂层替代标准纤维涂层的方法。使用铜电镀工艺获得满足结果。特别是其简单的实验访问是明显的。在电镀过程中修改的传感器焊接到悬臂梁，并进行准静态应变测量。焊接改性光纤传感器改变了FBG的光谱响应。朝向更短的波长，这是通过冷却引起的菌株的结果。

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