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基于雷利的光学频域反射计的纤维参数的Young的模块独立确定从低温温度到353K的低温温度

Caroline Girmen¹, Clemens Dittmar², Thorsten Siedenburg²

¹Department Production Metrology, Fraunhofer Institute for Production Technology IPT, Steinbachstraße 17, 52074 Aachen, Germany.

Sensors (Basel, Switzerland)

|July 11, 2023

概括

分布式光纤传感器 (DOFS) 经过对极端空间条件进行校准. 这项研究确定了取决于纤维的温度和拉伸系数,使得可以准确地监测空间中的超导线圈等结构.

科学领域:

太空物理和仪器仪表
材料科学和传感器技术
探测宇宙射线和反物质的方法

背景情况:

阿尔法磁谱仪 (AMS-100) 需要在极端空间环境中对其超导线圈进行强大的传感.
监测结构变化,如线圈火,对于任务的成功至关重要.
基于雷利散射的分布式光纤传感器 (DOFS) 适用于这些条件,但需要精确的校准.

研究的目的:

为了精确校准DOFS的纤维依赖温度 (KT) 和应变 (Kε) 系数.
为了研究这些系数在广泛的温度范围内 (77 K到353 K).
为了在极端环境中准确地确定结构的应变和温度.

主要方法:

将光纤集成到一个带有校准张力计的拉力试验样本中.
确定纤维的拉伸系数 (Kε) 独立于它的扬斯模量.
使用模拟来验证样和光纤之间的应变转移.
研究温度和应变系数 (KT,Kε) 从77K到353K.

主要成果:

应变系数 (Kε) 呈现出对温度的线性依赖.
温度系数 (KT) 显示对温度的非线性依赖.
验证了DOFS在测试范围内的应变和温度监测的准确性.

结论:

该研究提供了DOFS在太空等极端环境中使用的基本校准参数.
精确的压力和温度的结构的确定是可以通过使用的DOFS系数实现的.
允许加强对敏感设备的结构健康监测,例如超导线圈.

关键词:

在 AMS-100 中,使用的是 AMS-100 系统.在OFDR中,OFDR是OFDR.校准校准的时间低温温度是冷的温度.光纤传感器是一种光纤传感器.压力压力压力压力

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