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相关概念视频

Measurements of Strain01:27

Measurements of Strain

789
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
789

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增强灵敏度的应变传感器基于一个模拟形状的多模式光纤传感器.

Zhiyuan Zhao, Xinruo Li, Shihao Yan

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    概括
    此摘要是机器生成的。

    研究人员开发了一种新的应变传感器,使用模拟形状的多模纤维 (MMF). 这种新设计显著提高了应变灵敏度,为精确的应变测量提供了比传统光纤传感器提高33倍的性能.

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    科学领域:

    • 光纤传感传感器是指光纤传感器.
    • 光子学 是一个光子学.
    • 材料科学 材料科学 材料科学

    背景情况:

    • 传统的单模多模单模 (SMS) 纤维结构使用同质的多模纤维 (MMF) 截面.
    • 现有的SMS光纤传感器具有有限的应变灵敏度,限制了它们在高精度测量中的应用.
    • 圆柱形MMF中的机械应变可能是传感器性能的一个限制因素.

    研究的目的:

    • 为了演示一个增强灵敏度的应变传感器,使用一个模拟形状的多模光纤 (MMF).
    • 研究形状调制对SMS纤维结构的机械应变和灵敏性的影响.
    • 与传统的圆柱形MMF型传感器相比,实现显著提高应变灵敏度.

    主要方法:

    • 制造了一种新的SMS纤维结构,其中包含一个模拟形状的MMF部分.
    • 形状调制是通过多个货币货币基金段的横向偏移拼接来实现的.
    • 进行模拟和实验分析,以评估机械应变和应变灵敏度.

    主要成果:

    • 模拟结果表明,模拟形状的MMF表现出比圆柱形MMF更高的峰值机械应变.
    • 实验结果显示,模拟形状的MMF SMS传感器的应变灵敏度为-55.63 pm/με.
    • 这种灵敏度比传统的圆柱形MMF SMS传感器的 -1.65 pm/με灵敏度提高了33倍.

    结论:

    • 模拟形状的MMF SMS光纤传感器可以显著提高应变灵敏度.
    • 拟议的传感器设计具有成本效益,适用于精确的应变测量应用.
    • 这项技术有可能在结构健康监测和其他精确传感领域取得进展.