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相关概念视频

Measurements of Strain01:27

Measurements of Strain

747
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...
747

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Micro/Nano-scale Strain Distribution Measurement from Sampling Moir&#233; Fringes
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格 (Moiré) 微干扰度移位/变种传感器与极化相位移位.

Leszek Sałbut1, Dariusz Łukaszewski1, Aleksandra Piekarska1

  • 1Warsaw University of Technology, 00-661 Warsaw, Poland.

Sensors (Basel, Switzerland)
|May 11, 2024
PubMed
概括

这项研究修改了一种波导干扰仪用于网格干扰测量,通过极化边缘相位移动实现自动边缘模式分析,以精确地测量平面内移位和应变.

科学领域:

  • 光学和光子学 在光学和光子学.
  • 机械工程 机械工程
  • 材料科学 材料科学 材料科学

背景情况:

  • 格 (moiré) 干扰计是全场内平面位移和应变测量的关键技术.
  • 传统的波导干扰仪头在自动边缘图案分析方面存在局限性.

研究的目的:

  • 提出和验证用于格子干涉测量的修改波导干涉计头.
  • 为了实现使用偏振边缘相位移的自动边缘图案分析.
  • 用修改的头来展示飞机内移位/应变传感.

主要方法:

  • 修改波导干扰仪头部的理论分析.
  • 用于边缘分析的极化边缘相位转移的实施.
  • 对拟议的干扰仪设计进行实验验证.
  • 飞机内移位/应变传感的概念演示.

主要成果:

  • 成功修改了传统的波导干扰仪头部.
  • 用于自动分析的极化边缘相位转移的演示.
  • 理论考虑的实验验证.
  • 飞机内移位/应变传感的概念验证.
关键词:
移位测量方法 移位测量方法网格式 (moiré) 干扰测量仪极化边缘的相位转移阶段变化波导传感器的波导传感器.

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结论:

  • 拟议的修改通过实现自动边缘模式分析来增强格子干扰测量.
  • 修改后的波导干扰仪头对于精确的平面内位移和应变测量是有效的.
  • 这一进步为光学计量学提供了更有效的方法.