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电阻应变仪主要用于对材料、构件和模型等物体在静、动态荷载作用下进行应力与应变测试和分析处理。它具有使用方便、灵敏度高、稳定性好、测点多并可作远距离测量等优点,因此,已在许多领域得到应用。电阻应变仪按其可测应变频率范围的高低,一般分为静态、动态和超动态三种,其中静态电阻应变仪使用较为普遍。本文主要以该应变仪为例,说明应变仪的工作原理、基本结构及使用方法,这对如何用好电
Resistance strain gauges are mainly used to perform stress and strain testing and analysis on materials, components, and models under static and dynamic loads. It has the advantages of convenient use, high sensitivity, good stability, multiple measuring points and long-distance measurement. Therefore, it has been applied in many fields. Resistance strain gauges can be divided into static, dynamic and super dynamic according to the range of their measurable strain frequency, and static resistance strain gauges are more commonly used. This article mainly uses the strain gauge as an example to illustrate the working principle, basic structure and usage of the strain gauge. This is how to use good electricity.