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一、前言在结构构件和机械部件的各种静、动态强度试验及实验应力分析中,电阻应变测量技术具有重要地位并得到广泛的应用。电阻应变计是电阻应变测量中的关键元件,它除应用于一般的强度试验与实验应力分析外,还可制成力、压力、位移、扭矩、速度、加速度等各种传感器,在冶金、化工、机械、交通运输、商业等部门作非电量测量,信号控制和秤量之用。电阻应变计的质量好坏直接关系到各种应力应变测量及各种传感器的精确度和可靠性。评定电阻应变计质量优劣的技术指标(即工作特性)为数不少,其测定方法更多。本文仅就
I. Preface In the various static and dynamic strength tests of structural components and mechanical components and experimental stress analysis, resistance and strain measurement technology has an important position and has been widely used. Resistance strain gauge is a key component in the measurement of resistance and strain. Besides being used in general strength test and experimental stress analysis, resistance strain gage can be made into various sensors such as force, pressure, displacement, torque, speed and acceleration. , Machinery, transportation, commerce and other departments for non-power measurement, signal control and weighing purposes. Resistance strain gauge quality is directly related to a variety of stress and strain measurements and a variety of sensor accuracy and reliability. The quality of the resistance strain gage to assess the technical indicators (ie, the characteristics of the work) a large number, the determination of more. This article just