Resistance strain gauges measuring method widely used in engineering and scientific experiments. Resistance strain measurement method using resistance strain gauge strain into electrical parameters for testing. When testing the resistance strain gauge pasted or mounted on the surface of the object, and then access the measuring circuit, with the stress and deformation components, resulting in a surface generating member should become resistance change ratio by indicating instrument indication or recording equipment or record the output of strain gauge measurement circuit resistance change.
1, strain variation in resistance strain gauges on the specimen can be converted to a resistance change of the sensor element, the resistance strain effect based on the principle of converting the metal resistance wire.
2, the output signal of the strain gauge bridge for amplifying the high-gain amplifier. Strain gauges also has an impedance conversion function.
3, a small non-linear change in resistance with a linear relationship should become.
4, small gage size, light weight, small inertia, good dynamic characteristics, frequency response is good; attached to the specimen of their working conditions and stress distribution is substantially no effect.
5, suitable for measuring static and dynamic measurements being.
6, high sensitivity and precision strain measurement, dynamic measurement accuracy of up to 1%, still 0.1%.
7, measurement range, deformation of the range of 1% to 2%.
Need to understand the resistance strain measurement techniques and instruments, please contact Shanghai Automation Instrumentation Co., Ltd.
