- #1
bill nye scienceguy!
- 127
- 0
when talking about strain gauges, what does 'drift' refer to exactly?
Normouse said:Maybe this is the wrong thread but I know exactly what a hovercraft is. How do I get on the correct thread?
Drift in strain gauges refers to the gradual change in the output signal of the gauge over time, even when there is no change in the applied strain. It is a type of measurement error that can affect the accuracy and reliability of strain gauge measurements.
There are several factors that can cause drift in strain gauges, including changes in temperature, aging of materials, and mechanical stress. Additionally, manufacturing defects or improper installation can also contribute to drift.
The best way to correct for drift in strain gauges is to use a compensation method, such as zero balancing or temperature compensation. These methods involve adjusting the gauge or the measurement system to account for the drift and maintain accuracy.
While compensation methods can minimize the effects of drift, it is nearly impossible to completely eliminate it. Some degree of drift is inherent in strain gauge measurements and can be influenced by external factors that are difficult to control.
To prevent or minimize drift in strain gauge measurements, it is important to carefully select and install the gauges, regularly calibrate and maintain the measurement system, and control external factors such as temperature and stress. Following best practices for strain gauge usage can also help reduce the impact of drift on measurements.