What is a resistance strain gauge? Connection of Resistance Strain Gauge in Electric Bridge 3

1. Half bridge connection method: Strain gauges are used on the two opposite arms of the bridge, with one gauge measuring tensile strain and the other measuring compressive strain, and the remaining two arms using fixed resistors.diode

2. Full bridge method: All four arms of the bridge are equipped with strain gauges, with two measuring tensile strain and two measuring compressive strain, in order to obtain the maximum output signal and the best temperature compensation effect.

3. Quarter bridge method: One arm of the bridge uses strain gauges, while the other three arms use fixed resistors. This configuration is sensitive to temperature changes and usually requires additional temperature compensation circuits.diode

Resistance strain gauges are widely used in mechanical testing, weighing systems, pressure sensors, bridge monitoring, aerospace and other fields. By accurately measuring strain, engineers and researchers can ensure the integrity of structures, predict and prevent potential failures, and optimize designs to improve performance and safety.diode