Strain Gauge Material

Specialized semiconductor strain gauges based on silicon have gauge factors of 50 to 200 but these devices are nonlinear making them more difficult.

Strain gauge material.

Invented by edward e. Further discussion on sensitivity can be found in the strain gage sensitivity page. Materials used for the strain gauges. 12 is a sensor which responds to the expansion or contraction of a material or the strain a strain gauge consists of a long thin piece of metal which folds back on itself or zig zags across the sensor.

Earlier wire types of strain gauges were used commonly which are now being replaced by the metal foil types of gauges as shown in the figure below. Metal strain gauges have a gauge factor of about 2. A strain gauge fig. As the object is deformed the foil is.

The material construction of the wire directly affects the sensitivity of the strain gage. A strain gauge also spelled strain gage is a device used to measure strain on an object. The metals can be easily cut into the zigzag foils for the formation of the strain gauges. Therefore many specifications are identical for one strain gauge series.

The gauge is attached to the object by a suitable adhesive such as cyanoacrylate. Applications are mainly static or quasi static strains. The sensitivity of metal strain gauges can be 10 6 strain. One of the most popular materials used for the strain gauges is the.

For experimental tests robust and flexible strain gauges which can be used under arduous conditions have distinct advantages. Simmons and arthur c. Select constantan advance copel alloy wire if. As the material expands or contracts the long thin piece of metal gets longer or shorter with the material changing the resistance of the metal.