A strain gauge also spelled strain gage is a device used to measure strain on an object.
A strain gauge material should have low.
Backing carrier materials are needed because strain gage wires are very fragile and difficult to handle.
Strain gauge load cells are the kind most often found in industrial settings.
Question is for better results a strain gauge should have low options are a resistance value b gauge factor c resistance temperature co efficient d all of the above e leave your comments or download question paper.
The operation of the glue should isolate the wires from the material being tested.
A strain gauge fig.
This category is just an extension of previously defined bonded metal wire gauge.
Bonded metal foil strain gauge.
Strain gauge load cell.
Measuring strain gauge circuits in order to measure strain with a bonded resistance strain gauge it must be connected to an electric circuit that is capable of measuring the minute changes in resistance corresponding to strain.
Strain gauge transducers usually employ four strain gauge elements that are electrically connected to form a wheatstone bridge circuit.
A strain gauge material should have low a.
Structurally a load cell has a metal body to which strain gauges have been secured.
Its thickness should not exceed 10 micrometers.
The backing is usually made of a dielectric usually plastic which provides a good electrical insulation between the wires of the strain gage and the specimen.
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.
Strain gauges must have a good frequency response.
These metal foil strain gauge uses similar materials to wire strain gauges.
Simmons and arthur c.
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.
7 13 a the gage factor under tension is 3 5 at low strains and increases as the strain increases due to damage wang and chung 1997.
Ruge in 1938 the most common type of strain gauge consists of an insulating flexible backing which supports a metallic foil pattern.
The glue used should be specially prepared for use in the strain gauge.
Invented by edward e.
The linearity should be maintained within accuracy limits.
The gauge is attached to the object by a suitable adhesive such as cyanoacrylate.
It is ideal as it is highly accurate versatile and cost effective.
Based on curve b in fig.
