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Description
The Strain Gage SG-01 is the fibre optic equivalent of an electrical strain gage. It consist of a fibre containing an FBG that can be mounted directly on the surface of a structure by means of an adhesive. In this way, the fibre sensor makes direct contact with the surface and therefore measures directly the strain at the surface. Installation of the optical strain gage happens preferably by means of the FOS&S Strain Gage Installation Kit (SGK-01).
Features
- Buffered fibre sensor with a free fibre length around the FBG for direct fixation of the sensor to various surfaces.
- High strength FBG, implying high strain levels and excellent fatigue resistance.
- Fibre coating does not have to be removed before fixation because of its high Young modulus and excellent bonding properties to the fibre cladding.
- The gage factor is detemined with high accuracy.
Applications
The fibre optic Strain Gage SG-01 can be applied to measure strain changes (due to tension, compression and bending) of metallic of composite structures. In this way, it allows one to deduce the stresses which act upon the structure that is being monitored. In combination with high speed interrogators, also vibrational analysis can be preformed.