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laser extensometer for material testing machines
SWS 300 Laser extensometer on a universal testing machine of the type inspekt

Optical extensometers - Laser extensometer

Deformation measurement with the laser extensometer

The non-contact linear expansion measurement allows the automatic determination of the initial gauge length (L0). The optical system does not influence the measurement with knife edges or its own weight. Laser and video extensometers are used. 

The laser extensometer is used for non-contact measurement of strain or compression of test specimens under uniaxial load. Two measuring marks are applied to the sample before the test. The laser extensometer scans the measuring range with a visible laser beam and automatically determines the reference length. The positions of the measuring marks are recorded throughout the test. The software calculates the length change and elongation from the temporal progression.

Product information laser extensometer SWS-300

Product information laser extensometer P-50 / P-100

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