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Comparison of the LIMESS measurement systems and their measurements.

The following table compares our measurement systems in terms of the measured variables.
Measured variables that can be derived from this include speed, acceleration, distance and many more,
Q400, LIMtrack and LIMtrack6D can calculate via integrated analysis module (scripting) many other complex measures (Young's-modulus, temperature coefficient of expansion, velocities, etc.).


Base measurement



Spatially resolved

Typical Applications

Position, distance, distance change, strain   Standardised material testing (e.g. tensile test)
Q400 -
Digital Image Correlation
2D/3D coordinate, displacement, strain
and all deriver measures
Material testing, Component testing
Fatigue tests, crack propagation
3D Vibration test and modal analysis
Dynamic tests
3D motion analysis
3D coordinate, 3D displacement
and all derived measures
  3D motion analysis for static and dynamic tests

2D motion analysis

2D displacement & motion
and all derived measures

  2D Motion and vibration analysis
Vibration analysis
Video recording       Vibration tests with Shaker
(Image analysis with LIMtrack)
Surphaser -
3D Scanner
3D coordinate / 3D geometry     Quality control
Reverse Engineering

The RTSS video extensometer measures the strain from the distance change of two markers. The measured strain value is therefore the average (integral) component elongation (strain) between the markers and similar to a mechanical extensometers
With the Q400-DIC system, the integral (locally averaged ) measurement values (extensometer, polygon surfaces, circular surfaces, etc.) are optionally calculated after the spatially resolved analysis.