Research Area

Surface Technology

Videoextensiometer RTSS

Examples of use:

  • Determination of material properties in tensile tests
  • Contactless measurement of sample deformation/strain
  • The measured values are used, for example, to calculate force-elongation curves or force-voltage curves to determine the modulus of elasticity and the number of transverse contractions.


Device configuration:

  • Non-contact measurement of longitudinal and lateral strain for material testing in tensile and compression tests
  • Use of the system for flat or round samples with image fields of approx. 10mm to 1m
  • Use of the system with image fields up to 5m for rope testing
  • Measurement of strains from 0.0005% to 1000%
  • The RTSS (Real Time Strain Sensor) can be integrated into the testing machine as a strain sensor via various interfaces and thus operates fully automatically.
  • Offline evaluation modules are available for the determination of surface strain and crack lengths (e.g. for fatigue tests).

Overview of the Devices


Limess Messtechnik und Software GmbH


Videoextensiometer RTSS


Dr. Tina Toelke

Surface Technology
Team Leader
Chemical Technologies

Phone: +49 3641 282554