Stress Measurement

Stress Measurement with EMAT-small
Stress Measurement with EMAT

Custom and off-the-shelf applications for internal stress measurement on plates, train wheels, and thick structures using portable and integrated solutions. The technique uses two orthogonal linearly polarized Shear Horizontal waves at 0 and 90 degrees to provide a birefringence measurement that is directly correlated with internal stress.

Innerspec’s stress measurement application can be installed on the POWERBOX H providing a completely portable solution that can easily be used in the field and the factory floor.


  • No couplant EMAT technique. Capable of penetrating surface coatings and corrosion.
  • No beam steering errors caused by misalignment of the transducer with the surface.
  • Stress readings in MPa or psi.
  • Built-in reports with stress measurements, graphs, snapshots, and other data.
  • Low-weight POWERBOX H (<3Kgs) instrument option available.
  • Portable probe scanner for semi-automated field stress measurements on train wheels.
  • Meets EN 13262:2011 and German Standard VPI 09. Tested and endorsed by European OEMs for the railway industry.
  • Integrated solution available (TEMATE SM).

Consult Innerspec for details.

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