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Internal residual stress measurement on plates, train wheels, and thick structures using proprietary sensors and scanners. The technique uses two orthogonal linearly polarized Shear Horizontal waves at 0 and 90 degrees to provide a birefringence measurement which is directly correlated with internal stress.


  • Non-contact EMAT ultrasonic stress measurement technique.
  • Custom software with residual stress measurement in MPa or psi.
  • Built-in reports with residual stress measurement, graphs, snapshots, and other data.
  • Portable probe scanner for semi-automated residual stress measurement on train wheels.
  • Rotating probe scanner for semi-automated residual stress measurement on plates.
  • Meets EN 13262:2011 and German Standard VPI 09. Tested and endorsed by European OEMs for the railway industry.

Software Upgrades

  • Stress Measurement

Check these papers to know more about our solutions for railroad:

See our case study: Rail wheels periodic maintenance inspections with Innerspec’s residual stress measurement solution.

Related Instruments

The following instruments are recommended for this application.


Standard EMAT and DCUT Sensors and Accessories for the most common applications (normal beam, guided waves, angled beam)

If you would like any more information on this system, please contact us, and one of our experts will be in touch.