Direct assessment of strain through coatings, without bonding to the surface


  • Efficient: Reusable probe
  • Non-destructive testing: minimal surface preparation, only requires removal of loose corrosion products
  • Versatile: Can be used indoors, outdoors and underwater
  • Ease of use: Convenient static placement of the probe
  • Customized solution: Configured for individual applications and specific customer requirements


StressProbe™ is an electromagnetic method designed to measure strain in ferromagnetic metals, where when they come under load, there are minute changes in permeability in the direction of the strain, compared with that orthogonal to it. StressProbe was developed to detect and measure these subtle changes to provide a direct value of strain. Unlike conventional strain gauges, StressProbe does not require contact with the surface and can be used through non-metallic coatings up to a thickness of 5 mm (0.2 in). The main application for StressProbe is measuring dynamic strain, but also strain distribution under certain conditions.


  • Dynamic load measurement: Mooring chains, offshore structures, bridges and masts
  • Mapping of strain distribution in civil engineering applications such as bridges and I-beam constructions
  • Structural monitoring of subsea structures