Innovative Technique For Measuring Near-Surface Residual Stress
TrueSlot® is a residual stress measurement technique for generating a profile of residual stress versus depth from the material surface. The stress computation is similar to the Slitting Method but offers more sensitivity near the surface due to the proximity of the strain gage.
Additionally, TrueSlot® is globally less invasive than Slitting because the volume of removed material is localized to the surface and does not typically extend through most of the specimen thickness.
TrueSlot® is Useful For
- Production quality control applications
- Applications requiring in-field measurements with portable equipment
- Near-surface residual stress determination
- Parts with large or complex geometry
- Applications with challenging measurement access
- Applications requiring rapid turn time
External Materials
A model of a completed TrueSlot® method measurement.
Results from the method repeatability study which found TrueSlot® to be a more repeatable measurement method than X-ray diffraction.