How does residual stress measurement using ultrasound work?
In residual stress measurement using ultrasound, W.S. Werkstoff Service measures stress states in components non-destructively. Ultrasonic waves are coupled into the material. Residual stresses affect the propagation velocity of the sound waves, producing measurable changes in transit time. These signals are recorded, evaluated and compared with reference or calibration data. This provides information about tensile or compressive residual stresses. The method is suitable for welds, machined surfaces and components after heat treatment or forming. The results are documented.