Evaluation of stress states of components using ultrasonic and micro magnetic techniques

The paper describes the measuring and evaluation procedures of both techniques. The state of art is characterized by discussing experimental results of applications on e.g. turbine rotors, gear parts and welded plates and sheets. Comparisons with the results of established techniques show the reliability of the ultrasonic and micromagnetic techniques. The applicability as well as the limitations of the techniques will be commented in detail.