Über die Fehlerauffindbarkeit als Hauptforderung an die zerstörungsfreie Werkstoffprüfung

About the Detection of Imperfections as a Main Task for Nondestructive Testing The inspection uncertainty is identified which is a measure of the difference between the size of imperfection that has a high probability of being passed and the size of imperfection that has a high probability of being rejected by an inspection. Reduction of the inspection uncertainty is the only means by which one can reduce inspection errors as the acceptance of defective material units and the rejection of sound material units. The discussion is presented within a framework that allows a quantitative evaluation of the quality of the material units that pass an inspection and a determin ation of the rejection rate. Analysis of the causes of inspection uncertainty is essential to efficient strategies for improving nondestructive inspection capabilities.