In a method for the optimization of stress distribution on an object to be tested for flaws by ultrasound excitation and evaluation based on resulting surface temperature distribution,—a simulation is performed under test conditions on a CAD model of the object prior to a testing an object,—vibrational spectra and modal vibrational forms are calculated,—local mechanical stresses are determined from the vibrational modes, whereby—modes to be excited for the real test are selected from the entirety of the occurring modes such that,—the mechanical stress lies in a selected region above a predetermined minimum stress to enable a reliable proof of defect,—the mechanical stress in all other regions of the inspection part, in particular on easily damaged component structures, is smaller than a predetermined maximum stress by a predetermined factor, in order not to damage the component at weak points.