METHOD FOR AUTOMATED FLAW DETECTION OF WELD JOINT VIA THERMOGRAPHY

摘要

FIELD: physics.;SUBSTANCE: according to the method, a characteristic vector which is a time curve of the detected thermal flux is plotted. Using this characteristic vector, a first characteristic thermal image which corresponds to minimum thermal flux through the sample and a second characteristic thermal image which corresponds to maximum thermal flux through the sample are dynamically determined from a series of thermal images. To localise and assess the weld joint with respect to defects of different types, a suitable thermal image from the series of thermal images is used for each type of defect, wherein characteristic thermal images serve as references for determining the corresponding suitable thermal image.;EFFECT: improved method.;15 cl, 3 dwg