Abstract: A weld inspection process and an associated system for the determination and assessment of weld seams by first producing a flawless weld seam on a test specimen, making a point by point inspection of the test specimen using a pair of alternately pulsed X-ray or gamma ray sources, while generating signals which may be simultaneously displayed and stored, to form a permanent record of the test specimen weld seam, on a target plate. A point by point comparison of is made of a new, similar weld and the recorded image is instantaneously compared with the previously recorded, stored image of the flawless test weld. In the event of identical images, that point of the weld is deemed flawless, while a lack of identity indicates a flaw, in which event, the defective position is marked for subsequent repair, removal or total rejection.

Abstract: A process for maintaining weld quality during welding operation, marking the fault spots on the workpiece and certifying of quality, in the course of which instantaneous values of arc current and arc voltage characterizing manual or mechanized welding process are continuously measured and from the values thus obtained relative short-circuit time of the arc, drop frequency and arc outputs are continuously calculated.The measured and calculated values are compared with empirically determined optimal values, thus defining absolute values and signals representing the directions of deviations, as well as duration of deviations, are compared on a predetermined span of time and averages of absolute values and signals representing the directions are defined.