METHOD AND APPARATUS FOR INSPECTING QUALITY OF WELDING USING SENSORS AND IMAGES

Abstract: proposed are a method and an apparatus for inspecting weld quality using sensors and images. the method includes receiving a dataset consisting of sensor values from a sensor module that is installed in a welding device and measures at least one of voltage, current, and gas flow rate, determining defectiveness according to a number of sensor values smaller than a lower limit value based on the lower limit value calculated from an average of the sensor values included in the dataset, receiving, when the defectiveness is determined, an image of a weld bead corresponding to the dataset, detecting a region of interest corresponding to a weld bead in the image, calculating dimensions of horizontal and vertical lengths of the region of interest, and determining defectiveness depending on whether the dimensions of horizontal and vertical lengths of the region of interest exceed preset thresholds for the horizontal and vertical lengths.

Inventor(s): Jong Nam KIM, Jae Eun LEE

CPC Classification: B23K31/125 (SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM (making metal-coated products by extruding metal ; building up linings or coverings by casting ; casting by dipping ; manufacture of composite layers by sintering metal powder ; arrangements on machine tools for copying or controlling ; covering metals or covering materials with metals, not otherwise provided for ; burners ))

Search for rejections for patent application number 20250187120