KS B ISO 19232-2:2021 Non-destructive testing — Image quality of radiographs —Part 2: Determination of the image quality value using step/hole-type image quality indicators
2021KS B ISO 19232-2:2021 Non-destructive testing — Image quality of radiographs —Part 2: Determination of the image quality value using step/hole-type image quality indicators
2005KS B ISO 19232-2:2005 Non-destructive testing-Image quality of radiographs-Part 2:Image quality indicators(step/hole type)-Determination of image quality value