EN 12543-4:1999 Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing - Part 4: Edge method
This European Standard specifies the checking of focal spot dimensions above 0,5 mm of X-ray systems up toand including 500 kV tube voltage, by means of radiographs of sharp edges.The image quality andThe resolution of X-ray images depend highly onThe characteristics of the focal spot.Theimaging qualities of a focal spot are based onThe two dimensional intensity distribution inThe object plane.The edge method is especially useful forThe checking of focal spots under field conditions in order to findchanges of the focal spot. It cannot be used for an absolute measurement of the focal spot. For absolutemeasurementsThe method according to annex A is applied.
EN 12543-4:1999 history
1999EN 12543-4:1999 Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing - Part 4: Edge method