This standard specifies the method for measuring the effective focal spot size of industrial x-ray equipment specified in JIS Z 4606 with a nominal focal spot size of 300 μm or more.
JIS Z 4615:2007 Referenced Document
JIS K 7627 Non-destructive testing -- Industrial radiographic films -- Part 1: Classification of film systems for industrial radiography
JIS Z 2300 Terms and definitions of nondestructive testing*, 2020-11-20 Update
JIS Z 4606 Industrial X-ray apparatus for radiographic testing
JIS Z 4916 Test charts for resolution characteristics of X-ray equipment
JIS Z 4615:2007 history
2007JIS Z 4615:2007 Measurement of the effective focal spot size for industrial X-ray apparatus
1993JIS Z 4615:1993 Measurement of the effective focal spot size for industrial X-ray apparatus