Automatic fuze radiograph inspection device

An electro-optical scanner (AFRID) was built and tested to inspect X-radiographs of grenade fuzes. Presently, all fuzes are inspected by visual examination of the radiographs. High volume production imposes high loads on human inspectors for whom special controls and procedures are needed to reduce the effects of fatigue and hypnosis. The AFRID accepts the format in current inspection use. Each manually loaded 11 in. × 14 in. radiograph contains 100 fuze X-ray images in a 10 × 10 rectangular array. The machine automatically acquires and examines each image. It decides whether each fuze is to be accepted or rejected according to specified criteria. Indicator lamps and audible alarms indicate operational status, and a typewriter and film markers provide bookkeeping.