The radiographic inspection is a non-destructive x-ray method for detecting internal physical defects in small component parts which are not otherwise visible. Radiographic techniques are intended to reveal such flaws as improper positioning of elements, voids in encapsulating or potting compounds, inhomogeneities in materials, presence of foreign materials, broken elements, etc.
Radiographic inspection testing is specified in the following:
MIL-STD-202, MIL-STD-750, MIL-T-16420