Microstructural X‐Ray Testing: Some Apparatuses Described, Showing the Applicability of the Method to Aircraft Available to Purchase

FOR a number of years, the X‐ray macro‐structural examination of metals, alloys and other raw materials has been success‐fully applied in many factories for the detection of internal defects, fractures, cracks, blow‐holes, piping, etc. It has recently been possible also to develop microstructural examination to such an extent that besides being used in research laboratories it is now applied to the practical inspection and testing of materials.