SEDL / STP / STP112-EB / STP46820S

Discontinuities in Cast and Wrought Products that can be Revealed by Non-Destructive Tests

Van Horn, Kent R.
Associate Director of Research, Aluminum Company of America, New Kensington, Pa.

Pages: 19    Published: Jan 1951

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Abstract

The ASTM Tentative Industrial Radiographic Terminology for the Radiographic Inspection of Castings and Weldments (E 52-49 T), is illustrated by prints representing typical discontinuities for each subdivision. The sensitivity limitations and important applications are briefly described for four extensively used non-destructive tests—radiographic, fluorescent penetrant, magnetic particle, and ultrasonic methods. An attempt is made to define the discontinuities in the ASTM Terminology that are likely to be detected in non-ferrous and ferrous castings and welds by these four tests. There is also some discussion of the types of discontinuities that may be revealed in wrought products by these methods.