Macroscopic Examination

Macroscopic Examination is used either independently or in addition to another test method to identify any discontinuities located on the subsurface of the test part. Macroscopic Examination is performed on a transverse section, longitudinal section, or on the through thickness to evaluate the subsurface. This test method is performed at magnifications of 10x or less. Macroscopic Examination is typically performed on many semi-finished samples of a finished project to look for any inclusions, impurities, or grain flow in forgings. Additionally, it can be used on weld cross sections to seek out the weld profile, discontinuities, weld sequence and passes, and the extent of penetration.