ISO 3452:1984

Non-destructive testing — Penetrant inspection — General principles

Applies to penetrant inspection on materials and components both during manufacture and in service. Does not deal with levels of acceptance or rejection. Penetrant inspection is used to locate laps, folds, cracks, porosity and fissures, which are open to the surface of a material or component. It can be used with materials irrespective of their physical properties.