White Papers


White Papers


Simon Löhe
Metallographer, group leader of Laboratory-Services Munich
Expert in failure analysis and metallography
+49 8106 9941 17

Dye penetrant testing

With the penetration procedure cracks, lacks of fusion, overlaps and pores, which are open to the surface, are indicated. It is used for example for steel, aluminum, copper, fired ceramics, forgings, castings, welded joints and other components with a relatively smooth surface.

Depending on the requirements and environmental conditions different penetration procedures are available.

A low viscosity penetrant is absorbed by capillary forces in cracks. With a developer the defects are then made visible.

[Translate to English:] Fluoreszierend
[Translate to English:] Rot-Weiss Kontrast

Society for Materials Testing
Ensuring quality | Accompanying development | Analyzing damage | Passing on knowledge

GWP Gesellschaft für Werkstoffprüfung mbH
Georg-Wimmer-Ring 25
85604 Zorneding/München

Tel. +49 8106 994110
Fax +49 8106 994111

Handelsregister München
HRB 53245
USt.-IdNr. DE131179893

General Manager
Dr. Julius Nickl