Penetrant testing PT

  • The method is based on the phenomenon of capillary hair.
  • It enables the detection and location of discontinuities in the tested material (such as: cracks, delamination, rolling, and non-welds).
  • The method used during acceptance, production, inspection or maintenance. They are carried out for the entire surface or only locally.
  • This method is not used to test porous materials.

Penetration tests allow for the detection of surface defects of materials such as: cracks, delamination, rolling, and welds. This method is based on the capillary phenomenon, i.e. the penetration of the liquid into narrow and hard-to-reach areas and filling them. The penetrants used are designed to penetrate the surface holes. After the appropriate time has elapsed, the excess penetrant is removed from the surface, remaining only in the holes. Thanks to the use of appropriate fluorescent developers and additives, it is possible to detect and locate the current discontinuities. Penetration testing is used during acceptance, production, inspection or maintenance. They are carried out for the entire surface or only locally. This method is not used to test porous materials.

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