Dye dye penetrant Inspection, also known as Penetration Testing (PT), Liquid dye penetrant Inspection (LPI) or Fluorescent dye penetrant Inspection (FPI), Liquid dye penetrant is applied to the surface and left to soak, being drawn into any cracks by capillary action.

Dye Penetrate Inspection, also known as Penetration Testing (PT), Liquid Penetration Inspection (LPI) or Fluorescent Penetration Inspection (FPI), Liquid penetrate is applied to the surface and left to soak, being drawn into any cracks by capillary action.

The excess penetrant is then removed and a developer applied to draw out the entrant from cracks, to enable a visual inspection of any defects. Accurate interpretation is achieved by our seasoned NDT qualified Penetrant Testing Inspectors, Dye Penetrant Inspection can be used on almost any non-porous material.

The types of defects that can be found with penetrant testing are:

Rolled Products: Penetrant identifies anomalies (cracks, seams or laminations)

Castings: cold shuts, hot tears, porosity, blowholes, or shrinkage.

Forgings: Illuminating cracks, laps, or external bursts.

Welds: To identify cracks, porosity, undercut, overlap, lack of fusion, or lack of penetration.