Our dye penetrant inspection (DP), also called liquid penetrate inspection (LPI) or simply penetrant testing (PT) method is used to check surface-breaking defects in all non-porous materials – it is based on the properties of surface wetting and capillary action, which causes a liquid to rise when confined to a small opening. After applying the penetrant and wiping away the excess, the penetrant that rises to the surface can indicate surface-breaking anomalies.
Our PT services are implemented to identify gaps or disruption, surface flaws, skin irritation, and other anomalies on continuous surfaces of a variety of assets composed of metals, glass, ceramics, composites, plastics and rubber. Our technicians implement PT inspections in the field and in the lab for assets in the oil & gas, aerospace, power generation, infrastructure, and manufacturing industries.
Our PT Applications:
- Rolled Products: Anomalies, such as cracks, seams, or laminations
- Castings: Cold shuts, hot tears, porosity, blowholes, or shrinkage
- Forgings: Cracks, laps, or external bursts
- Welds: Cracks, porosity, undercut, overlap, lack of fusion, or lack of penetration