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Aries Marine and Engineering Services

Dye Penetrant Test (DPI)

Dye Penetrant Test (DPI)

Dye Penetrant Test (DPI) conjointly known as Liquid Penetrant Inspection (LPI) or Penetrant Inspection (PT). This can be a quick, economical and wide used non-destructive check technique in gas and industry. It’s in the main wont to notice surface-breaking discontinuities all told non-porous materials like metals, plastics, or ceramics.

Aries Marine & Engineering Service is concerned in providing qualitative Dry Penetrant Inspection Service to our prestigious client in oil and gas industries. We tend to square measure assisted by a team of expert professionals and technicians who are closely act with our clients and render this service as per the elaborate specifications of the clients.

Commonly, Dye Penetrant Test (DPI) is used to detect cracks, surface porosity, lack of penetration in welds and defects resulting from in-service conditions like fatigue cracks of components or welds in castings, forgings, and welding surface defects.

Basic Steps of Dye Penetrant Test (DPI)

  • Surface Preparation
  • Penetrant Application
  • Penetrant Dwell
  • Excess Penetrant Removal
  • Developer Application
  • Indication Development
  • Inspection
  • Clean Surface

Principle of Dye Penetrant Test (DPI)

Dye Penetrant is drawn into the surface-breaking crack by capillary action and excess surface penetrant is then removed; a dry powder is then applied to the surface, to draw out the penetrant in the crack and produce a surface indication. The indications produced are much broader than the actual flaw and are therefore more easily visible.

Advantages of Dye Penetrant Test (DPI)

  • Sensitive to small surface discontinuities
  • Works on metallic, non-metallic, magnetic, non-magnetic, conductive, and non-conductive materials
  • Works on complex geometric shapes
  • Visual, real-world results
  • Dye Penetrant Inspection materials are very portable
  • Dye Penetrant Inspection materials are individually very affordable