Experts in Dye Penetrant Inspection

Dye Penetrant Inspection (DPI) is a NDT process used to detect surface breaking defects in all non-porous materials e.g. metal, plastics and ceramics.

DPI is a very cost effective method of inspecting castings, forgings and weldments, highly successful in detecting hairline cracks, surface porosity, leaks in new products, and fatigue cracks on in-service components. Expedient use includes steel fabrication, renewable energy, aerospace, power generation, transportation and in the gas and oil sectors.

Also known as Liquid Penetrant Inspection (LPI), DPI is most effective for non-ferrous metals. For ferrous metals IACS’s Magnetic Particle Inspection is recommended, see here for our comprehensive MPI services.

Accuracy where you need it

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DPI Removing Dye.

Our experts report to you, instantly

All IACS Dye Penetrant Inspections are fully risk assessed and undertaken by CSWIP and PCN Level 2 qualified personnel to client pre-approved specifications and the most recent British / International standards.

  • DPI of Part.

    DPI of Part

  • DPI of Weld.

    DPI of Weld

  • DPI Applying Dye.

    DPI Applying Dye

Swift testing across the widest range of materials, components and environments

Advantages of IACS Dye Penetrant Inspections include:

  • Rapid inspection of large areas and volumes
  • High sensitivity to small surface and sub-surface interruptions and discontinuities
  • Effective detecting on complicated geometric shapes and components
  • Suitable for wide range of plastics, ceramics and metals, including magnetic/non-magnetic, conductive and non-conductive materials
  • Compact, highly portable and suited to a wide range of environments
  • Low-cost materials and equipment
  • Produces direct surface indications, giving immediate visual flaw representation
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