What is DP or Dye Penetrant Inspection?

  • What is DP or Dye Penetrant Inspection?

    Posted by Doug on 31/10/2020 at 3:42 am

    From Wiki

    Dye penetrant inspection (DP), also called liquid penetrate inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials (metals, plastics, or ceramics). The penetrant may be applied to all non-ferrous materials and ferrous materials, although for ferrous components magnetic-particle inspection is often used instead for its subsurface detection capability. LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products, and fatigue cracks on in-service components.

    Doug replied 1 year, 9 months ago 1 Member · 0 Replies
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