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Liquid Penetrant Testing

Liquid Penetrant Testing

Engineering Service - Engineering and Prototyping Services

Service Description

Liquid Penetrant Testing (PT), also called liquid penetrate inspection (LPI) or Dye penetrant inspection (DP), 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.

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