Penetrant Testing- PT

Penetrant Testing (PT) also called liquid penetrate inspection (LPI) is a widely applied inspection method used to check for surface-breaking flaws and defects in both non-ferrous (non-magnetic) materials and ferrous (magnetic) materials.  

The method involves the application of penetrant to a clean test specimen by dipping, spraying, or brushing.  After adequate penetration time has been allowed, the excess penetrant is removed and a developer is applied. The developer helps to draw penetrant out of a flaw so that an invisible indication becomes visible to the inspector.

The Penetrant Testing (PT) method is commonly used in the following industries:

*    Aerospace

*    Aviation

*    Petrochemical

*    Utilities

*    Automotive 

*    Ship Building

*    Railroads 

*    Theme Parks

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