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) 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.

Course Timeline:
Introduction To Liquid Penetrant Testing
Applications Of Liquid Penetrant Testing
History Of Liquid Penetrant Testing
Visual Activity
Solvents Used In Liquid Penetrant Testing
Characteristics Of Good Penetrant
Light Properties Of Liquid Penetrant Testing
Basic Physics Of Liquid Penetrant Testing
Basic Physics Of Liquid Penetrant Testing Part 2
Lightining Conditions Of Liquid Penetrant Testing
General Procedure Of Liquid Penetrant Testing
Pre Cleaning
Applications Of Penetrant
Drying
Removal Of Excess Penetrant
Applications Of Developer
Interpretation
Weld Defects
Reporting And Post Cleaning
Liquid Penetrant Flow Charts
Quality Check Of Liquid Penetrant Testing
Safety And Maintenance Of Liquid Penetrant Testing

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