Dye Penetrant Inspection
Can be used on both ferromagnetic and non-magnetic materials but only for defects open to the surface.This method requires thorough cleaning before inspection.
Dye Penetrant inspection can be used for
Inspection of welds in all material thickness
Lamination check of weld bevels before welding
Inspection of various structures
Inspection of shafts and pins
Inspection of castings for surface defects
Leak test