Magnetic Particle Inspection
Dry Magnetic Particle Inspection
- The part is magnetized.
- Finely milled iron particles coated with a dye pigment are then applied to the specimen.
- These particles are attracted to magnetic flux leakage fields and will cluster to form an indication directly over the discontinuity.
- This indication can be visually detected under proper lighting conditions
Wet Magnetic Particle Inspection
- The part is magnetized
- Fine iron particles coated with a fluorescent dye are suspended in a liquid which is flowed over the magnetized part.
- These particles are attracted to magnetic flux leakage fields and will cluster to form an indication directly over the discontinuity.
- A blacklight is required to illuminate the indication.
