Magnetic Particle Testing
Magnetic particle testing detects surface and near-surface discontinuities in ferromagnetic materials.
What this term means in maintenance
Magnetic particle testing detects surface and near-surface discontinuities in ferromagnetic materials.
Common applications
The method may inspect:
- Welds
- Shafts
- Gears
- Hooks
- Forgings
- Pressure components
- Structural parts
Practical example
A steel shaft is magnetized and inspected for cracks around a keyway.
How it works
The component is magnetized, and particles gather where magnetic flux leaks around a discontinuity.
Material limitation
The method applies only to suitable ferromagnetic materials.
Common mistake
Using magnetic particle testing on non-ferromagnetic materials such as many stainless steels or aluminium is ineffective.
How this term differs
Magnetic Particle Testing is surface and near-surface testing for ferromagnetic materials. It is related to Eddy Current Testing, Liquid Penetrant Testing, and Nondestructive Testing, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Nondestructive Testing
Nondestructive Testing, or NDT, examines materials, components, and structures for defects without damaging their intended usefulness.
Liquid Penetrant Testing
Liquid penetrant testing detects surface-breaking defects in nonporous materials using a visible or fluorescent penetrant.
Rotating Equipment
Rotating equipment is machinery containing components that rotate to transfer energy, move material, or perform mechanical work.
Glossary FAQs
- What materials can magnetic particle testing inspect?
Suitable ferromagnetic materials such as many carbon and alloy steels.
- What defects can it find?
Surface and near-surface discontinuities.
- Can it inspect aluminium?
No. Aluminium is not ferromagnetic.