Magnetic Particle Testing (MPT)
Magnetic Particle Testing (MPT)
Magnetic Particle Testing (MPT) is a non-destructive method to find surface/near-surface flaws (cracks, inclusions) in ferromagnetic parts (steel, iron) by magnetizing them and applying magnetic particles, which clump at defects, revealing them under visible or UV light. Its uses span aerospace, automotive, oil & gas, and power generation for inspecting welds, castings, and forgings, ensuring safety by detecting fatigue cracks, welding defects, and processing flaws in critical components.
- Weld Inspection:Detecting cracks, lack of fusion in welded seams (boilers, pipelines).
- Aerospace:Checking engine parts, landing gear for fatigue cracks.
- Automotive:Inspecting crankshafts, gears, axles.
- Oil & Gas:Testing pipelines and offshore structures.
- Power Generation:Examining turbines, boilers, and heavy equipment.
- Casting/Forging:Finding shrinkage cracks, laps, hot tears, and inclusions in raw components.
- Underwater Inspection:Testing submerged structures like pipelines.
Key Advantages
- Detects both surface and near-surface flaws.
- Relatively fast, low-cost, and portable.
- Surface prep is less critical than other methods.
- Provides visual confirmation of defect size/shape.



