NDT Method
What is Magnetic Particle Inspection?
Magnetic Particle Inspection reveals surface and slightly sub-surface cracks in ferromagnetic steel using magnetic fields and iron particles.
Overview
Magnetic Particle Inspection (MPI) magnetises a steel component and applies fine iron particles. Where a crack disrupts the magnetic field, particles gather and make the defect visible to the inspector.
MPI is fast, reliable and low-cost, making it a mainstay of weld and structural steel inspection.
What MPI Detects
- Surface-breaking cracks in steel
- Slightly sub-surface defects
- Weld and heat-affected-zone cracking
- Defects in castings and forgings
Frequently Asked Questions
Related Services
NDT Australia provides these services nationwide with certified, mobile inspectors and clear, compliant reporting.