Magnetic Particle Inspection

Magnetic Particle Inspection

Magnetic Particle Inspection

(MPI / MT / MPT)

Magnetic Particle Inspection (MPI), also known as Magnetic Particle Testing (MPT) or simply Magnetic Testing (MT), is a widely used Non-Destructive Testing (NDT) method for detecting surface and shallow subsurface defects in ferromagnetic materials such as iron, nickel, cobalt, and their alloys.

How MPI Works

  • The test piece is magnetized to generate a magnetic field.
  • Magnetic particles (dry or wet, visible or fluorescent) are applied.
  • Flux leakage occurs at flaws such as cracks or seams.
  • Particles cluster at leakage points, visually indicating defects.
Quick Fact: MPI requires less surface preparation than many NDT methods, making it one of the fastest and most practical inspection techniques.

Applications of MPI

  • Oil & Gas – pipelines, tanks, and pressure vessels.
  • Power Generation – turbines, generators, and structural parts.
  • Railways – rails, axles, and wheels.
  • Manufacturing – castings, forgings, and weld inspections.
  • Aerospace & Defense – critical ferromagnetic components.

Techniques & Equipment

  • Hand Yoke AC/DC
  • Bench Type (Headshot and Central Conductor methods)
  • Dry Visible / Fluorescent Technique
  • Wet Visible / Fluorescent Technique

FANCO’s MPI Services

FANCO Industrial Solutions provides on-site inspection and certification services using Magnetic Particle Inspection. Our inspections are conducted by highly skilled NDT professionals.

  • Led by an NDT Manager (Metallurgical Engineer).
  • Level-II inspectors certified per SNT-TC-1A of ASNT, USA.
  • Training from Alpha Tek (www.atdp.com.pk).
  • Capability to develop inspection procedures & interpret results.
  • Trusted services across oil & gas, power, transportation, and manufacturing.
Reminder: Ensure safety and reliability with MPI – one of the fastest and most effective NDT methods for ferromagnetic materials.