Magnetic particle inspection (MPI)

{
  "id": "MLC-T-OAG-002255",
  "term": "Magnetic particle inspection (MPI)",
  "field": "Oil and gas",
  "definition": "A non-destructive testing method used to detect surface and near-surface discontinuities in ferromagnetic materials. A magnetic field is applied to the part, and fine magnetic particles are then spread over the surface; these particles accumulate at any flaws, making them visible. MPI is widely used for inspecting welds, castings, and forged components in pipelines, pressure vessels, and structural steel.",
  "abbreviation": "MPI",
  "subject": "Production",
  "url": "https://mlchart.com/terminology/oil-and-gas/magnetic-particle-inspection-mpi/"
}