Surface and near-surface crack detection in ferromagnetic materials — dry and wet fluorescent methods.
MPI detects surface and near-surface discontinuities in ferromagnetic materials by magnetising the component and applying iron particles — defects cause particle accumulations visible under normal or UV light.
Our procedures comply with ASME Section V, AWS D1.1, API 1104, and client-specific codes.
Apply magnetic field using yoke, coil or prod technique as appropriate.
Apply dry powder or wet fluorescent particles to the magnetised surface.
Examine surface under white light or UV light for particle accumulations indicating defects.
Remove residual magnetism after inspection is complete.
Document all indications with location, size and accept/reject status.
