What magnetic particle testing reveals
MT magnetizes a ferromagnetic component and applies visible or fluorescent magnetic particles. Leakage fields created by a discontinuity attract the particles, producing an indication that a qualified technician can evaluate.
Common MT applications
Typical applications include welds and heat-affected zones, carbon-steel forgings and castings, structural parts, machined components and repaired areas.
When MT is a strong choice
MT is valuable when the component is ferromagnetic and the primary concern is a tight crack or another discontinuity at, or close to, the surface. It can cover a practical inspection area quickly.
Limitations to consider
Material suitability must be confirmed before inspection. Geometry, surface condition, coatings, access and the required direction of magnetization can affect the examination.
Controlled examination and reporting
VeriTech provides Level II / Level III capability for MT. Examination conditions and results are documented to support traceability through final reporting.
Compare all VeriTech NDE methods or read our method-selection guide.