Eddy-current inspection (ECI) is a method of Non-Destructive Testing (NDT) that utilises the physics phenomenon of electromagnetic induction to test for surface breaking and subsurface indications in conductive materials. Due to the principles on which it is based, ECI can be carried out on painted or coated components such as crane booms and pipelines.
A probe generates an alternating magnetic field around itself, when the probe is passed across the surface of a test piece, eddy currents are induced into the material. Any defects that are located directly beneath the probe in either material surface or close subsurface cause interruptions in the normal flow of the eddy currents. These interruptions are graphically displayed on the equipment’s screen and are then carefully interpreted by the NDT technician. If a relevant indication is confirmed to be present, then MPI will be carried out in order to ascertain if the indication meets the definition of a defect as laid out in the inspection procedure.
ECI has a number of benefits:
- Fully portable – can be carried out at ground or at height.
- Low set up time due to equipment required.
- Can be carried out in a workshop or on site.
- Ideally suited to painted or coated surfaces.
- Extremely safe method due to no chemicals being required.
Once the inspection has been completed a comprehensive report will be written, this will contain the results of the inspection and will detail the location, size, length and orientation of any relevant defects found as well as recommending any remedial work that may be required.
All Aspect3Sixty technicians are qualified to PCN level 2 and all inspection is carried out using company procedures and adhering to BS EN 1711: 2000 & ISO 17643: 2005.
For more information about the Eddy Current inspection services that Aspect3Sixty offer, please contact us.