Codes & Standards - Purchase
The terms specified in this document are mandatory for application in all types of documentation and literature of non-destructive testing, using the metal magnetic memory technique.
This NDT technique has the following objectives:
— determination of the heterogeneity of the magneto-mechanical state of ferromagnetic objects, detection of defect concentration and boundaries of metal microstructure heterogeneity;
— determination of locations with magnetic stray field aberrations for further microstructural analysis and/or non-destructive testing and evaluation;
— early diagnostics of fatigue damage of the inspected object and evaluation of its structural life time;
— quick sorting of new and used inspection objects by their magnetic heterogeneity for further testing;
— efficiency improvement of non-destructive testing by combining metal magnetic memory testing with other NDT methods or techniques (ultrasonic testing, x-ray, etc.) by fast detection of the most probable defect locations;
— quality control of welded joints of various types and their embodiment (including contact and spot welding). See ISO 24497-2 for details of this application.