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MT Examination

Magnetic Particle Testing (MT) uses magnetic fields to locate discontinuities in ferromagnetic materials. An electromagnet or permanent magnet can be used to apply the magnetic field. When a discontinuity is present, it distorts the magnetic flux lines and creates its own leakage field. The exam covers MT principles, magnet types, equipment, inspection materials, techniques, calibrations, interpretation, procedures, and safety. References include guides on MT theory, handbooks, and recommended practice supplements.

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164 views1 page

MT Examination

Magnetic Particle Testing (MT) uses magnetic fields to locate discontinuities in ferromagnetic materials. An electromagnet or permanent magnet can be used to apply the magnetic field. When a discontinuity is present, it distorts the magnetic flux lines and creates its own leakage field. The exam covers MT principles, magnet types, equipment, inspection materials, techniques, calibrations, interpretation, procedures, and safety. References include guides on MT theory, handbooks, and recommended practice supplements.

Uploaded by

Sarath S
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Magnetic Particle Testing (MT) Examination

Magnetic Particle Testing (MT)


Magnetic Particle Testing uses one or more magnetic fields to locate surface and near-surface discontinuities in
ferromagnetic materials. The magnetic field can be applied with a permanent magnet or an electromagnet.
When using an electromagnet, the field is present only when the current is being applied. When the magnetic
field encounters a discontinuity transverse to the direction of the magnetic field, the flux lines produce a
magnetic flux leakage field of their own.

Topical Outline
This examination is 2 hrs. in length, having 90 questions of equal value.

1. Principles/Theory
2. Principles of magnets and magnetic fields
3. Characteristics of magnetic fields
4. Equipment/Materials
5. Magnetic particle test equipment
6. Inspection materials
7. Technique/Calibrations
8. Magnetization by means if electric current
9. Selecting the proper method of magnetization
10. Demagnetization
11. Interpretation/Evaluation
12. Procedures
13. Safety and Health

References
The number in parentheses following each reference is the ASNT catalog number.

Level III Study Guide: Magnetic Particle Testing, Second Edition (2253)
NDT Handbook: Third Edition, Volume 8, Magnetic Testing (148)
Supplement to Recommended Practice No. SNT-TC-1A (Q&A) Book Magnetic Particle
Method, Second Edition (2027)

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