MAGNETIC PARTICLE TESTING
OBJECTIVE :
This course is designed for participants to understand the history, principles, applications, advantages & limitations, examination techniques, procedures, acceptance standards, and safety requirements of magnetic particle examination method. During the online training students will gain the knowledge and skills required to become Qualified & Certified individual in the method to perform Magnetic Particle Testing on various component or weld of ferromagnetic material.
This course will be useful for those who are interested in making a career in the emerging field of NDT including supervisors, inspectors, auditors and others interested in acquiring a comprehensive understanding of this unique test method.
ABOUT COURSE / SHORT DESCRIPTION :
The ancient Greeks, near the city of Magnesia , knew about strange and rare earth stone with the power to attract Iron. What started in the year 1868 as a method of detecting defects in cannon barrels and other ferromagnetic components by magnetizing them and passing a magnetic compass over them has become an extensively used NDE Method in defence sector. Now MPT is used in all industrial sectors nuclear, aerospace, oil and gas, railways, automotive, petrochemical, steel structures, power generation to examine a variety of welds and components. Magnetic Particle Testing (MPT) is very popular and fastest method of NDT for detection of surface and sub surface discontinuities in the Ferromagnetic Materials which can be easily magnetized compare to Liquid Penetrant Testing. Magnetic particle testing (MT) is a non-destructive testing (NDT) method for detecting discontinuities that are primarily linear and located at or near the surface of ferromagnetic components and structures. The principle of the method is that, the ferromagnetic material is magnetized using Electromagnetic/Permanent Yoke or Prod or other means, and applying ferromagnetic particles (the examinations medium) on the surface during examination. Surface and Sub surface discontinuities that are to the magnetic flux line will produce a Magnetic leakage field that will attract magnetic Dry or Wet particles and forms a visible indication. The curriculum covers all aspects of magnetic particle testing such as, Magnetic Principles & Theory, Flux Leakage, Magnetic Fields, fundamentals of Alternating Current & Direct Current, direct & indirect magnetization, fluorescent & dry powder applications, various techniques etc. Only those metals classified as ferromagnetic can be effectively inspected by MPT. This course fulfils the instruction outline and criteria specified in the ASNT Recommended Practice SNT-TC-1A, ANSI/ASNT CP-189, and ASNT Standard Topical Outlines for Qualification of Non-destructive Testing Personnel (ANSI/ASNT CP-105).A training certificate will be issued upon satisfactory completion of all theory and practical training, quizzes, and examinations.
WHAT WILL YOU TEACH / WHAT PARTICIPANT WILL LEARN :
Upon completion of the course, you will be able to:
1. Perform Magnetic Particle Testing.
2. Become familiar Principles, applications, limitation and advantages of MPT.
3. Become familiar with different techniques and selection of technique of MPT.
4. Become familiar with the different types of material can be tested by MPT.
5. Understand basic Metallurgy related to NDT and the material to be tested.
6. Be familiar with equipment, instrument and consumable required for performing MPT.
7. Be familiar with the procedures, codes, standards involved with the test method.
8. Understand and recognize the typical surface discontinuities, flaws, or irregularities can be detected by MPT.
9. Interpretation and evaluation of indication in line with relevant Acceptance criteria and report preparation.
General Theory:
Key Topics : This module talks on following topics of Magnetic Particle Testing
1. Introduction to Magnetic Particle Testing
2. History of MPT
3. Principles of MPT
3.1. Theory
3.2. Magnets & Magnetism
3.3. Flux Fields
4. Magnetization by means of electric current
4.1. Circular Technique 4.2 Longitudinal Technique
5. Criteria for Selecting proper technique of Magnetization
5.1. Alloy, shape, and condition of part
5.2. Type of magnetizing field
5.3. Direction of magnetic field
5.4. Sequence of operation
6. MPT Techniques and selection of appropriate technique/Equipment.
6.1. Electromagnetic Yoke and Permanent magnetic Yoke Techniques.
6.2. Prod Magnetization technique
6.3. Head shot and Central Conductor Magnetization
6.4. Coil Magnetization
6.5. Multi-direction magnetization
6.6. Residual fields and Continuous fields
7. Examination Medium and Selection of Particle Medium
7.1. Wet Particles.
7.2. Dry Particles.
7.3. Liquids and powders
8. White light and Ultraviolet/Black Lights and Light-meters
9. Types of Discontinuities detected by magnetic particle Testing.
9.1. General category of discontinuity
9.2. Discontinuity in forgings, castings, plates, welds & extrusions.
9.3. Discontinuities in welding
9.4. Indications in MPT
9.5. Inclusion, Blowholes & Porosity.
9.6. Cracks, Flakes & Laminations.
9.7. Laps, Forging Bursts & Voids
9.8. Demagnetization
10. Quality Control of Equipment and Processes