Magnetic Particle Testing - Level I

1.0 Principles of Magnets and Magnetic Fields

• 1.1 Theory of magnetic fields
• 1.2 Theory of magnetism
• 1.3 Terminology associated with magnetic particle testing

2.0 Characteristics of Magnetic Fields

(Bar magnet, Ring magnet)

3.0 Effect of Discontinuities of Materials

(Surface cracks, Scratches, Subsurface defects)

4.0 Magnetization by Means of Electric Current

• 4.1 Circular field
• 4.2 Longitudinal field

5.0 Selecting the Proper Method of Magnetization

(Alloy, shape, and condition of part, Type of magnetizing current, Direction of magnetic field, Sequence of operations, Value of flux density )

4.0    Inspection Materials

(Wet particles, Dry particles)

7.0 Principles of Demagnetization

(Residual magnetism, Reasons for requiring demagnetization)

8.0 Magnetic Particle Testing Equipment

• 8.1 Equipment-selection considerations
• 8.2 Manual inspection equipment
• 8.3 Medium- and heavy -duty equipment
• 8.4 Stationary equipment
• 8.5 Mechanized inspection equipment

9.0 Types of Discontinuities Detected by Magnetic Particle Testing

(Inclusions, Blowholes, Porosity, Flakes, Cracks, Pipes, Laminations, Laps, Forging bursts, Voids)

10.0 Magnetic Particle Test Indications and Interpretations

• 10.1 Indications of non metallic inclusions
• 10.2 Indications of surface seams
• 10.3 Indications of cracks
• 10.4 Indications of laminations
• 10.5 Indications of laps
• 10.6 Indications of bursts and flakes
• 10.7 Indications of porosity
• 10.8 Non relevant indications

11.0 Practical Training

Yokes, Prods, Headshot, Central Conductor, Coil Techniques, Using Dry, Wet Visible and Wet Fluorescent Techniques, Demagnetisation