Magnetic Particle Testing

(Non–Destructive Testing Training Program)

Module 1:   Introduction And Testing Philosophy

Module 2 :  Principles of Magnetic Particle Testing

Module 3 :  Magnetic Particle Test Equipment

Module 4 :  Mediums, Their Characteristics, And Application

Module 5 :  Magnetic Particle Applications, And Classification

Module 6 :  Magnetic Particle indications, Their characteristics

Module 7 :  Comparison And Selection Of  NDT processes

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Module 1: Introduction and Testing Philosophy

General

Purpose

Description Of Content

1. Arrangement

2. Locators

Industrial Applications Of Magnetic

Particle Testing

Testing Philosophy

Personnel

Testing Criteria

Test Procedures

Test Objective

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Module 2 : Principles Of Magnetic Particle Testing

General, Theory Of Magnetism

1. General

2. Magnetic Poles

3. Magnetic Field

4. Lines of Force

5. Longitudinal Magnetization

6. Horseshoe Magnet

7. Vector Field

8. Consequent Poles

9. Distorted Field

10. Leakage Field

Magnetic Materials

Electrically Induced Magnetic Fields

1. General

2. Right–Hand Rule

3. Coil

4. Magnetic Flux

5. Flux Density

6. Permeability

7. Reluctance

8. Residual Magnetism

9. Retentivity

10. Coercive Force

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Hysteresis Loop

1. General

2. Virgin Curve

3. Residual Magnetism .

4. Coercive Force .

5. Reverse Polarity

6. Curve Characteristics

Circular And Longitudinal Magnetization

1. General

2. Circular Magnetization .

3. Longitudinal Magnetization

Field Distribution In Magnetic And Nonmagnetic Conductors .

1. General

2. Solid Nonmagnetic Conductor

3. Solid Magnetic Conductor .

4. Hollow Nonmagnetic Conductor .

5. Hollow Magnetic Conductor

6. Alternating Current Field Distribution

7. Direct Current Residual Fields .

8. Alternating Current Residual Fields .

Magnetizing Current Characteristics

1. General

2. Alternating Current

3. Half–Wave Rectified Current

4. Penetration Characteristics

Current Requirements

1. General

2. Circular Magnetization

3. Longitudinal Magnetization

4. Prod Magnetization

Theory Of Demagnetization

1. General

2. Alternating Current Demagnetization

3. Direct Current Demagnetization

4. Efficiency of Demagnetization

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Module 3 : Magnetic Particle Test Equipment

General

Medium

1. General

2. Equipment Consideration

Wet Horizontal Equipment

Mobile Equipment

1. Current and Voltage Selection

2. Methods Used with Mobile Equipment

3. Operation of Mobile Equipment

Portable Equipment

Demagnetization Equipment

Accessories

White (Visible) Light

Black Light

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Module 4 : Mediums And Their Preparation

General

Testing Methods

1. General

2. Magnetic Properties

3. Geometric Properties

4. Mobility

5. Visibility

6. Methods of Application

7. Particle Requirements

Wet Suspensions (Bath)

1. General

2. Agitation

3. Settling Test

4. Bath Maintenance

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Module 5 : Magnetic Particle Application

General

Classification Of Magnetizing Methods

Residual Method

Continuous Method

Circular Magnetization Procedures

Longitudinal Magnetization Procedures

Direct Current

Alternating Current

Special Magnetizing Methods

1. Induced Current Magnetization

2. Swinging–Field Magnetization

Testing Medium

1. General 

2. Dry Powder .

3. Wet Bath Medium (Non fluorescent)

4. Wet Bath Medium (Fluorescent)

5. Bath Strength

Surface Preparation

Location Of Discontinuities

Demagnetization Requirements

Final Cleaning

Magnetic Rubber Inspection

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Module 6 : Classification Of Discontinuities

General Introduction

Discontinuities

1. General

2. Surface Indications

3. Subsurface Indications

4. Non-relevant Indications

Classification Of Discontinuities By Origin

1. General

2. Inherent Discontinuities

3. Processing Discontinuities

4. Service Discontinuities

Preservation Of Indications

1. General

2. Lacquer Transfer Technique

3. Photographic Technique (Nonfluorescent).

4. Photographic Technique (Fluorescent)

5. Transparent Tape Transfer Technique

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Module 7 : Comparison And Selection Of  NDT Processes

General

Method Identification

NDT Discontinuity Selection

Discontinuity C

Discontinuity Characteristics And Metallurgical Analysis

NDT Methods Application And Limitations

Burst

Cold Shuts

Fillet Cracks (Bolts)

Grinding Cracks

Convolution Cracks

Heat–Affected Zone Cracking

Heat–Treat Cracks

Surface Shrink Cracks

Thread Cracks

Tubing Cracks

Hydrogen Flake

Hydrogen Embrittlement

Inclusions

Lack Of Penetration

Laminations

Laps And Seams

Micro Shrinkage

Gas Porosity

Unfused Porosity

Stress Corrosion

Hydraulic Tubing

Mandrel Drag

Semiconductors

Hot Tears Intergranular Corrosion

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