NDT Certification Program · MPT Course
A self-paced module covering MPI equipment, accessory checks and the current-calculation formulae used for permanent magnets, yokes, coils, headshots, central conductors and prods — with field-direction theory, magnetic-medium control checks and indication interpretation.
Module Specification
MPT-1B · Magnetic Particle Testing
What you'll learn
Calculate magnetising current for yoke, coil, headshot, central conductor and prod techniques
Perform lifting-power and dead-weight checks on permanent magnets and electromagnetic yokes
Set up and verify MPI equipment, accessories and magnetic medium
Run the wet-bath settling test and interpret particle concentration
Identify, classify and document MPI indications from real test photographs
Curriculum
Watch on any device, complete knowledge checks after key lessons, and finish with a final assessment.
| # | Lesson | Type |
|---|---|---|
| 01 | Current Calculations — Introduction Overview of why current calculations matter in MPI and the units, variables and formulae used across the magnetising techniques covered in this module. | Lesson |
| 02 | Permanent Magnet Technique — Lifting Power Check How to verify a permanent magnet yoke's lifting power against the required minimum (typically 4.5 kg / 10 lb) before use on a test piece. | Lesson |
| 03 | Electromagnetic Yoke Technique — Dead Weight Check Dead-weight verification for AC and DC electromagnetic yokes — minimum lifting requirements, test setup and acceptance criteria. | Lesson |
| 04 | Coil / Solenoid Technique I — Current Calculation Magnetising current for a coil or solenoid — low-fill-factor formula using ampere-turns, part L/D ratio and coil dimensions. | Lesson |
| 05 | Coil / Solenoid Technique II — Current Calculation Adjusted formulae for high-fill-factor coils and offset parts, plus worked numerical examples. | + Knowledge check |
| 06 | Headshot & Central Conductor Techniques — Current Calculation Current calculation for direct-contact headshot and central-conductor circular magnetisation — amps per inch / mm of diameter and threading-bar rules. | Lesson |
| 07 | Prod Technique — Current Calculation Prod spacing, current ranges (amps per inch of prod spacing) and safety considerations for portable prod magnetisation. | Lesson |
| 08 | Testing Procedure, Precleaning & Direction of Field Standard MPI testing sequence: surface preparation, precleaning methods, application of field, and ensuring two perpendicular field directions. | Lesson |
| 09 | Importance of Field Direction Why detection is maximised when the magnetic field is perpendicular to a discontinuity, and the consequences of misaligned fields. | + Knowledge check |
| 10 | Equipment & Accessories Survey of MPI hardware — yokes, prods, coils, bench units, UV lamps, white-light meters, gauss meters and field indicators. | Lesson |
| 11 | Equipment Control Checks & Using Magnetic Medium Daily / periodic equipment control checks — ammeter, timer, quick-break — and correct application of dry and wet magnetic media. | Lesson |
| 12 | Wet Bath Settling Test Procedure for the wet-bath particle-concentration settling test using a centrifuge tube — acceptable ranges for visible and fluorescent baths. | + Knowledge check |
| 13 | Interpretation of Indications Distinguishing relevant, non-relevant and false indications — typical patterns for cracks, laps, seams, inclusions and magnetic writing. | Lesson |
| 14 | Photographs of MT Indications Real-world photographs of MPI indications walked through with commentary on classification, severity and reporting. | Lesson |
| ★ | Final Assessment 15 questions · 70% required to certify | Assessment |
Begin your training
Create your free Trinity NDT Academy account and start your first lesson in minutes.