• تهران، میدان ولیعصر (عج)، مرکز تجارت ایرانیان، طبقه 8، واحد 17

Course Duration: ۸۰ hr

EXAMINATIONS

General

Specific

Practical

Candidates must score a minimum of 70 % in each test and a minimum of 80% average for all the three tests

 

Course Outline

Module 1: Electricity

Voltage, Current and Resistance

Ohm’s Law

Inductance

Impedance

Module 2: Magnetism

Magnetism

B-H Curve

Permeability

Module 3: Electromagnetism

Faraday’s Law

Lenz’s Law

Mutual Inductance

Module 4: Introduction to Eddy Current Generation

Generation of Eddy Currents

Impedance changes by Eddy Currents

Module 5: Generation of Eddy Currents

Standard Depth of Penetration

Effect of frequency, conductivity and Permeability

Module 6 – Impedance Plane – Surface Inspection

Conductivity Curve

Lift Off Curve

Permeability

Module 7: ECT Instrumentation

Impedance Displays

Strip Charts

Absolute and Differential Modes

Portable Surface Inspection Equipment

Module 8: Eddy Current Probes

Surface Probes

Encircling Probes

Tubing Probes

Module 9A: Surface Inspection and Applications

Probe Selection

Frequency Selection

Setting the Display 3

Edge Effect

Applications

Module 9B: Inspection of Carbon Steel Welds

Weld Probes

Scan Plans

Equipment Settings

Module 10: Test Parameters

Frequency

Filtering

Suppression of Permeability variations

Module 11: Impedance Plane – Solid Cylinders and Tubing

Solid Cylinder

Solid Cylinder to Tubing · Solid Cylinder with steps

Module 12: Scanning

Scanning Speed

Scanning Pitch

Setting Filters

Module 13: Aircraft Inspection

Surface Inspection

Bolt hole Inspection

Bolt thread inspections

Module 14: Non-ferromagnetic Tubing Inspections

Bobbin Probes

Probe Selection

F۱۸۰ and f۹۰ frequencies

ID vs OD flaws

ASME Calibration Tube

Depth Curves

Data Acquisition Instrumentation

Sampling Rate and Pull Speed

Module 15: Multi-frequency Non-ferromagnetic Tubing Inspections 

Differential and Absolute Tests

Detection of pitting and wall loss

Multi-frequency testing

Mixing Baffle signals

Resolving Permeability

Analysis

Module 16: Introduction to Magnetic Flux Leakage 2

Coils and Hall effect sensors

Probes

Scanning

Module 17: Introduction to ACFM

Principle of ACFM

Bx and By displays

Module 18: Ferromagnetic Tubing Inspection – Remote Field Eddy Current

Principle of RFECT

Near field and Far field

RFT Curves – Circumferential extent and depth

Setting reference of the Baffle signal

Depth Curves

Module 19: ECT Instrument Calibration

Frequency of Instrument Calibration

Phase and amplitude Linearity Requirements

Module 20: Techniques for Heat Exchanger Tubing

Technique Selection for Heat Exchanger Tubing Inspection

Module 20: SPECIFIC TRAINING

Surface ECT Procedure

ASTM E-426

ASME Section V, Article 8

Module 21: PRACTICAL TRAINING

Setting up the Instrument

Selection of Frequencies

Selection of Probe Size

Calibrations

Depth Curve

Data Acquisition

Test on Various Samples

Prepare test report

Exercises o Conductivity curves o Lift Off Curves o Thickness Curves o Clad thickness curves o Notch standard curves