Eddy Current Inspection, Level I

Eddy Current inspection is very interesting to us. Eddy Current (ET) combines some aspects of magnetic particle inspection (the magnetic fields, currents in a conductor, and others) with ultrasonic inspection (interpretation of a not-always-easy-to-read display). This results in another method where a sound background in the physics of the method goes a long way.

In eddy current inspection, a current is passed through a coil of conductive material which produces a magnetic field around the coil. The coil is brought near the inspection surface, and the magnetic field produces a current in the conductive test piece. These two fields are balanced against each other, and a zero point is seen on the screen of the instrument. If nothing disturbs this balance, nothing will happen on the instrument. When something does interfere with this balance, the ratio is disturbed and represented on the instrument screen.

ND3 will uncomplicate this complex method preparing you for your career as an Eddy Current Technician, Level I.

Subjects Covered:

1. Introduction to Eddy Current Testing
2. Electromagnetic Theory
3. Lab Demonstrations
4. Types of Eddy Current Sensing Elements
5. Selection of Inspection Parameters
6. Readout Mechanisms

Subjects taken from ASNT CP-105 as the basis for course subject matter. Additional subject material may be presented for clarification, requirement changes, or student/employer addition based upon specific need.