NDT205 — Electromagnetic Testing (ET) Level II
3 , 3 lecture periods 0 lab periods Provides a thorough grounding in the principles of eddy current testing and the fundamentals of engineering, materials, and components. Introduces and prepares the student for flaw detection with the use of surface scan and rotary scan procedures. Also includes a basic understanding of all the eddy current methods. Demonstrate proficient knowledge of the use of eddy current equipment. Demonstrate proficient knowledge of how to set up and calibrate NDT equipment. Demonstrate proficient knowledge of alternating current field measurement, flux leakage, and remote field eddy current methods. Outline: Selection of Test Frequency Test frequency Depth of penetration Single frequency Dual frequency Coupling Lift-off and fill factor Lift-off Fill factor Electromagnetic Testing Applications Eddy current applications Aerospace applications Measurement of metal and thickness coating Reference standards Test of metal conductivity Testing of bolt holes Testing of aircraft structures Chemical and petroleum applications Primary metal industries Factors Affecting Flux Leakage Fields Defect geometry, location and orientation Subsurface discontinuities Degree of initial magnetization Selection of Magnetizing Method Permanent magnets Electromagnets Right hand rule Testing in the residual field Magnetizing by direct current Magnitudes of magnetic flux leakage fields Flux Leakage Applications Heat exchanger and boiler tubes Wire rope inspection Round bars and tu
Prerequisites: NDT105