New Technologies in Electromagnetic Non-destructive Testing

Electromagnetic ultrasonic guided wave testing.- Outline.- Factors influencing the performance of EMATs.- EMATs for pipeline axial guided wave generation.- The dispersion characteristic of the guided waves.- The electromagnetic ultrasonic guided wave testing technology.- Pulsed eddy current testing.- Basic principle of electromagnetism.- The coil type probe for the pulsed eddy current testing.- The electronic circuit used in the pulsed eddy current testing.- The remote field eddy current testing.- The mathematical model of the remote field eddy current testing.- The finite element simulation and modeling of the remote field eddy current in the pipeline.- The 2D finite element simulation of the remote field eddy current in the pipeline.- The 3D finite element simulation of the remote field eddy current in the pipeline.- Low frequency eddy current testing.- The low frequency eddy current-based testing system of the pipeline deformation.- The metal magnetic memory testing.- The principleof testing.- The relation between the magnetic field of the earth and the magnetic memory of the ferromagnetic materials.- Measuring the distribution of the stress using the metal magnetic memory.- The magnetic flux leakage testing.- The principle of the MFL testing.- The factors influencing the MFL testing.- The defect size quantification methods in the MFL testing.- The pulsed MFL testing.- References.

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• Eletromagnetismo eletricidade, magnetismo e
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Electromagnetic nondestructive testing;Electromagnetic ultrasonic guided wave;Remote field eddy current;Pulsed eddy current;Metal magnetic memory;Magnetic flux leakage