Electromagnetic nondestructive evaluation, Volume 1
Eddy current testing is a key technology among electromagnetic non-destructive testings at present and this situation was motivated by a stringent need to detect small cracks in tubing of a steam generator of nuclear power plants. In these five years the ECT technology has been enhanced very much, demonstrating that high performanced sensors for ECT are now ready to be applied to the annual inspection of steam generator tubing with use of arrayed micro sensors for ECT. In addition to the innovative technology, an inversion technique is being theoretically developed to make reconstruction of defects possible with use of data from the arrayed sensors. Rapid growth of interest in electromagnetic nondestructive evaluation have brought together experts from different parts of the world, as reflected in this work. The book is intended for engineers, researchers and practitioners working in the area of electromagnetism.
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Electromagnetic NDE Research Activities in JSAEM T Takagi M Uesaka
Assessment of the Accuracy of Electromagnetic Field Calculations for Non Destructive
Development of 3D Electromagnetic Field FE Code Specialized for the Numerical
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algorithm amplitude axial Boundary Element Method calculated circumferential components computed defect signal density deposit detection coil detector E-mail ECT probe ECT signals eddy current probe eddy current testing eddy-current signal Eddy-Current Testing EDM notch electromagnetic field EMAT Engineering equation exciting coils experimental ferromagnetic Figure finite element finite element method flaw image flaw signal formulation frequency function IEEE impedance change induced inspection inverse problem IOS Press Japan lift-off linear Lissajous magnetic field magnetic flux magnetite magnetostriction material matrix measurement Mitsubishi Heavy Industries neural network nodes noise nondestructive evaluation Nondestructive Testing Nuclear numerical analysis obtained outer diameter pancake coil parameters permeability phase pick-up coil R-coil reconstruction region rope tester rotating S/N ratio scanning SG tubes shape shown in Fig shows simulated slit flaw specimen steam generator tubes stress structure support plate surface Takagi technique type probe ultrasonic University of Tokyo vector potential voltage wavelet coefficients