1. Introduction Eddy current examination has its origin with Michael Faraday's discovery of electromagnetic induction in 1831. Faraday was a chemist in England during early 1800's and is credited with the discovery of electromagnetic induction, electromagnetic rotations as the magneto-optical effect, diamagnetism and other phenomena [1]. Faraday discovered that when a magnetic field passes thro...

Artefacts caused by eddy currents are a major problem in diffusion weighted imaging. This is particularly acute in experiments in which a number of images with differing degrees of diffusion weighting and/or differently oriented diffusion-weighting gradients need to be combined. The echo-planar imaging sequence is particularly sensitive to the effects of residual eddy currents, especially due t...

Control by eddy current is one of techniques that’s very used in nondestructive evaluation of materials .These processes find an application significant in the determination of the mechanical and metallurgical parameters of materials. The object of this work is to carry out an analysis of the residual stresses in the material created by external solicitations and analysed by eddy currents as a ...

Since the depth of surface-breaking cracks often determines the remairring life of a part, the characterization of surface-breaking cracks is a key problern in nondestructive evaluation. Eddy currents have been used for this purpose [1]. However, traditional eddy current methods have poor success when the dimensions of the crack are small compared with the inner radius of the eddy current probe...

Eddy current testing is a kind of non-destructive testing (NDT) method based on the principle of electromagnetic induction. The probe is the key of eddy current non-destructive inspection and its design or combination of form will influence detectability. A complete set of eddy current testing system is designed for standard testing copper and defect copper. Under the same liftoff distance and ...

The Eddy current technique has been successfully used in a variety of non-destructive evaluation applications including detection of cracks, measurements of material thickness, examining metal thinning, measurements of coating thickness, identification of materials, and detection of corrosion. This paper shows how positional and eddy-current data are combined to produce a C-scan of flaws in con...