Some computational considerations in eddy-current NDE

Hower, G. L.; Philipp, L. D.; Abtahi, A.; Rupe, R. W.

doi:10.1007/bf00711099

Cited by 1 publication

(1 citation statement)

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“…In the following Comsol software packages is used to model a testing setup having the form of system shown in figure 1, [8]. The inductive coil is made from cupper for which the electric conductivity is A finite element model was derived under the code Comsol Multiphysics [7].…”

Section: Modelling Eddy-current Field In a Perfect Conductive Materialsmentioning

confidence: 99%

Detection of localized damage by eddy currents technique

Aoukili

Khamlichi

2014

MATEC Web of Conferences

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Abstract. Non destructive evaluation techniques based on eddy currents (EC) are largely used for quality control of the castings in a lot of industries. The principle of detection by EC consists in using an adequate inductive coil to generate them by a variable magnetic field, and measuring their effects by using one or several sensors. These effects result from the interaction between the induced magnetic field and the excited conductive material. A local variation of the physical properties or geometry of the tested sample, due to a singularity or a flaw, causes a modification of the EC distribution, enabling thus detection. In order to optimize the capacity of defect revealing by means of EC based probes, an accurate modelling of the problem is essential. This can be used to perform simulation of the EC distribution under different circumstances and to analyze the EC sensitivity to the various implicated parameters. In this work, the modelling of EC is made by using the finite element method. Using a B-scan strategy was used, detection of a small defect having the shape of an open cavity is shown to be correctly indicated via monitoring variations of the induced voltage in the receiver coil.

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Section: Modelling Eddy-current Field In a Perfect Conductive Materialsmentioning

confidence: 99%