Detection of localized damage by eddy currents technique
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 u...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2014-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/matecconf/20141607001 |
| _version_ | 1818879587571990528 |
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| author | Aoukili A. Khamlichi A. |
| author_facet | Aoukili A. Khamlichi A. |
| author_sort | Aoukili A. |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-19T14:32:27Z |
| format | Article |
| id | doaj.art-825fb2ec519d4bb9833196c4c7badce4 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-19T14:32:27Z |
| publishDate | 2014-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-825fb2ec519d4bb9833196c4c7badce42022-12-21T20:17:24ZengEDP SciencesMATEC Web of Conferences2261-236X2014-01-01160700110.1051/matecconf/20141607001matecconf_csndd2014_07001Detection of localized damage by eddy currents techniqueAoukili A.Khamlichi A.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.http://dx.doi.org/10.1051/matecconf/20141607001 |
| spellingShingle | Aoukili A. Khamlichi A. Detection of localized damage by eddy currents technique MATEC Web of Conferences |
| title | Detection of localized damage by eddy currents technique |
| title_full | Detection of localized damage by eddy currents technique |
| title_fullStr | Detection of localized damage by eddy currents technique |
| title_full_unstemmed | Detection of localized damage by eddy currents technique |
| title_short | Detection of localized damage by eddy currents technique |
| title_sort | detection of localized damage by eddy currents technique |
| url | http://dx.doi.org/10.1051/matecconf/20141607001 |
| work_keys_str_mv | AT aoukilia detectionoflocalizeddamagebyeddycurrentstechnique AT khamlichia detectionoflocalizeddamagebyeddycurrentstechnique |