Detection of Sub-Surface Defects in Semi-Finished Products from Aluminum Alloys by the Eddy Current Method
Józef Krysztofik
Łukasiewicz Research Network – Institute of AviationWarsaw, Poland
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and Maciej Malicki
Łukasiewicz Research Network – Institute of AviationWarsaw, Poland
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Jul 28, 2022
About this article
Published Online: Jul 28, 2022
Page range: 31 - 39
DOI: https://doi.org/10.2478/fas-2021-0004
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© 2021 Józef Krysztofik et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The article presents the results of tests aimed at detecting discontinuities in the subsurface layer of elements intended for further processing. For the initial identification of discontinuities, the method of computed tomography was used. Based on the tomographic images of selected typical defects and measurements of the electrical conductivity of the material, the parameters for the eddy current tests were determined. A series of discontinuities in the subsurface layer to a depth of about 0.48 mm were detected. This allowed, at a given stage of machining, relevant elements to be selected for further processing.