Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology

Additive manufacturing has many positives, but its incorporation into functional parts production is restricted by the presence of defects. Eddy current testing provides solutions for their identification; however, some methodology and measurement standards for AM (additive manufacturing) products a...

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Main Authors: Matúš Geľatko, Michal Hatala, František Botko, Radoslav Vandžura, Jiří Hajnyš
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/15/19/6783
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author Matúš Geľatko
Michal Hatala
František Botko
Radoslav Vandžura
Jiří Hajnyš
author_facet Matúš Geľatko
Michal Hatala
František Botko
Radoslav Vandžura
Jiří Hajnyš
author_sort Matúš Geľatko
collection DOAJ
description Additive manufacturing has many positives, but its incorporation into functional parts production is restricted by the presence of defects. Eddy current testing provides solutions for their identification; however, some methodology and measurement standards for AM (additive manufacturing) products are still missing. The main purpose of the experiment described within this article was to check the ability of eddy current testing to identify AM stainless steel parts and to examine the data obtained by eddy currents variation under the influence of various types of designed artificial defects. Experimental samples were designed and prepared with SLM (selective laser melting) technology. Artificial defects, included in the samples, were detected using the eddy current testing device, taking the important circumstances of this non-destructive method into account. The presented research shows significant potential for eddy current testing to identify defects in AM products, with a resolution of various types and sizes of defects. The obtained data output shows the importance of choosing the right measurement regime, excitation frequency and secondary parameters setup. Besides the eddy current testing conditions, defect properties also play a significant role, such as their shape, size, if they are filled with unmolten powder or if they reach the surface.
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spelling doaj.art-05acf33567a7486c926466baf817e9842023-11-23T20:56:40ZengMDPI AGMaterials1996-19442022-09-011519678310.3390/ma15196783Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing TechnologyMatúš Geľatko0Michal Hatala1František Botko2Radoslav Vandžura3Jiří Hajnyš4Faculty of Manufacturing Technologies, Technical University of Košice with Seat in Prešov, 080 01 Prešov, SlovakiaFaculty of Manufacturing Technologies, Technical University of Košice with Seat in Prešov, 080 01 Prešov, SlovakiaFaculty of Manufacturing Technologies, Technical University of Košice with Seat in Prešov, 080 01 Prešov, SlovakiaFaculty of Manufacturing Technologies, Technical University of Košice with Seat in Prešov, 080 01 Prešov, SlovakiaCenter of 3D Printing Protolab, Department of Machining, Assembly and Engineering Technology, Faculty of Mechanical Engineering, VSB-TU Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava, Czech RepublicAdditive manufacturing has many positives, but its incorporation into functional parts production is restricted by the presence of defects. Eddy current testing provides solutions for their identification; however, some methodology and measurement standards for AM (additive manufacturing) products are still missing. The main purpose of the experiment described within this article was to check the ability of eddy current testing to identify AM stainless steel parts and to examine the data obtained by eddy currents variation under the influence of various types of designed artificial defects. Experimental samples were designed and prepared with SLM (selective laser melting) technology. Artificial defects, included in the samples, were detected using the eddy current testing device, taking the important circumstances of this non-destructive method into account. The presented research shows significant potential for eddy current testing to identify defects in AM products, with a resolution of various types and sizes of defects. The obtained data output shows the importance of choosing the right measurement regime, excitation frequency and secondary parameters setup. Besides the eddy current testing conditions, defect properties also play a significant role, such as their shape, size, if they are filled with unmolten powder or if they reach the surface.https://www.mdpi.com/1996-1944/15/19/6783non-destructive testingeddy currentadditive manufacturingselective laser meltingstainless steelartificial defects
spellingShingle Matúš Geľatko
Michal Hatala
František Botko
Radoslav Vandžura
Jiří Hajnyš
Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology
Materials
non-destructive testing
eddy current
additive manufacturing
selective laser melting
stainless steel
artificial defects
title Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology
title_full Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology
title_fullStr Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology
title_full_unstemmed Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology
title_short Eddy Current Testing of Artificial Defects in 316L Stainless Steel Samples Made by Additive Manufacturing Technology
title_sort eddy current testing of artificial defects in 316l stainless steel samples made by additive manufacturing technology
topic non-destructive testing
eddy current
additive manufacturing
selective laser melting
stainless steel
artificial defects
url https://www.mdpi.com/1996-1944/15/19/6783
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