A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security

Abstract This study describes procedures for embedding digital information into additively manufactured components as well as procedures for readout and tensile testing. Embedded digital codes were printed inside ASTM E8/E8M dumbbells using Direct Metal Laser Melting (DMLS) with an EOS M290 printer....

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Main Authors: Saber Nemati, Ali Mahmoudi, Kyungmin Ham, Tie Siemers, Shengmin Guo, Josephine Gutekunst, Joachim Schulz, Ian Taylor, Michele Maasberg, Leslie G. Butler
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-025-87215-0
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author Saber Nemati
Ali Mahmoudi
Kyungmin Ham
Tie Siemers
Shengmin Guo
Josephine Gutekunst
Joachim Schulz
Ian Taylor
Michele Maasberg
Leslie G. Butler
author_facet Saber Nemati
Ali Mahmoudi
Kyungmin Ham
Tie Siemers
Shengmin Guo
Josephine Gutekunst
Joachim Schulz
Ian Taylor
Michele Maasberg
Leslie G. Butler
author_sort Saber Nemati
collection DOAJ
description Abstract This study describes procedures for embedding digital information into additively manufactured components as well as procedures for readout and tensile testing. Embedded digital codes were printed inside ASTM E8/E8M dumbbells using Direct Metal Laser Melting (DMLS) with an EOS M290 printer. The codes were configured as either ellipsoids or prolate spheroids in patterns given by the Cantor dust fractal. Tensile testing was performed on 15 dumbbells, 7 with digital codes in the gauge volume and 8 with codes in the dumbbell tail. Results showed that the dumbbells met the ultimate tensile strength specification for the EOS AlF357 powder. X-ray imaging, both conventional and interferometry, was explored to detect the digital information. X-ray tomography showed measured ellipsoid volumes slightly larger than as-designed ellipsoid volumes, even when partially filled with loose powder. X-ray interferometry showed increased void detectability, one advantage of loose powder. These results suggest a standard selective laser sintering printer with typical metal powders could reasonably expect to print 100 bits of embedded digital information in a gauge volume 6 mm in diameter as 300  $$\upmu$$ m voids while still maintaining tensile specifications.
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institution Kabale University
issn 2045-2322
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publishDate 2025-01-01
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spelling doaj-art-ed0f3fedef1340989547d064cdfaf1752025-01-26T12:28:59ZengNature PortfolioScientific Reports2045-23222025-01-0115111110.1038/s41598-025-87215-0A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain securitySaber Nemati0Ali Mahmoudi1Kyungmin Ham2Tie Siemers3Shengmin Guo4Josephine Gutekunst5Joachim Schulz6Ian Taylor7Michele Maasberg8Leslie G. Butler9Department of Mechanical & Industrial Engineering, Louisiana State UniversityDepartment of Mechanical & Industrial Engineering, Louisiana State UniversityCenter for Advanced Microstructures and Devices (CAMD), Louisiana State UniversityFederal Division, Phillips CorporationDepartment of Mechanical & Industrial Engineering, Louisiana State UniversityMicroworks GmBHMicroworks GmBHSIMBA ChainDepartment of Cyber Science, United States Naval AcademyRefined Imaging LLCAbstract This study describes procedures for embedding digital information into additively manufactured components as well as procedures for readout and tensile testing. Embedded digital codes were printed inside ASTM E8/E8M dumbbells using Direct Metal Laser Melting (DMLS) with an EOS M290 printer. The codes were configured as either ellipsoids or prolate spheroids in patterns given by the Cantor dust fractal. Tensile testing was performed on 15 dumbbells, 7 with digital codes in the gauge volume and 8 with codes in the dumbbell tail. Results showed that the dumbbells met the ultimate tensile strength specification for the EOS AlF357 powder. X-ray imaging, both conventional and interferometry, was explored to detect the digital information. X-ray tomography showed measured ellipsoid volumes slightly larger than as-designed ellipsoid volumes, even when partially filled with loose powder. X-ray interferometry showed increased void detectability, one advantage of loose powder. These results suggest a standard selective laser sintering printer with typical metal powders could reasonably expect to print 100 bits of embedded digital information in a gauge volume 6 mm in diameter as 300  $$\upmu$$ m voids while still maintaining tensile specifications.https://doi.org/10.1038/s41598-025-87215-0
spellingShingle Saber Nemati
Ali Mahmoudi
Kyungmin Ham
Tie Siemers
Shengmin Guo
Josephine Gutekunst
Joachim Schulz
Ian Taylor
Michele Maasberg
Leslie G. Butler
A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
Scientific Reports
title A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
title_full A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
title_fullStr A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
title_full_unstemmed A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
title_short A process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
title_sort process inspired by fractals for embedding digital codes into additively manufactured components for supply chain security
url https://doi.org/10.1038/s41598-025-87215-0
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