Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples

In the context of rising power densities in electrical machines, additive manufacturing presents an opportunity to develop more powerful thermal solutions. However, the physical properties of objects manufactured using this process remain unclear. This research examines the directional thermal and e...

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Main Authors: Martin Sarap, Hans Tiismus, Ants Kallaste, Mart Saarna, Märt Kolnes, Payam Shams Ghahfarokhi, Toomas Vaimann
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Machines
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Online Access:https://www.mdpi.com/2075-1702/13/1/1
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author Martin Sarap
Hans Tiismus
Ants Kallaste
Mart Saarna
Märt Kolnes
Payam Shams Ghahfarokhi
Toomas Vaimann
author_facet Martin Sarap
Hans Tiismus
Ants Kallaste
Mart Saarna
Märt Kolnes
Payam Shams Ghahfarokhi
Toomas Vaimann
author_sort Martin Sarap
collection DOAJ
description In the context of rising power densities in electrical machines, additive manufacturing presents an opportunity to develop more powerful thermal solutions. However, the physical properties of objects manufactured using this process remain unclear. This research examines the directional thermal and electrical conductivities of aluminum alloy (AlSi10Mg) and silicon steel (Fe-3.7%wt. Si) samples produced via laser powder bed fusion (LPBF), both prior to and following heat treatment. The findings indicate that the as-built aluminum samples exhibit higher conductivities in the orientation parallel to the LPBF build direction, while annealing results in higher conductivities overall and an absence of anisotropy. On the other hand, the silicon steel samples show constant conductivities and lack of anisotropy both before and after heat treatment. These results have practical applications in the design of additively manufactured electrical machines, where the thermal and electrical resistance of the materials have a major impact on thermal and electromagnetic performance.
format Article
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institution Kabale University
issn 2075-1702
language English
publishDate 2024-12-01
publisher MDPI AG
record_format Article
series Machines
spelling doaj-art-958ec1c2bb4e4872a5c99bde608f3f682025-01-24T13:39:05ZengMDPI AGMachines2075-17022024-12-01131110.3390/machines13010001Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si SamplesMartin Sarap0Hans Tiismus1Ants Kallaste2Mart Saarna3Märt Kolnes4Payam Shams Ghahfarokhi5Toomas Vaimann6Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, EstoniaDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, EstoniaDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, EstoniaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, 19086 Tallinn, EstoniaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, 19086 Tallinn, EstoniaElectrical Engineering Unit, Tampere University, P.O. Box 692, FI-33014 Tampere, FinlandDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, EstoniaIn the context of rising power densities in electrical machines, additive manufacturing presents an opportunity to develop more powerful thermal solutions. However, the physical properties of objects manufactured using this process remain unclear. This research examines the directional thermal and electrical conductivities of aluminum alloy (AlSi10Mg) and silicon steel (Fe-3.7%wt. Si) samples produced via laser powder bed fusion (LPBF), both prior to and following heat treatment. The findings indicate that the as-built aluminum samples exhibit higher conductivities in the orientation parallel to the LPBF build direction, while annealing results in higher conductivities overall and an absence of anisotropy. On the other hand, the silicon steel samples show constant conductivities and lack of anisotropy both before and after heat treatment. These results have practical applications in the design of additively manufactured electrical machines, where the thermal and electrical resistance of the materials have a major impact on thermal and electromagnetic performance.https://www.mdpi.com/2075-1702/13/1/1electrical machinesthermal conductivityadditive manufacturing
spellingShingle Martin Sarap
Hans Tiismus
Ants Kallaste
Mart Saarna
Märt Kolnes
Payam Shams Ghahfarokhi
Toomas Vaimann
Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples
Machines
electrical machines
thermal conductivity
additive manufacturing
title Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples
title_full Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples
title_fullStr Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples
title_full_unstemmed Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples
title_short Electrical and Thermal Anisotropy in Additively Manufactured AlSi10Mg and Fe-Si Samples
title_sort electrical and thermal anisotropy in additively manufactured alsi10mg and fe si samples
topic electrical machines
thermal conductivity
additive manufacturing
url https://www.mdpi.com/2075-1702/13/1/1
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AT hanstiismus electricalandthermalanisotropyinadditivelymanufacturedalsi10mgandfesisamples
AT antskallaste electricalandthermalanisotropyinadditivelymanufacturedalsi10mgandfesisamples
AT martsaarna electricalandthermalanisotropyinadditivelymanufacturedalsi10mgandfesisamples
AT martkolnes electricalandthermalanisotropyinadditivelymanufacturedalsi10mgandfesisamples
AT payamshamsghahfarokhi electricalandthermalanisotropyinadditivelymanufacturedalsi10mgandfesisamples
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