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Material characterization of AISI 316L flexure pivot bearings fabricated by additive manufacturing

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cris.virtual.departmentFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
cris.virtual.departmentFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
cris.virtual.departmentFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
cris.virtual.departmentFraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU
cris.virtual.departmentFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
cris.virtual.departmentFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
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crisou.acronymIWS
dc.contributor.authorRiede, Mirko
dc.contributor.authorKnoll, Matthias
dc.contributor.authorWilsnack, Christoph
dc.contributor.authorGruber, Samira
dc.contributor.authorCubillo, Alba Alegre
dc.contributor.authorMelzer, Christian
dc.contributor.authorBrandao, A.D.
dc.contributor.authorPambaguian, Laurent
dc.contributor.authorSeidel, André
dc.contributor.authorLópez, Elena M.
dc.contributor.authorBrückner, Frank
dc.contributor.authorLeyens, Christoph
dc.date.accessioned2022-03-06T00:25:39Z
dc.date.available2022-03-06T00:25:39Z
dc.date.issued2019
dc.description.abstractRecently, additive manufacturing (AM) by laser metal deposition (LMD) has become a key technology for fabricating highly complex parts without any support structures. Compared to the well-known powder bed fusion process, LMD enhances manufacturing possibilities to overcome AM-specific challenges such as process inherent porosity, minor build rates, and limited part size. Moreover, the advantages aforementioned combined with conventional machining enable novel manufacturing approaches in various fields of applications. Within this contribution, the additive manufacturing of filigree flexure pivots using 316L-Si by means of LMD with powder is presented. Frictionless flexure pivot bearings are used in space mechanisms that require high reliability, accuracy, and technical cleanliness. As a contribution to part qualification, the manufacturing process, powder material, and fabricated specimens were investigated in a comprehensive manner. Due to its major impact on the process, the chemical powder composition was characterized in detail by energy dispersive X-ray spectroscopy (EDX) and inductively coupled plasma optical emission spectrometry (ICP-OES). Moreover, a profound characterization of the powder morphology and flowability was carried out using scanning electron microscopy (SEM) and novel rheological investigation techniques. Furthermore, quantitative image analysis, mechanical testing, laser scanning microscopy, and 3D shape measurement of manufactured specimens were conducted. As a result, the gained knowledge was applied for the AM-specific redesign of the flexure pivot. Finally, a qualified flexure pivot has been manufactured in a hybrid manner to subsequently ensure its long-term durability in a lifetime test bench.
dc.description.issueNr.15
dc.description.startpageArt. 2426, 24 S.
dc.description.volume12
dc.identifier.doi10.3390/ma12152426
dc.identifier.urihttps://publica.fraunhofer.de/handle/publica/258826
dc.language.isoen
dc.relation.ispartofMaterials
dc.subjectadditive manufacturing
dc.subjectlaser metal deposition
dc.subjectflexure pivot
dc.subjectspace application
dc.subject.ddc621
dc.subject.ddc624
dc.subject.ddc671
dc.titleMaterial characterization of AISI 316L flexure pivot bearings fabricated by additive manufacturing
dc.typejournal article
dspace.entity.typePublication
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationRUAG Space Germany GmbH
oairecerif.author.affiliationRUAG Space Germany GmbH
oairecerif.author.affiliationEuropäisches Weltraumforschungs- und Technologiezentrum
oairecerif.author.affiliationEuropäisches Weltraumforschungs- und Technologiezentrum
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
oairecerif.author.affiliationFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
publica.author.alternativeaffiliationFraunhofer IWS
publica.author.alternativeaffiliationFraunhofer IWS
publica.author.alternativeaffiliationFraunhofer IWS
publica.author.alternativeaffiliationFraunhofer IWS / TU Dresden
publica.author.alternativeaffiliationRUAG Space Germany GmbH
publica.author.alternativeaffiliationRUAG Space Germany GmbH
publica.author.alternativeaffiliationEuropäisches Weltraumforschungs- und Technologiezentrum
publica.author.alternativeaffiliationEuropäisches Weltraumforschungs- und Technologiezentrum
publica.author.alternativeaffiliationFraunhofer IWS
publica.author.alternativeaffiliationFraunhofer IWS
publica.author.alternativeaffiliationFraunhofer IWS / Technische Universität Luleå
publica.author.alternativeaffiliationFraunhofer IWS / TU Dresden
publica.bestOA.pdfhttps://www.mdpi.com/1996-1944/12/15/2426/pdf?version=1564470460
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publica.date14.09.2019
publica.date.scupdated2025-03-27
publica.fhg.departmentIWS 600 Generieren und Drucken
publica.fhg.departmentIWS 641 3D-Generieren
publica.fhg.instituteFraunhofer-Institut für Werkstoff- und Strahltechnik IWS
publica.fhg.location#PLACEHOLDER_PARENT_METADATA_VALUE#
publica.mig.recordnumber277763
publica.oa.url10.3390/ma12152426
publica.peerreviewedUlrichs
publica.peerreviewedScopus
publica.peerreviewedSCOPUS
publica.rights.oaOpen Access
publica.rights.oaStatusgold
publica.rights.oaUnpaywallTrue
publica.rights.timestamp2024-11-21 01:49:28.435158

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