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dc.contributor.authorCloots, Michael-
dc.contributor.authorZumofen, Livia-
dc.contributor.authorSpierings, Adriaan Bernardus-
dc.contributor.authorKirchheim, Andreas-
dc.contributor.authorWegener, Konrad-
dc.date.accessioned2018-04-10T11:45:48Z-
dc.date.available2018-04-10T11:45:48Z-
dc.date.issued2017-
dc.identifier.issn1355-2546de_CH
dc.identifier.issn1758-7670de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/4987-
dc.description.abstractPurpose: For geometries exhibiting overhanging surfaces, support structures are needed to dissipate process heat and to minimize geometrical distortions attributed to internal stresses. The use of support structures is often time- and cost-consuming. For this reason, this study aims to propose an approach which minimizes the use of such structures. Design/methodology/approach: For minimizing the use of support structures, process parameters in combination with a contour-like exposure strategy are developed to realize support-less overhanging structures of less than 35°. These parameters are implemented in a shell-core strategy, which follows the idea of applying different processing strategies to the critical (overhanging) shell and the uncritical core of the part. Thereby, the core is processed with standard parameters, aiming a dense material. On the critical shell, optimized processing parameters are applied, reaching good results in terms of surface quality, especially at extreme overhang situations. Findings: The results show that the selective laser melting (SLM) technology is able to realize support-less overhanging surfaces by choosing suitable scan strategies and process parameters. Particularly good results are always obtained when the exposure direction of the shell is parallel to the contour of the sample. Originality/value: The validity of the results is demonstrated through the successful reproduction of the build strategy on two commercial SLM machines, reaching support-free builds of surfaces with an angle to the horizontal of less than or equal to 30°.de_CH
dc.language.isoende_CH
dc.publisherEmeraldde_CH
dc.relation.ispartofRapid Prototyping Journalde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectSLMde_CH
dc.subjectOverhanging surfacesde_CH
dc.subjectScan strategiesde_CH
dc.subjectSupportlessde_CH
dc.subject.ddc670: Industrielle und handwerkliche Fertigungde_CH
dc.titleApproaches to minimize overhang angles of SLM partsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Product Development and Production Technologies (IPP)de_CH
dc.identifier.doi10.1108/RPJ-05-2015-0061de_CH
zhaw.funding.euNode_CH
zhaw.issue2de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end369de_CH
zhaw.pages.start362de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume23de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedAdditive Manufacturingde_CH
Appears in collections:Publikationen School of Engineering

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Cloots, M., Zumofen, L., Spierings, A. B., Kirchheim, A., & Wegener, K. (2017). Approaches to minimize overhang angles of SLM parts. Rapid Prototyping Journal, 23(2), 362–369. https://doi.org/10.1108/RPJ-05-2015-0061
Cloots, M. et al. (2017) ‘Approaches to minimize overhang angles of SLM parts’, Rapid Prototyping Journal, 23(2), pp. 362–369. Available at: https://doi.org/10.1108/RPJ-05-2015-0061.
M. Cloots, L. Zumofen, A. B. Spierings, A. Kirchheim, and K. Wegener, “Approaches to minimize overhang angles of SLM parts,” Rapid Prototyping Journal, vol. 23, no. 2, pp. 362–369, 2017, doi: 10.1108/RPJ-05-2015-0061.
CLOOTS, Michael, Livia ZUMOFEN, Adriaan Bernardus SPIERINGS, Andreas KIRCHHEIM und Konrad WEGENER, 2017. Approaches to minimize overhang angles of SLM parts. Rapid Prototyping Journal. 2017. Bd. 23, Nr. 2, S. 362–369. DOI 10.1108/RPJ-05-2015-0061
Cloots, Michael, Livia Zumofen, Adriaan Bernardus Spierings, Andreas Kirchheim, and Konrad Wegener. 2017. “Approaches to Minimize Overhang Angles of SLM Parts.” Rapid Prototyping Journal 23 (2): 362–69. https://doi.org/10.1108/RPJ-05-2015-0061.
Cloots, Michael, et al. “Approaches to Minimize Overhang Angles of SLM Parts.” Rapid Prototyping Journal, vol. 23, no. 2, 2017, pp. 362–69, https://doi.org/10.1108/RPJ-05-2015-0061.


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