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Powder-bed stabilization for powder-based additive manufacturing

  • The most successful additive manufacturing (AM) technologies are based on the layer-by-layer deposition of a flowable powder. Although considered as the third industrial revolution, one factor still limiting these processes to become completely autonomous is the often necessary build-up of support structures. Besides the prevention of lateral shifts of the part during the deposition of layers, the support assures quality and stability to the built process. The loose powder itself surrounding the built object, or so-called powder-bed, does not provide this sustenance in most existent technology available. Here we present a simple but effective and economical method for stabilizing the powder-bed, preventing distortions in the geometry with no need for support structures. This effect, achieved by applying an air flow through the powder-bed, is enabling an entirely autonomous generation of parts and is a major contribution to all powder-based additive manufacturing technologies. Moreover,The most successful additive manufacturing (AM) technologies are based on the layer-by-layer deposition of a flowable powder. Although considered as the third industrial revolution, one factor still limiting these processes to become completely autonomous is the often necessary build-up of support structures. Besides the prevention of lateral shifts of the part during the deposition of layers, the support assures quality and stability to the built process. The loose powder itself surrounding the built object, or so-called powder-bed, does not provide this sustenance in most existent technology available. Here we present a simple but effective and economical method for stabilizing the powder-bed, preventing distortions in the geometry with no need for support structures. This effect, achieved by applying an air flow through the powder-bed, is enabling an entirely autonomous generation of parts and is a major contribution to all powder-based additive manufacturing technologies. Moreover, it makes powder-based AM independent of gravitational forces, which will facilitate crafting items in space from a variety of powdery materials.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Andrea Zocca, Cynthia Wirth, T. Mühler, Jens Günster
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Advances in mechanical engineering
Jahr der Erstveröffentlichung:2014
Organisationseinheit der BAM:5 Werkstofftechnik
5 Werkstofftechnik / 5.4 Keramische Prozesstechnik und Biowerkstoffe
Veröffentlichende Institution:Bundesanstalt für Materialforschung und -prüfung (BAM)
Verlag:Hindawi Publishing Corporation
Verlagsort:New York, NY ; Cairo
Jahrgang/Band:2014
Erste Seite:491581-1 - 491581-6
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Additive manufacturing; Powder bed
DOI:https://doi.org/10.1155/2014/491581
URN:urn:nbn:de:kobv:b43-314244
ISSN:1687-8132
ISSN:1687-8140
Bemerkung:
Geburtsname von Wirth, Cynthia: Gomes, C. M. -  Birth name of Wirth, Cynthia: Gomes, C. M.
Verfügbarkeit des Dokuments:Datei für die Öffentlichkeit verfügbar ("Open Access")
Lizenz (Deutsch):License LogoCreative Commons - Namensnennung
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:25.09.2014
Schriftenreihen ohne Nummerierung:Wissenschaftliche Artikel der BAM