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Selective laser melting for manufacturing of thin-walled porous elements

Abele, Eberhard ; Stoffregen, Hanns ; Kniepkamp, Michael ; Lang, Sebastian ; Hampe, Manfred :
Selective laser melting for manufacturing of thin-walled porous elements.
[Online-Edition: http://dx.doi.org/10.1016/j.jmatprotec.2014.07.017]
In: Journal of Materials Processing Technology, Elsevier 114–122. ISSN 0924-0136
[Artikel] , (2015)

Offizielle URL: http://dx.doi.org/10.1016/j.jmatprotec.2014.07.017

Kurzbeschreibung (Abstract)

Selective laser melting (SLM) as additive manufacturing technology is studied in this paper for the gen-eration of thin-walled elements with defined porosity characteristics. Building accuracy is studied andoptimised regarding the manufacturing of thin walls. Leakage tests were performed to analyse the effectof wall thickness on gastightness. The influences of the SLM process parameters laser power, scan speed,and hatch distance on porosity and mechanical characteristics are investigated using a DoE approach.Porosity, permeability, pore size distribution, and tensile strength were analysed. Statistical significantregression models were found for porosity and tensile strength which allow tailored properties within thestudied design space. A maximum porosity of 17.35 with a permeability of 2560 E-12 m2was obtained.Macro pore sizes showed a unimodal pore size distribution with peaks between 7 and 16

Typ des Eintrags: Artikel
Erschienen: 2015
Autor(en): Abele, Eberhard ; Stoffregen, Hanns ; Kniepkamp, Michael ; Lang, Sebastian ; Hampe, Manfred
Titel: Selective laser melting for manufacturing of thin-walled porous elements
Sprache: Englisch
Kurzbeschreibung (Abstract):

Selective laser melting (SLM) as additive manufacturing technology is studied in this paper for the gen-eration of thin-walled elements with defined porosity characteristics. Building accuracy is studied andoptimised regarding the manufacturing of thin walls. Leakage tests were performed to analyse the effectof wall thickness on gastightness. The influences of the SLM process parameters laser power, scan speed,and hatch distance on porosity and mechanical characteristics are investigated using a DoE approach.Porosity, permeability, pore size distribution, and tensile strength were analysed. Statistical significantregression models were found for porosity and tensile strength which allow tailored properties within thestudied design space. A maximum porosity of 17.35 with a permeability of 2560 E-12 m2was obtained.Macro pore sizes showed a unimodal pore size distribution with peaks between 7 and 16

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Materials Processing Technology, Elsevier
Freie Schlagworte: Selective laser melting, Additive manufacturing, Porosity, Thin walls
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Institut für Produktionsmanagement, Technologie und Werkzeugmaschinen (PTW)
16 Fachbereich Maschinenbau > Institut für Produktionsmanagement, Technologie und Werkzeugmaschinen (PTW) > Additive Fertigung und Dentale Technologie
16 Fachbereich Maschinenbau > Fachgebiet für Thermische Verfahrenstechnik (TVT)
Hinterlegungsdatum: 10 Sep 2014 08:12
Offizielle URL: http://dx.doi.org/10.1016/j.jmatprotec.2014.07.017
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