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Topography of as built surfaces generated in metal additive manufacturing: A multi scale analysis from form to roughness
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). University of Lyon, ENISE, Laboratoire de Tribologie et Dynamique des Systèmes, Saint-Etienne, France.ORCID-id: 0000-0002-9447-9635
University of Lyon, ENISE, Laboratoire de Tribologie et Dynamique des Systèmes, Saint-Etienne, France.
University of Lyon, ENISE, Laboratoire de Tribologie et Dynamique des Systèmes, Saint-Etienne, France.
University of Lyon, ENISE, Laboratoire de Tribologie et Dynamique des Systèmes, Saint-Etienne, France.
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2018 (engelsk)Inngår i: Precision engineering, ISSN 0141-6359, E-ISSN 1873-2372, Vol. 52, s. 249-265Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Topographies are one of the challenges for the development of the metal additive manufacturing promising technique. The article investigates multi scale topographies (from form to roughness) of as built surfaces generated by selective laser melting (SLM). Different building inclinations of samples were observed both for upskin and downskin surfaces with a wide range of measuring techniques. The two main aims are: (i) to make a critical review of measuring techniques at different scales, (ii) to enlighten the different surface generation phenomena (and the corresponding scale) occurring during additive manufacturing. The effect of heat treatment on each scale of the topography is also discussed. It is found that the focus variation technique is well suited for AM surfaces. Concerning the observation of the inclined surfaces, some parameters are emphasized as good indicators of typical signatures of AM surfaces: isotropy for the weld track component, the skewness and Rsm for the staircase effect, fractal dimension for the presence of partly melted particles. The different parameters studied helps to model and understand the different surface generation phenomena aforementioned. © 2018 Elsevier Inc.

sted, utgiver, år, opplag, sider
Philadelphia, PA: Elsevier, 2018. Vol. 52, s. 249-265
Emneord [en]
3D topography characterization, As built surfaces, Form, Metal additive manufacturing, Multi scale measurements, Roughness, Selective laser melting, Staircase effect
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Identifikatorer
URN: urn:nbn:se:hh:diva-37820DOI: 10.1016/j.precisioneng.2018.01.002ISI: 000435620800024Scopus ID: 2-s2.0-85040718309OAI: oai:DiVA.org:hh-37820DiVA, id: diva2:1242769
Tilgjengelig fra: 2018-08-29 Laget: 2018-08-29 Sist oppdatert: 2018-08-29bibliografisk kontrollert

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