Journal ArticleDOI
Influence of process parameters on surface roughness of aluminum parts produced by DMLS.
TLDR
In this paper, a model based on an L18 orthogonal array of Taguchi design was created to perform experimental planning and the upper surfaces of the samples were analyzed before and after shot peening.Abstract:
Direct metal laser sintering (DMLS) is an additive manufacturing technique for the fabrication of near net-shaped parts directly from computer-aided design data by melting together different layers with the help of a laser source. This paper presents an investigation of the surface roughness of aluminum samples produced by DMLS. A model based on an L18 orthogonal array of Taguchi design was created to perform experimental planning. Some input parameters, namely laser power, scan speed, and hatching distance were selected for the investigation. The upper surfaces of the samples were analyzed before and after shot peening. The morphology was analyzed by means of field emission scanning electron microscope. Scan speed was found to have the greatest influence on the surface roughness. Further, shot peening can effectively reduce the surface roughness.read more
Citations
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Journal ArticleDOI
Critical assessment of the impact of process parameters on vertical roughness and hardness of thin walls of AlSi10Mg processed by laser powder bed fusion
Olivier Poncelet,Matthieu Marteleur,C. van der Rest,Olivier Rigo,Jérôme Adrien,Sylvain Dancette,P.J. Jacques,Aude Simar +7 more
TL;DR: In this article, the impact of prominent process parameters in laser powder bed fusion (L-PBF) technique, also called selective laser melting (SLM), on relevant properties of AlSi10Mg such as surface roughness and hardness were scrutinized.
Journal ArticleDOI
Effect of laser remelting on surface roughness and microstructure of AlSi10Mg selective laser melting manufactured parts
TL;DR: In this paper, the effect of process parameters on the surface morphology and alloy microstructure has been analyzed, and the obtained results highlighted that the remelting process allows to improve surface morphology but it affects the subsurface defect formation.
Journal ArticleDOI
Fatigue strength assessment of additively manufactured metallic structures considering bulk and surface layer characteristics
Wolfgang Schneller,Martin Leitner,Sebastian Pomberger,Florian Grün,S. Leuders,T. Pfeifer,Oliver Jantschner +6 more
TL;DR: In this article, the effect of surface texture on the fatigue strength of additively manufactured metallic bulk materials is considered. But the authors do not consider the effects of post-treatment surface texture.
Journal ArticleDOI
Characterisation and correlation of areal surface texture with processing parameters and porosity of High Speed Sintered parts
TL;DR: In this article, the surface topography of high speed sintered parts produced using a range of different energy-related process parameters including sinter speed, lamp power and ink grey level was investigated.
Journal ArticleDOI
Design for additive manufacturing (DfAM) methodologies: a proposal to foster the design of microwave waveguide components
Mathieu François,Frédéric Segonds,Frédéric Segonds,Mickaël Rivette,Simon Turpault,Patrice Peyre +5 more
TL;DR: It is necessary to guide designers throughout the development of a product by drawing their attention to the different steps they must consider in order to design an additive manufactured optimised part.
References
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Book
Laser Material Processing
TL;DR: In this paper, the effect of reflectivity of the surface, when a pure, monochromatic laser (6) is used, is remedied by the simultaneous application of a relatively shorter wavelength beam (1).
Journal ArticleDOI
Selective laser melting of iron-based powder
Jean-Pierre Kruth,Ludo Froyen,J. Van Vaerenbergh,Peter Mercelis,Marleen Rombouts,Bert Lauwers +5 more
TL;DR: In this paper, a mixture of different types of particles (Fe, Ni, Cu and Fe3P) specially developed for selective laser sintering (SLS) is described.
Journal ArticleDOI
Consolidation phenomena in laser and powder-bed based layered manufacturing
TL;DR: In this article, the authors describe which types of laser-induced consolidation can be applied to what type of material, and demonstrate that although SLS/SLM can process polymers, metals, ceramics and composites, quite some limitations and problems cause the palette of applicable materials still to be limited.
BookDOI
Rapid manufacturing : an industrial revolution for the digital age
TL;DR: In this paper, the authors present a discussion of the potential of rapid manufacturing in the automotive industry and present a case study of how to modify a garden fork handle in order to make it more efficient.