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
Machinability of 3D printed metallic materials fabricated by selective laser melting and electron beam melting: A review
TL;DR: In this article , the machinability of 3D printed metallic parts fabricated by Selective Laser Melting (SLM) and Electron Beam Melting(EBM) technologies was investigated.
Journal ArticleDOI
Influence of printing parameters on structures, mechanical properties and surface characterization of aluminium alloy manufactured using selective laser melting
TL;DR: In this paper, the effects of support structures, building direction and post-processing on mechanical properties, surface roughness and microscopic analysis of parts printed by selective laser melting (SLM) was investigated.
Journal ArticleDOI
Modeling and prediction of surface roughness and dimensional accuracy in SLS 3D printing of PVA/CB composite using the central composite design
TL;DR: In this article , the effects of SLS main process variables and their interactions on surface roughness and dimensional accuracy were investigated using a desktop SLS 3D printer, where the combination of polyvinyl alcohol (PVA) and carbon black (CB) powder was used to print the composite specimens.
Journal ArticleDOI
Measuring procedures for surface evaluation of additively manufactured powder bed-based polymer and metal parts
M. Heinl,Sandra Greiner,Katrin Wudy,Christoph R. Pobel,Michael Rasch,Florian Huber,Thomas Papke,Marion Merklein,Michael Schmidt,Carolin Körner,Dietmar Drummer,Tino Hausotte +11 more
Book ChapterDOI
Postprocessing of Additively Manufactured Metal Parts
TL;DR: In this paper, postprocessing techniques for machining, finishing, heat treating, and deburring used to remove additive manufacturing (AM) metallic workpieces from a base plate and subsequent techniques to enhance printed workpieces.
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.