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:Â
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
Effect of Process Parameters on Powder Bed Fusion Maraging Steel 300: A Review
B. S. Rao,Thella Babu Rao +1 more
Book ChapterDOI
An Analysis on the Advanced Research in Additive Manufacturing
TL;DR: The review of several research papers provides an idea of emerging solid-state surface coating process based on friction surfacing to improve properties and grain structure of the coating and substrate.
Journal ArticleDOI
Linking Powder Properties, Printing Parameters, Post-Processing Methods, and Fatigue Properties in Additive Manufacturing of AlSi10Mg
Ritam Pal,Amrita Basak +1 more
TL;DR: In this article , the as-deposited and heat-treated microstructures of AlSi10Mg specimens fabricated by laser powder bed fusion (L-PBF) are discussed.
Journal ArticleDOI
Prediction and optimization of dimensional accuracy of inclined structures fabricated by laser powder bed fusion
Luo Zhang,Yetao Li,Hai Hong Zhu +2 more
TL;DR: In this article , the dimensional accuracy of inclined structures formed through laser powder bed fusion (LPBF) was predicted by a developed theoretical model, which includes the dimensions in thickness direction and in length direction.
Journal ArticleDOI
Numerical studies of metal particle behaviors inside the selective laser melting (SLM) chamber through computational fluid dynamics (CFD)
TL;DR: In this article, computational fluid dynamics (CFD) with the application of the Taguchi method was employed to investigate the flow field across the working chamber, with the variations in the geometries of the blowing nozzle, the widths of the suction tunnel, the SUction-to-plane distances, and the Reynolds numbers of blowing flow.
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.