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
Additive manufacturing of metallic components – Process, structure and properties
Tarasankar Debroy,Huiliang Wei,J.S. Zuback,T. Mukherjee,John W. Elmer,John O. Milewski,Allison M. Beese,Alexander E. Wilson-Heid,Amitava De,Wei Zhang +9 more
TL;DR: A review of the emerging research on additive manufacturing of metallic materials is provided in this article, which provides a comprehensive overview of the physical processes and the underlying science of metallurgical structure and properties of the deposited parts.
Journal ArticleDOI
Review of selective laser melting : materials and applications
Chor Yen Yap,Chee Kai Chua,Zhili Dong,Zhong Hong Liu,Dan Qing Zhang,Loong Ee Loh,Swee Leong Sing +6 more
TL;DR: Selective laser melting (SLM) is a particular rapid prototyping, 3D printing, or additive manufacturing (AM) technique designed to use high power-density laser to melt and fuse metallic powders as mentioned in this paper.
Journal ArticleDOI
Surface texture metrology for metal additive manufacturing: a review
TL;DR: A comprehensive analysis of surface texture metrology for metal additive manufacturing has been performed in this paper, where the results of this analysis are divided into sections that address specific areas of interest: industrial domain; additive manufacturing processes and materials; types of surface investigated; surface measurement technology and surface texture characterisation.
Journal ArticleDOI
Influence of the particle size distribution on surface quality and mechanical properties in AM steel parts
TL;DR: In this paper, the effect of three different powder granulations on the resulting part density, surface quality and mechanical properties of the materials produced was investigated, and the scan surface quality was compared with two layer thicknesses of 30 and 45μm.
Journal ArticleDOI
Overview on Additive Manufacturing Technologies
Flaviana Calignano,Diego Manfredi,Elisa Paola Ambrosio,Sara Biamino,Mariangela Lombardi,Eleonora Atzeni,Alessandro Salmi,Paolo Minetola,Luca Iuliano,Paolo Fino +9 more
TL;DR: This paper provides an overview on the main additive manufacturing/3D printing technologies suitable for many satellite applications and, in particular, radio-frequency components.
References
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Journal ArticleDOI
A generic algorithm for a best part orientation system for complex parts in rapid prototyping
TL;DR: A generic mathematical algorithm to determine the best part orientation for building a part in a layer-by-layer rapid prototyping (RP) system that works on the principle of computing the volumetric error in a part at different orientations and then determining the best orientation based on the minimum VE in the part.
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Influence of building strategies on the accuracy of parts in selective laser sintering
TL;DR: In this article, the shrinkage behavior of calibration parts was investigated and the variations in error patterns due to different strategies in building the calibration part have been reported, which are likely to make the process of compensation efficient and hence aid in improving the accuracy of the process.
Journal ArticleDOI
An experimental design approach to selective laser sintering of low carbon steel
TL;DR: In this paper, the effects of variation of sintering parameters: layer thickness and hatching distance (side step) on the density, hardness and porosity of the sintered products are investigated.
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A study on shrinkage compensation of the SLS process by using the Taguchi method
TL;DR: In this article, the authors proposed the test pieces of the X, Y, and Z axes to compensate for the distortion of the SLS parts resulting from the phase changes during the sintering process.
Journal ArticleDOI
Microstructuring by selective laser sintering of metallic powder
TL;DR: In this paper, both one-component solid-state laser sintering and two-metal liquid-phase selective laser Sintering of metallic powders with high and low melting points are described.