Journal ArticleDOI
Economics of additive manufacturing for end-usable metal parts
Eleonora Atzeni,Alessandro Salmi +1 more
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TLDR
In this paper, a comparison between two different technologies for metal part fabrication, the traditional high-pressure die-casting and the direct metal laser sintering additive technique, is done with consideration of both the geometric possibilities of AM and the economic point of view.Abstract:
Additive manufacturing (AM) of metal parts combined with part redesign has a positive repercussion on cost saving. In fact, a remarkable cost reduction can be obtained if the component shape is modified to exploit AM potentialities. This paper deals with the evaluation of the production volume for which AM techniques result competitive with respect to conventional processes for the production of end-usable metal parts. For this purpose, a comparison between two different technologies for metal part fabrication, the traditional high-pressure die-casting and the direct metal laser sintering additive technique, is done with consideration of both the geometric possibilities of AM and the economic point of view. A design for additive manufacturing approach is adopted. Costs models of both processes are identified and then applied to an aeronautical component selected as case study. This research evidences that currently additive techniques can be economically convenient and competitive to traditional processes for small to medium batch production of metal parts.read more
Citations
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Journal ArticleDOI
Processability of a Hot Work Tool Steel Powder Mixture in Laser-Based Powder Bed Fusion
Nick Hantke,Felix Großwendt,Anna Luise Strauch,Rainer Fechte-Heinen,Arne Röttger,Werner Theisen,Sebastian Weber,Jan T. Sehrt +7 more
TL;DR: In this paper , a hot work tool steel was used for crack-free PBF-LB/M-fabrication without any preheating as well as an alternative alloying strategy which implies the individual admixing of low-cost aspherical elemental powders and ferroalloy particles with gas-atomized pure iron powder.
Dissertation
Topology optimization for additive manufacturing
TL;DR: This thesis examined the workflow to include topology optimization in the process of design for AM by minimizing the mass of two parts of an electric scooter, neck and platform and proved that load conditions may directly affect the final result and product.
Journal ArticleDOI
Resource-efficient process chains to manufacture patient-specific prosthetic fingers
TL;DR: In this paper, the authors developed a new resource-efficient process chain for the manufacturing of prosthetic fingers using additive manufacturing technologies, and compared it with the traditional (Sculptor) process chain.
Journal ArticleDOI
Study of the complementary usages of selective laser sintering during the high volume production of plastic parts
TL;DR: In this paper, a comparison between selective laser sintering and injection molding technology for the production of small batches of plastic products is presented based on analysing the time-cost efficiencies of each manufacturing process regarding the size of the series for the selected product sample.
Journal ArticleDOI
Not all technological change is equal: how the separability of tasks mediates the effect of technology change on skill demand
TL;DR: In this article, the authors measure the labor-demand effects of two simultaneous forms of technological change (automation of production processes and consolidation of parts) on workers' skill requirements.
References
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Book
Additive Manufacturing Technologies: Rapid Prototyping to Direct Digital Manufacturing
TL;DR: Gibson et al. as discussed by the authors presented a comprehensive overview of additive manufacturing technologies plus descriptions of support technologies like software systems and post-processing approaches, and provided systematic solutions for process selection and design for AM Additive Manufacturing Technologies: Rapid Prototyping to Direct Digital Manufacturing.
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.
Journal ArticleDOI
Rapid Manufacturing of Metal Components by Laser Forming
TL;DR: In this article, the main driving force of rapid prototyping or layer manufacturing techniques changed from fabrication of prototypes to rapid tooling (RT) and rapid manufacturing (RM), and nowadays, the direct fabrication of functional or structural end-use products made by layer manufacturing methods, i.e. RM, is the main trend.
Book ChapterDOI
Design for Additive Manufacturing
TL;DR: In this article, the capabilities of additive manufacturing technologies provide an opportunity to rethink DFM to take advantage of the unique capabilities of these technologies, and several companies are now using AM technologies for production manufacturing.
Journal ArticleDOI
Cost estimation for rapid manufacturing - laser sintering production for low to medium volumes:
TL;DR: In this article, a cost model for laser sintering is proposed, which leads to graph profiles that are typical for layer-by-layer manufacturing processes, and the evolution of cost models and the indirect cost significance in modern costing representation is shown.