Journal ArticleDOI
Economics of additive manufacturing for end-usable metal parts
Eleonora Atzeni,Alessandro Salmi +1 more
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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
Electrical discharge machining of electron beam melting formed shrouded blisk
TL;DR: In this paper, an electron beam melting (EBM) and electrical discharge machining (EDM) combined method for shrouded blisk manufacturing was presented, where EBM was used to generate the near-net forming blank of the shroud blisk, and EDM was responsible for finish machining.
Journal ArticleDOI
Powder transport model for laser cladding by lateral powder feeding: I. Powder flow field with cylindrical distribution
TL;DR: In this paper, a powder transport model for flow field with cylindrical distribution and a mathematical expression of powder transport ratio is proposed, and the cross-sectional area of the clad layer is calculated by the model.
Journal ArticleDOI
Tribological Behavior of Additively Manufactured Metal Components
TL;DR: In this article , a review of the existing literature with an emphasis on the development of advanced materials for AM applications as well as the optimization of the resulting surface quality via post-processing is presented.
Book ChapterDOI
Is 3D Printing an Enabling Technology for Manufacturing Reshoring
TL;DR: In this paper, the authors verify the hypothesis that AMTs may act as an enabling technology for manufacturing reshoring, i.e., repatriation of (in/outourced) production activities earlier offshored.
Journal ArticleDOI
Machining induced residual stresses in AlSi10Mg component produced by Laser Powder Bed Fusion (L-PBF)
Gabriele Piscopo,Eleonora Atzeni,Flaviana Calignano,Manuela Galati,Luca Iuliano,Paolo Minetola,Alessandro Salmi +6 more
TL;DR: In this paper, the effect of machining operations on the residual stress state of an AlSi10Mg component produced by L-PBF is investigated by means of the semi destructive hole-drilling method.
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.