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
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Book ChapterDOI
Challenges of Scale Modelling Material Behaviour of Additive-Manufactured Nodes
Nicholas Williams,Daniel Prohasky,Jane Burry,Kristof Crolla,Martin Leary,Milan Brandt,Mike Xie,Hamed Seifi +7 more
TL;DR: In this paper, a prototype frame structure with linear members connected by nodes of unique shapes is presented and reflected upon early prototypes for integrating AM in a construction application, through the design of a prototype Frame Structure with Linear Members connected by Nodes of Unique shapes.
Journal ArticleDOI
Additive manufacturing of conductive and high-strength epoxy-nanoclay-carbon nanotube composites
TL;DR: In this article, conductive epoxy-nanoclay-CNT nanocomposite structures were fabricated by direct-write 3D printing, and the results show the promise of this ink material and printing method for various applications such as aerospace structures and electronics.
Journal ArticleDOI
A framework for manufacturing execution system deployment in an advanced additive manufacturing process
TL;DR: In this article, a framework for the deployment of shop-floor data, acquired through a monitoring system, in the design phase is presented: hence, MES should cooperate with design for additive manufacturing (DFAM), a set of methods and tools helpful to design a product and its manufacturing process taking into account AM specificities from the early design stages.
Journal ArticleDOI
A study on spectral characterization and quality detection of direct metal deposition process based on spectral diagnosis
TL;DR: In this paper, a spectrum acquisition system for direct metal deposition (DMD) was established by using fiber optic spectrometer to collect the radiation during the forming process under different process parameters.
Posted Content
The "Weighty" Manufacturing Sector: Transforming Raw Materials into Physical Goods
TL;DR: The U.S. manufacturing sector encompasses a diverse set of industries that are involved in the transformation of raw materials into physical goods as discussed by the authors, including animal processing, aerospace products, and printing (on various materials including textile, metal, plastics); the top sources of revenue are petroleum refineries and automotive; and the top source of R&D spending is pharmaceuticals.
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.