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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Journal ArticleDOI
Additive manufacturing technology: mapping social impacts
Florinda Matos,Celeste Jacinto +1 more
TL;DR: In this article, a literature review with computer-aided content analysis to search for keywords related to social impacts was used to identify and count the relevant keywords in academic documents associated with AM social impacts.
Journal ArticleDOI
Evaluation of the impact behaviour of AlSi10Mg alloy produced using laser additive manufacturing
Luca Girelli,Maverick Giovagnoli,Marialaura Tocci,Annalisa Pola,Annalisa Fortini,Mattia Merlin,Giovina Marina La Vecchia +6 more
TL;DR: In this article, the impact strength tests were carried out on Charpy AlSi10Mg samples produced using laser additive manufacturing in order to accurately investigate the influence of building directions, heat treatment parameters and also the effect of Hot Isostatic Pressing (HIP) on their impact properties.
Journal ArticleDOI
Implications of Additive Manufacturing for Spare Parts Inventory
SirichakwalIssariya,ConnerBrett +1 more
TL;DR: In this paper, an approximate one-for-one inventory model for spare parts is used to analyze how inventory-related benefits can be derived from reductions in holding cost and production lead time.
Journal ArticleDOI
Flexural Strength of 3D-Printing Resin Materials for Provisional Fixed Dental Prostheses
TL;DR: It is suggested that provisional restorations fabricated by DLP and SLA technologies provide adequate flexural strength for dental use.
Journal ArticleDOI
Microstructural Development and Technical Challenges in Laser Additive Manufacturing: Case Study with a 316L Industrial Part
TL;DR: In this article, an air vent was selected for its thin-walled, hollow, and variable cross section, and limited size, and the studied air vents, randomly selected from a qualification batch, were fabricated out of 316L stainless steel using a 4kW fiber laser powder-fed additive manufacturing system, referred to as construction laser additive direct (CLAD).
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.