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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The metallurgy and processing science of metal additive manufacturing
TL;DR: In this article, a review of additive manufacturing (AM) techniques for producing metal parts are explored, with a focus on the science of metal AM: processing defects, heat transfer, solidification, solid-state precipitation, mechanical properties and post-processing metallurgy.
Journal ArticleDOI
Design for additive manufacturing: trends, opportunities, considerations, and constraints
Mary Kathryn Thompson,Giovanni Moroni,Thomas H.J. Vaneker,Georges M. Fadel,R. Ian Campbell,Ian Gibson,Alain Bernard,Joachim Schulz,Patricia Graf,Bhrigu Ahuja,Filomeno Martina +10 more
TL;DR: In the case of aircraft components, AM technology enables low-volume manufacturing, easy integration of design changes and, at least as importantly, piece part reductions to greatly simplify product assembly.
Journal ArticleDOI
Additive manufacturing and sustainability: an exploratory study of the advantages and challenges
Simon Ford,Mélanie Despeisse +1 more
TL;DR: In this paper, the role of additive manufacturing process technology on industrial sustainability is investigated and the consequences of adopting this novel production technology are not well understood and an exploratory study draws on publically available data to provide insights into the impacts of additive additive manufacturing on sustainability.
Journal ArticleDOI
A global sustainability perspective on 3D printing technologies
TL;DR: In this paper, the authors presented a comprehensive assessment of 3D printing from a global sustainability perspective and quantified changes in life cycle costs, energy and CO 2 emissions globally by 2025.
Journal ArticleDOI
Making sense of 3-D printing: Creating a map of additive manufacturing products and services
Brett Conner,Guha Manogharan,Ashley Nicole Martof,Lauren M. Rodomsky,Caitlyn Marie Rodomsky,Dakesha C. Jordan,James W. Limperos +6 more
TL;DR: In this paper, a reference system is presented to describe the key attributes of a product from a manufacturability stand-point: complexity, customization, and production volume, and a discrete set of customization levels are also introduced.
References
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Journal ArticleDOI
Implications on design of rapid manufacturing
TL;DR: In this article, the introduction of rapid manufacturing will have a number of effects on design, such as reentrant shapes without complicating manufacturing, no draft angles, variable wall thickness, no split lines and fewer parts, leading to easier assembly and lower stock.
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3D Printing technique applied to Rapid Casting
TL;DR: In this paper, the feasibility and dimensional accuracy of two rapid casting (RC) solutions based on 3D printing technology were evaluated, namely investment casting starting from 3D printed starch patterns and the ZCast process for the production of cavities for light-alloys castings.
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Benchmarking of Rapid Prototyping Techniques in Terms of Dimensional Accuracy and Surface Finish
TL;DR: In this article, a new technique of checking the machine quality of a Rapid Prototyping (RP) workpiece according to the ANSI-ISO standards is presented, and the surface of RP model were observed by SEM microscope.
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Redesign and cost estimation of rapid manufactured plastic parts
TL;DR: In this article, the authors highlight how rapid manufacturing (RM) of plastic parts combined with part redesign could have positive repercussion on cost saving, and compare the geometric and economic differences between IM and RM.
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Rapid prototyping for direct manufacture
Neil Hopkinson,Phill Dickens +1 more
TL;DR: In this article, a cost analysis performed by De Montfort University and Delphi Automotive Systems (France) along with expert opinions generated from an Internet based conference has helped to identify the potential future for rapid manufacturing.