Metal Additive Manufacturing: A Review
TLDR
The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.Abstract:
This paper reviews the state-of-the-art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape. It enables distributed manufacturing and the productions of parts-on-demand while offering the potential to reduce cost, energy consumption, and carbon footprint. This paper explores the material science, processes, and business consideration associated with achieving these performance gains. It is concluded that a paradigm shift is required in order to fully exploit AM potential.read more
Citations
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Journal ArticleDOI
Realisation of a multi-sensor framework for process monitoring of the wire arc additive manufacturing in producing Ti-6Al-4V parts
Fangda Xu,Vimal Dhokia,Paul A. Colegrove,Anthony R. McAndrew,Stewart W. Williams,Andrew Henstridge,Stephen T. Newman +6 more
TL;DR: The authors provide a new signal process technique to acquire accurate voltage and current signal without random noises thereby significantly improving the quality of WAAM manufacturing.
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Uncertainty Quantification in Metallic Additive Manufacturing Through Physics-Informed Data-Driven Modeling
Zhuo Wang,Pengwei Liu,Pengwei Liu,Yanzhou Ji,Sankaran Mahadevan,Mark F. Horstemeyer,Zhen Hu,Lei Chen,Lei Chen,Long Qing Chen +9 more
TL;DR: In this article, a data-driven modeling framework for comprehensive uncertainty quantification of metal-based additive manufacturing (AM) processes is presented, in which multilevel datadriven surrogate models are constructed based on extensive computational data obtained by multiscale multiphysics AM models.
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Application of Direct Metal Laser Sintering to Waveguide-Based Passive Microwave Components, Antennas, and Antenna Arrays
TL;DR: The advent and the maturing of the DMLS technology may revive the fortunes of waveguide-based components and antennas as designs that are previously difficult to fabricate can be now easily handled.
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Quality part production via multi-laser additive manufacturing
TL;DR: In this paper, the effects of using multiple moving energy sources on sintered part integrity, as well as the transferability between process parameters developed for L-PBF and ML PBF, remains unknown.
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A statistical method for build orientation determination in additive manufacturing
TL;DR: A new statistical method is introduced to develop fast automatic decision support tools for additive manufacturing build orientation determination, which provides engineers a new efficient decision-making tool to rapidly determine the optimal build orientation for complex and freeform CAD models.
References
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Journal ArticleDOI
As-Fabricated and Heat-Treated Microstructures of the Ti-6Al-4V Alloy Processed by Selective Laser Melting
TL;DR: In this paper, the authors presented the various types of microstructure of the Ti-6Al-4V alloy after post-fabrication heat treatments below or above the β transus.
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Microstructure and Mechanical Properties of Wire and Arc Additive Manufactured Ti-6Al-4V
TL;DR: In this paper, the macrostructure, microstructure and mechanical properties of a Ti-6Al-4V alloy after WAAM deposition have been investigated, and the average yield and ultimate tensile strengths of the as-deposited material were found to be slightly lower than those for a forged Ti- 6Al 4V bar (MIL-T 9047), however, the ductility was similar and the mean fatigue life was significantly higher.
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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.
Journal ArticleDOI
Environmental aspects of laser-based and conventional tool and die manufacturing
TL;DR: In this paper, the authors investigated three case studies to reveal the extent to which DMD-based manufacturing of molds and dies can currently achieve reduced environmental emissions and energy consumption relative to conventional manufacturing pathways.
Journal ArticleDOI
The laser additive manufacture of Ti-6Al-4V
P. A. Kobryn,S. L. Semiatin +1 more
TL;DR: In this paper, the relationship between LAM processing parameters and microstructure in as-deposited Ti-6Al-4V was investigated, and the results presented in this paper provide a first look at the relationships between the two parameters.