Journal ArticleDOI
The status, challenges, and future of additive manufacturing in engineering
Wei Gao,Yunbo Zhang,Devarajan Ramanujan,Karthik Ramani,Yong Chen,Christopher B. Williams,Charlie C. L. Wang,Yung C. Shin,Song Zhang,Pablo D. Zavattieri +9 more
TLDR
Future directions such as the "print-it-all" paradigm, that have the potential to re-imagine current research and spawn completely new avenues for exploration are pointed out.Abstract:
Additive manufacturing (AM) is poised to bring about a revolution in the way products are designed, manufactured, and distributed to end users. This technology has gained significant academic as well as industry interest due to its ability to create complex geometries with customizable material properties. AM has also inspired the development of the maker movement by democratizing design and manufacturing. Due to the rapid proliferation of a wide variety of technologies associated with AM, there is a lack of a comprehensive set of design principles, manufacturing guidelines, and standardization of best practices. These challenges are compounded by the fact that advancements in multiple technologies (for example materials processing, topology optimization) generate a "positive feedback loop" effect in advancing AM. In order to advance research interest and investment in AM technologies, some fundamental questions and trends about the dependencies existing in these avenues need highlighting. The goal of our review paper is to organize this body of knowledge surrounding AM, and present current barriers, findings, and future trends significantly to the researchers. We also discuss fundamental attributes of AM processes, evolution of the AM industry, and the affordances enabled by the emergence of AM in a variety of areas such as geometry processing, material design, and education. We conclude our paper by pointing out future directions such as the "print-it-all" paradigm, that have the potential to re-imagine current research and spawn completely new avenues for exploration. The fundamental attributes and challenges/barriers of Additive Manufacturing (AM).The evolution of research on AM with a focus on engineering capabilities.The affordances enabled by AM such as geometry, material and tools design.The developments in industry, intellectual property, and education-related aspects.The important future trends of AM technologies.read more
Citations
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Journal ArticleDOI
A review of the wire arc additive manufacturing of metals: properties, defects and quality improvement
TL;DR: In this paper, the authors review the emerging research on wire arc additive manufacturing (WAAM) techniques and the commonly used metallic feedstock materials, and also provide a comprehensive over view of the metallurgical and material properties of the deposited parts.
Journal ArticleDOI
Effect of Selective Laser Melting (SLM) process parameters on microstructure and mechanical properties of 316L austenitic stainless steel
TL;DR: In this paper, microstructure, defect formation and mechanical properties of AISI 316L components are investigated according to the process parameters used for their fabrication, and a first experimental campaign establishes process parameters guaranteeing a density greater than 98% Samples for microstructural and mechanical characterization are then produced based on these results, varying laser power from 100 W to 150 W, hatch space from 005 mm to 007 mm and orientation from 45° to 90°.
Journal ArticleDOI
Current and future trends in topology optimization for additive manufacturing
Jikai Liu,Andrew T. Gaynor,Shikui Chen,Zhan Kang,Krishnan Suresh,Akihiro Takezawa,Lei Li,Junji Kato,Jinyuan Tang,Charlie C. L. Wang,Lin Cheng,Xuan Liang,Albert C. To +12 more
TL;DR: The motivation of this perspective paper is to summarize the state-of-art topology optimization methods for a variety of AM topics and the hope is to inspire both researchers and engineers to meet the challenges with innovative solutions.
Journal ArticleDOI
Corrosion and surface modification on biocompatible metals: A review.
R.I.M. Asri,Wan Sharuzi Wan Harun,Mahendran Samykano,Nurul Akmal Che Lah,Saiful Anwar Che Ghani,Faris Tarlochan,Muhammad Rafi Raza +6 more
TL;DR: This article focuses on biocompatible metals which favorably used as implants such as 316L stainless steel, cobalt-chromium-molybdenum, pure titanium and titanium-based alloys, and the mechanism to improve it.
Journal ArticleDOI
Biofabrication: a guide to technology and terminology
Lorenzo Moroni,Thomas Boland,Jason A. Burdick,Carmelo De Maria,Brian Derby,Gabor Forgacs,Juergen Groll,Qing Li,Jos Malda,Vladimir Mironov,Carlos Mota,Makoto Nakamura,Wenmiao Shu,Shoji Takeuchi,Tim B. F. Woodfield,Tao Xu,James J. Yoo,Giovanni Vozzi +17 more
TL;DR: The objective is to provide a guide to the terminology for different technologies in the field which may serve as a reference for the biofabrication community.
References
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TL;DR: Using a practical approach, this book discusses two-level factorial and fractional factorial designs, several aspects of empirical modeling with regression techniques, focusing on response surface methodology, mixture experiments and robust design techniques.
Journal ArticleDOI
Generating optimal topologies in structural design using a homogenization method
Martin P. Bendsøe,Noboru Kikuchi +1 more
TL;DR: In this article, the authors present a methodology for optimal shape design based on homogenization, which is related to modern production techniques and consists of computing the optimal distribution in space of an anisotropic material that is constructed by introducing an infimum of periodically distributed small holes in a given homogeneous, i.i.
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.
Journal ArticleDOI
A level set method for structural topology optimization
TL;DR: A new approach to structural topology optimization that represents the structural boundary by a level set model that is embedded in a scalar function of a higher dimension that demonstrates outstanding flexibility of handling topological changes, fidelity of boundary representation and degree of automation.
Light field photography with a hand-held plenoptic camera
TL;DR: The plenoptic camera as mentioned in this paper uses a microlens array between the sensor and the main lens to measure the total amount of light deposited at that location, but how much light arrives along each ray.