scholarly journals Overview of Current Additive Manufacturing Technologies and Selected Applications

2012 ◽  
Vol 95 (3) ◽  
pp. 255-282 ◽  
Author(s):  
Timothy J. Horn ◽  
Ola L. A. Harrysson
Keyword(s):  
Additive Manufacturing ◽  
State Of The Art ◽  
Three Dimensional ◽  
New Paradigm ◽  
Three Dimensional Printing ◽  
The Past ◽  
Key Technologies ◽  
End Use ◽  
Manufacturing Technologies ◽  
Dimensional Printing

Three-dimensional printing or rapid prototyping are processes by which components are fabricated directly from computer models by selectively curing, depositing or consolidating materials in successive layers. These technologies have traditionally been limited to the fabrication of models suitable for product visualization but, over the past decade, have quickly developed into a new paradigm called additive manufacturing. We are now beginning to see additive manufacturing used for the fabrication of a range of functional end use components. In this review, we briefly discuss the evolution of additive manufacturing from its roots in accelerating product development to its proliferation into a variety of fields. Here, we focus on some of the key technologies that are advancing additive manufacturing and present some state of the art applications.

A Functional Classification Framework for the Conceptual Design of Additive Manufacturing Technologies

2011 ◽  
Vol 133 (12) ◽  
Author(s):  
Christopher B. Williams ◽  
Farrokh Mistree ◽  
David W. Rosen
Keyword(s):  
Additive Manufacturing ◽  
Conceptual Design ◽  
Design Methodology ◽  
Three Dimensional ◽  
New Classification ◽  
Metal Artifacts ◽  
Three Dimensional Printing ◽  
Classification Framework ◽  
Manufacturing Technologies ◽  
Dimensional Printing

Many different additive manufacturing (AM) technologies enable the realization of prototypes and fully-functional artifacts. Although very different in solution principle and embodiment, significant functional commonality exists among the technologies. This commonality affords the authors an opportunity to propose a new classification framework for additive manufacturing technologies. Specifically, by following the systematic abstraction approach proposed by the design methodology of Pahl and Beitz, the authors first identify the working principles of each AM process. A morphological matrix is then employed to functionally present these principles such that commonalities between processes can be identified. In addition to using it as a means of classifying existing processes, the authors present the framework as a tool to aid a designer in the conceptual design of new additive manufacturing technologies. The authors close the paper with an example of such an implementation; specifically, the conceptual design of a novel means of obtaining metal artifacts from three-dimensional printing.

scholarly journals Challenges of additive manufacturing technologies from an optimisation perspective

2015 ◽  
Vol 6 ◽  
pp. A9 ◽  
Author(s):  
Sofiane Guessasma ◽  
Weihong Zhang ◽  
Jihong Zhu ◽  
Sofiane Belhabib ◽  
Hedi Nouri
Keyword(s):  
Additive Manufacturing ◽  
Optimal Design ◽  
3D Imaging ◽  
Review Paper ◽  
Structural Information ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Manufacturing Technologies ◽  
Dimensional Printing

Three-dimensional printing offers varied possibilities of design that can be bridged to optimisation tools. In this review paper, a critical opinion on optimal design is delivered to show limits, benefits and ways of improvement in additive manufacturing. This review emphasises on design constrains related to additive manufacturing and differences that may appear between virtual and real design. These differences are explored based on 3D imaging techniques that are intended to show defect related processing. Guidelines of safe use of the term “optimal design” are derived based on 3D structural information.

scholarly journals Sanded FEP Films as Interface Layers in Inverted Vat Polymerization Additive Manufacturing

2020 ◽  
Author(s):  
Hironori Kondo
Keyword(s):  
Additive Manufacturing ◽  
Three Dimensional ◽  
Equilibrium Contact Angle ◽  
Printing Process ◽  
Three Dimensional Printing ◽  
Design Iteration ◽  
Manufacturing Technologies ◽  
Interface Layers ◽  
Dimensional Printing ◽  
Insight Into

Contemporary three-dimensional printing, also referred to as additive manufacturing, has been popular for rapid prototyping due to its capacity for relatively facile design iteration and low investment per prototype. Object fabrication speeds, however, have lagged behind other manufacturing technologies, and existing approaches for accelerating the printing process are limited in their applicability and accessibility. This work explores the viability of using sanded FEP films as resin-irradiation window interface layers in inverted vat polymerization additive manufacturing for reducing layer separation requirements and expediting the printing process. The effects of sanding FEP films on the equilibrium contact angle of commercial vat polymerization resin on the FEP films are investigated, and the forces required to separate cured resin from the FEP films in a simulated inverted vat polymerization setup are explored. Scanning electron microscopy is used to reveal the effects of wear on these sanded surfaces. The findings of this work offer insight into methods for dramatically accelerating existing additive manufacturing and vat polymerization systems.

Facing the challenges of the food industry: Might additive manufacturing be the answer?

2018 ◽  
Vol 233 (8) ◽  
pp. 1902-1906 ◽  
Author(s):  
Antonio Sartal ◽  
Diego Carou ◽  
Rubén Dorado-Vicente ◽  
Lorenzo Mandayo
Keyword(s):  
Additive Manufacturing ◽  
Industry 4.0 ◽  
Food Industry ◽  
Information Technologies ◽  
Three Dimensional ◽  
Sustainable Competitive Advantage ◽  
Three Dimensional Printing ◽  
Main Driver ◽  
The One ◽  
Dimensional Printing

Our research explores how additive manufacturing can support the food industry in facing its current global challenges. Although information technologies are usually highlighted as the main driver of the Industry 4.0 concept, which was first introduced during the Hannover Fair event in 2011, we posit that additive manufacturing can be the true generator of a sustainable competitive advantage in this sector. This evidence stems from a case study in a plant of one of the world’s largest fishing multinational companies. Our results show how, through robotic claw optimization using three-dimensional printing, we not only reduce the manufacturing costs but also increase the flexibility of the line and reduce time to market. On the one hand, our findings should encourage managers to test this technology at their facilities; on the other hand, policymakers should promote the adoption of additive manufacturing, highlighting the potential of this technology within the Industry 4.0 context.

scholarly journals MODERN THREE-DIMENSIONAL TECHNOLOGY AND FACTORS LIMITING THEIR

2016 ◽  
Vol 1 (12) ◽  
pp. 22-30 ◽  
Author(s):  
Кучерова ◽  
Anna Kucherova ◽  
Дребезгова ◽  
Mariya Drebezgova ◽  
Чернышева ◽  
...  
Keyword(s):  
Setting Time ◽  
Three Dimensional ◽  
High Strength ◽  
Improve Performance ◽  
Three Dimensional Printing ◽  
Reducing Costs ◽  
Manufacturing Technologies ◽  
Strength Uniformity ◽  
Dimensional Printing ◽  
Strength Of Adhesion

The article presents information on the modern three-dimensional technologies and the main factors constraining their development. In recent decades there has been revolutionary new approaches to construction, in particular three-dimensional printing technology construction features, allowing you to abandon the traditional formwork, which significantly reduces costs and allows to create various architectural forms of buildings and structures. For the development of construction of next generation technologies requires the development of new materials with desired controlled properties: quick setting time, high strength, uniformity and strength of adhesion between the various layers. The use of additive manufacturing technologies for the construction of buildings and structures will significantly reduce costs by reducing costs of materials and improve performance, discover new creative approaches to create a variety of architectural shape of our cities.

scholarly journals Main Clinical Use of Additive Manufacturing (Three-Dimensional Printing) in Finland Restricted to the Head and Neck Area in 2016–2017

2019 ◽  
Vol 109 (2) ◽  
pp. 166-173 ◽  
Author(s):  
A.B.V. Pettersson ◽  
M. Salmi ◽  
P. Vallittu ◽  
W. Serlo ◽  
J. Tuomi ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Patient Specific ◽  
Future Research ◽  
Imaging Data ◽  
University Hospitals ◽  
Three Dimensional Printing ◽  
Dimensional Printing ◽  
Head Area

Background and Aims: Additive manufacturing or three-dimensional printing is a novel production methodology for producing patient-specific models, medical aids, tools, and implants. However, the clinical impact of this technology is unknown. In this study, we sought to characterize the clinical adoption of medical additive manufacturing in Finland in 2016–2017. We focused on non-dental usage at university hospitals. Materials and Methods: A questionnaire containing five questions was sent by email to all operative, radiologic, and oncologic departments of all university hospitals in Finland. Respondents who reported extensive use of medical additive manufacturing were contacted with additional, personalized questions. Results: Of the 115 questionnaires sent, 58 received answers. Of the responders, 41% identified as non-users, including all general/gastrointestinal (GI) and vascular surgeons, urologists, and gynecologists; 23% identified as experimenters or previous users; and 36% identified as heavy users. Usage was concentrated around the head area by various specialties (neurosurgical, craniomaxillofacial, ear, nose and throat diseases (ENT), plastic surgery). Applications included repair of cranial vault defects and malformations, surgical oncology, trauma, and cleft palate reconstruction. Some routine usage was also reported in orthopedics. In addition to these patient-specific uses, we identified several off-the-shelf medical components that were produced by additive manufacturing, while some important patient-specific components were produced by traditional methodologies such as milling. Conclusion: During 2016–2017, medical additive manufacturing in Finland was routinely used at university hospitals for several applications in the head area. Outside of this area, usage was much less common. Future research should include all patient-specific products created by a computer-aided design/manufacture workflow from imaging data, instead of concentrating on the production methodology.

scholarly journals Three-dimensional printing, muscles, and skeleton: mechanical functions of living wood

2019 ◽  
Vol 70 (14) ◽  
pp. 3453-3466 ◽  
Author(s):  
Bernard Thibaut
Keyword(s):  
Additive Manufacturing ◽  
Field Experiments ◽  
Secondary Growth ◽  
Three Dimensional ◽  
Wood Properties ◽  
Force Generation ◽  
Three Dimensional Printing ◽  
Pipe System ◽  
External Forces ◽  
Dimensional Printing

AbstractWood is well defined as an engineering material. However, living wood in the tree is often regarded only as a passive skeleton consisting of a sophisticated pipe system for the ascent of sap and a tree-like structure made of a complex material to resist external forces. There are two other active key roles of living wood in the field of biomechanics: (i) additive manufacturing of the whole structure by cell division and expansion, and (ii) a ‘muscle’ function of living fibres or tracheids generating forces at the sapwood periphery. The living skeleton representing most of the sapwood is a mere accumulation of dead tracheids and libriform fibres after their programmed cell death. It keeps a record of the two active roles of living wood in its structure, chemical composition, and state of residual stresses. Models and field experiments define four biomechanical traits based on stem geometry and parameters of wood properties resulting from additive manufacturing and force generation. Geometric parameters resulting from primary and secondary growth play the larger role. Passive wood properties are only secondary parameters, while dissymmetric force generation is key for movement, posture control, and tree reshaping after accidents.

A Functional Classification Framework for the Conceptual Design of Layered Manufacturing Technologies

2008 ◽  
Author(s):  
Christopher B. Williams ◽  
Farrokh Mistree ◽  
David W. Rosen
Keyword(s):  
Conceptual Design ◽  
Three Dimensional ◽  
Layered Manufacturing ◽  
Functional Classification ◽  
New Classification ◽  
Metal Artifacts ◽  
Three Dimensional Printing ◽  
Classification Framework ◽  
Manufacturing Technologies ◽  
Dimensional Printing

There exist many different layered manufacturing technologies for the realization of prototypes and fully-functional artifacts. Although extremely different in solution principle and embodiment, there exists functional commonality between each technology. This commonality affords the authors an opportunity to propose a new classification framework for layered manufacturing technologies. In addition to using it as a means of classifying existing processes, the authors present the framework as a tool to aid a designer in the conceptual design of new layered manufacturing technologies. The authors close the paper with an example of such an implementation; specifically, the conceptual design of a novel means of obtaining metal artifacts from three-dimensional printing.

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