Binder-jet powder-bed additive manufacturing (3D printing) of thick graphene-based electrodes

Carbon ◽  
2017 ◽  
Vol 119 ◽  
pp. 257-266 ◽  
Author(s):  
Amir Azhari ◽  
Ehsan Marzbanrad ◽  
Dilara Yilman ◽  
Ehsan Toyserkani ◽  
Michael A. Pope
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Powder Bed

Exploring Additive Manufacturing Processes for Direct 3D Printing of Copper Induction Coils

2017 ◽  
Author(s):  
John D. Martin
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Electron Beam Melting ◽  
Energy Deposition ◽  
Manufacturing Processes ◽  
Powder Bed Fusion ◽  
Laser Melting ◽  
Powder Bed ◽  
Computer Aided ◽  
Directed Energy

A number of additive manufacturing processes were analyzed and compared in regards to the direct 3D printing of copper induction coils. The purpose of this study was to narrow in on 3D printing technologies that would best be suited for the manufacture of copper inductions coils. The main focus of the study was to look at how all the available additive processes could specifically be successful at creating parts made of copper pure enough to effectively conduct electricity and also geometries complex enough to meet the demands of various induction coil designs. The results of this study led to three main categories of additive manufacturing that were deemed good choices for producing copper induction coils, these included: powder bed fusion, sheet lamination, and directed energy deposition. Specific processes identified within these categories were powder bed fusion using electron beam melting and laser melting; ultrasonic additive manufacturing; and directed energy deposition utilizing laser melting and electron beam melting using both wire and powder material delivery systems. Also discussed was additional benefits that using 3D printing technology could provide beyond the physical manufacturing portion by opening doors for coupling with computer aided drafting (CAD) and computer aided engineering (CAE) software in order to create a seamless design-to-production process.

scholarly journals Powder Bed Fusion Additive Manufacturing Using Critical Raw Materials: A Review

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 909
Author(s):  
Vladimir V. Popov ◽  
Maria Luisa Grilli ◽  
Andrey Koptyug ◽  
Lucyna Jaworska ◽  
Alexander Katz-Demyanetz ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Industrial Revolution ◽  
Raw Materials ◽  
Powder Bed ◽  
Energy Applications ◽  
Supply And Distribution ◽  
Manufacturing Techniques ◽  
Key Enabling Technologies ◽  
Critical Raw Materials

The term “critical raw materials” (CRMs) refers to various metals and nonmetals that are crucial to Europe’s economic progress. Modern technologies enabling effective use and recyclability of CRMs are in critical demand for the EU industries. The use of CRMs, especially in the fields of biomedicine, aerospace, electric vehicles, and energy applications, is almost irreplaceable. Additive manufacturing (also referred to as 3D printing) is one of the key enabling technologies in the field of manufacturing which underpins the Fourth Industrial Revolution. 3D printing not only suppresses waste but also provides an efficient buy-to-fly ratio and possesses the potential to entirely change supply and distribution chains, significantly reducing costs and revolutionizing all logistics. This review provides comprehensive new insights into CRM-containing materials processed by modern additive manufacturing techniques and outlines the potential for increasing the efficiency of CRMs utilization and reducing the dependence on CRMs through wider industrial incorporation of AM and specifics of powder bed AM methods making them prime candidates for such developments.

3D printing of magnetic parts by laser powder bed fusion of iron oxide nanoparticle functionalized polyamide powders

2020 ◽  
Vol 8 (35) ◽  
pp. 12204-12217
Author(s):  
Tim Hupfeld ◽  
Soma Salamon ◽  
Joachim Landers ◽  
Alexander Sommereyns ◽  
Carlos Doñate-Buendía ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Iron Oxide ◽  
3D Printing ◽  
Iron Oxide Nanoparticle ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Oxide Nanoparticle

The development of new feedstock materials is a central prerequisite for advances in Additive Manufacturing and can be achieved by colloidal additivation with well-dispersed laser-generated nanoparticles.

Multi-material model for the simulation of powder bed fusion additive manufacturing

2021 ◽  
Vol 194 ◽  
pp. 110415
Author(s):  
Vera E. Küng ◽  
Robert Scherr ◽  
Matthias Markl ◽  
Carolin Körner
Keyword(s):  
Additive Manufacturing ◽  
Material Model ◽  
Powder Bed Fusion ◽  
Powder Bed

scholarly journals Efficient 3D printing via photooxidation of ketocoumarin based photopolymerization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaoyu Zhao ◽  
Ye Zhao ◽  
Ming-De Li ◽  
Zhong’an Li ◽  
Haiyan Peng ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Visible Light ◽  
Light Exposure ◽  
Three Dimensional ◽  
3D Printer ◽  
Light Penetration ◽  
Viable Solution

AbstractPhotopolymerization-based three-dimensional (3D) printing can enable customized manufacturing that is difficult to achieve through other traditional means. Nevertheless, it remains challenging to achieve efficient 3D printing due to the compromise between print speed and resolution. Herein, we report an efficient 3D printing approach based on the photooxidation of ketocoumarin that functions as the photosensitizer during photopolymerization, which can simultaneously deliver high print speed (5.1 cm h−1) and high print resolution (23 μm) on a common 3D printer. Mechanistically, the initiating radical and deethylated ketocoumarin are both generated upon visible light exposure, with the former giving rise to rapid photopolymerization and high print speed while the latter ensuring high print resolution by confining the light penetration. By comparison, the printed feature is hard to identify when the ketocoumarin encounters photoreduction due to the increased lateral photopolymerization. The proposed approach here provides a viable solution towards efficient additive manufacturing by controlling the photoreaction of photosensitizers during photopolymerization.

scholarly journals A STRUCTURED APPROACH TO REDUCE DESIGN ITERATIONS IN ADDITIVE MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 231-240
Author(s):  
Laura Wirths ◽  
Matthias Bleckmann ◽  
Kristin Paetzold
Keyword(s):  
Additive Manufacturing ◽  
Spare Parts ◽  
Design Guidelines ◽  
Final Part ◽  
Layer By Layer ◽  
Powder Bed ◽  
Batch Sizes ◽  
Manufacturing Technologies ◽  
Structured Approach ◽  
Design Freedom

AbstractAdditive Manufacturing technologies are based on a layer-by-layer build-up. This offers the possibility to design complex geometries or to integrate functionalities in the part. Nevertheless, limitations given by the manufacturing process apply to the geometric design freedom. These limitations are often unknown due to a lack of knowledge of the cause-effect relationships of the process. Currently, this leads to many iterations until the final part fulfils its functionality. Particularly for small batch sizes, producing the part at the first attempt is very important. In this study, a structured approach to reduce the design iterations is presented. Therefore, the cause-effect relationships are systematically established and analysed in detail. Based on this knowledge, design guidelines can be derived. These guidelines consider process limitations and help to reduce the iterations for the final part production. In order to illustrate the approach, the spare parts production via laser powder bed fusion is used as an example.

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