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3D Printing - OSTI GOV

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Last Updated: 10 June 2022

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2022 roadmap on 3D printing for energy

"To ensure a safe transition to a renewable future energy scenario, various methods such as energy harvesting using solar cells or windmills, as well as chemical storage in batteries, supercapacitors, or hydrogen must be developed and eventually deployed. " New fabrication techniques based on additive manufacturing and digitalization of the industrial processes can help increase the competitiveness of clean energy technologies against fossil fuels by increasing the ability to produce highly effective and smart technologies. The present roadmap in this frame outlines the tremendous promise of 3D printing as a new way to fully automatize the manufacturing of energy devices that are not digital files. The paper, in particular, focuses on the current state, present trends, and the potential and attainable advances of 3D printing for the manufacture of the most useful energy products such as fuel cells and electrolysers, batteries, solar cells, solar cells, super-capacitors, thermoelectric generators, and turbomachinery.

Source link: https://www.osti.gov/biblio/1863283


Methods and systems for 3D printing with powders

"A method of printing a three-dimensional article can include spraying a dry build material powder onto a building platform and heating the dry build material powder. " Subsequent layers can be created by spraying dry build material powder onto a lower layer and then increasing the dry build material powder so that the dry build material powder adheres to the lower layer. ".

Source link: https://www.osti.gov/biblio/1860160


Soft elasticity optimises dissipation in 3D-printed liquid crystal elastomers

"Soft-elasticity in monodomain liquid crystal elastomers is ideal for impact-absorbing applications in which strain energy is optimally absorbed at constant pressure. " We use direct-ink writing 3D printing to produce bulk monodomain LCE units and investigate their compressive soft-elasticity over eight decades of strain rate. At quasi-static rates, the monodomain soft-elastic LCE dissipated 45% of strain energy, while comparativor materials dissipated less than 20%. Soft-elasticity has been shown as a promising tool for effectively minimizing the impact of earthquakes u2013 and is a precursor isotropic elastomer.

Source link: https://www.osti.gov/biblio/1834143


Shape evolution and growth mechanisms of 3D-printed nanowires

"3D printing of nanowires using Focused Electron Beam Induced Deposition enables the direct-write fabrication of complex 3D objects on virtually every substrate surface. " The dimensions of constituent nanowires determine the physical characteristics of such freestanding structures. We analyze the thicknesses and widths of freestanding segments as a result of the inclination angles, primary electron energy, beam currents, and precursor flux. Basing's effects are shown by detailed scanning electron microscopy measurements and Monte Carlo/Finite Differences simulations. ".

Source link: https://www.osti.gov/biblio/1817549


Properties of SiC-Si made via binder jet 3D printing of SiC powder, carbon addition, and silicon melt infiltration

"We describe the physical and mechanical characteristics of ceramic composite materials made by binder jet 3D printing with silicon carbide powders, followed by phenolic resin infiltration and pyrolysis to produce carbon, as well as a final reactive silicon melt infiltration step. " Although the manufacturing process described here resulted in extremely dense, gas impermeable silicon carbide composite composites with characteristics comparable to those produced by conventional methods, BJ3DP allows the production of objects with diverse shape, unlike traditional techniques.

Source link: https://www.osti.gov/biblio/1813244


On the additive manufacturing (3D printing) of viscoelastic materials and flow behavior: From composites to food manufacturing

"Additive manufacturing, also known as 3D-printing, has gained traction in industrial production thanks to its breakthrough in rapid prototyping and processing. Moreover, the main aim of this review paper is focused on the viscoelastic behavior of 3D printing materials under ambient conditions, which are not typically under melt-flow or higher temperatures. The first section explores the basic principles of viscosity and viscoelastic phenomena, with a focus on the most suitable conditions a viscous material should have prior to 3D-printing.

Source link: https://www.osti.gov/biblio/1820759


Intensity modulated Ir-192 brachytherapy using high-Z 3D printed applicators

"3D printing methods using ISO 10993 approved biocompatible plastics and 3D printable tungsten-loaded plastics were evaluated. The shielded applicator designs investigated here enable for reduction of the dose by over half at 5 mm from the applicator surface in desirable areas, while also allowing a more symmetric dose with isodose line deviations less than 0. 5 mm from circular. The 2D modeling methods used here provide a fast way to quickly assess shielding designs, while the 3D printing methods enable for prototypes of novel shapes. Both TOPAS Monte Carlo and Acuros BV results indicate that significant dose shaping and organ at risk sparing can be achieved without substantially compromising the strategy in areas that require the full dose.

Source link: https://www.osti.gov/biblio/1656554

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions