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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Fermilab center renamed after late particle physicist Helen Edwards
Fermi National Accelerator Laboratory’s Integrated Engineering Research Center, which officially opened in January 2024, is now known as the Helen Edwards Engineering Center. The name was changed to honor the late particle physicist who led the design, construction, commissioning, and operation of the lab’s Tevatron accelerator and was part of the Water Resources Development Act signed by President Biden in December 2024, according to a Fermilab press release.
Weiping Shen, Peng Li, Chulei Zhou, Shiliang Xu, Shuming Wang
Fusion Science and Technology | Volume 66 | Number 1 | July-August 2014 | Pages 260-265
Technical Paper | doi.org/10.13182/FST13-726
Articles are hosted by Taylor and Francis Online.
A monoblock mockup for a divertor uses too much tungsten of high gravity. Segmentation of tungsten armor in the monoblock or macrobrush mockups can reduce excess thermal stress caused by the about 3.5 times difference of thermal expansion coefficient between CuCrZr and tungsten, but it is not enough to avoid cracking of the welding interface between tungsten and CuCrZr because of initial semibrittlement and embrittlement of the tungsten armor in service. In this paper, an interlayer of diamond/Cu composite was inserted between tungsten and CuCrZr to reduce the interfacial stress of welded dissimilar materials. Armor of laminated or macrobrush tungsten was designed to decrease the stress concentration of the welding interface. A Cu foil was inserted between the tungsten armor and the diamond/Cu composite to increase welding strength. The plasma-facing mockups made of W-diamond/Cu-CuCrZr or W-diamond/Cu-12Cr RAFM were designed after optimizing by thermal analysis using finite element method and were prepared by a cubic press for producing diamond. The welding properties and microstructures of the dissimilar materials were investigated. Several mockups were connected to prepare a plasma-facing component by penetrating a CuCrZr tube into several CuCrZr heat sinks. The thermal expansion coefficient of the diamond/Cu interlayer is near that of tungsten, and its thermal conductivity is higher than that of CuCrZr. Plastic copper foils can relax thermal stress to avoid cracking in the welding interface. So, this water-cooled plasma-facing component should be better to dissipate the high heat flux of the divertor in fusion reactors.