Method for measurement of TRISO kernel and layer volumes by X-ray computed tomography
| Autor: | Grant W. Helmreich, Singanallur Venkatakrishnan, Dylan Richardson, Amir Ziabari |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Polishing 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 010305 fluids & plasmas law.invention Cross section (physics) Nuclear Energy and Engineering Optical microscope Kernel (image processing) law 0103 physical sciences Microscopy Particle General Materials Science Tomography Composite material 0210 nano-technology Layer (electronics) |
| Zdroj: | Journal of Nuclear Materials. 539:152255 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2020.152255 |
| Popis: | Layer dimensions are key parameters for as-fabricated tristructural-isotropic (TRISO) particle fuel as well as for post-irradiation examination of particle performance. Layer thicknesses are typically measured by optical microscopy of the particle cross section near mid-plane, while layer volumes are estimated with serial sectioning and microscopy. This method for measuring layer volumes is limited due to the resolution limit imposed by slice thickness and the effect of the polishing process on delicate irradiated particle microstructures. Image processing software has been developed to segregate the three-dimensional (3D) TRISO particle images provided by x-ray computed tomography (XCT) into high-resolution volumetric data for the kernel, all particle layers, and any internal voids introduced during irradiation. These data can be used to analyze key in-reactor behaviors of TRISO particles such as kernel swelling or buffer shrinkage, which are important inputs for fuel performance modeling. |
| Databáze: | OpenAIRE |
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