دانلود مقاله ISI انگلیسی شماره 63978
ترجمه فارسی عنوان مقاله

ارزیابی کمی تجزیه و تحلیل تصویر 3 بعدی به عنوان یک ابزار طراحی برای کمپکتورهای سوخت اورانیوم کم برای آزمایشگاه رادیوتراپی گذرا: یک مطالعه اولیه

عنوان انگلیسی
Evaluating quantitative 3-D image analysis as a design tool for low enriched uranium fuel compacts for the transient reactor test facility: A preliminary study
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
63978 2016 11 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Nuclear Engineering and Design, Volume 300, 15 April 2016, Pages 1–11

چکیده انگلیسی

The surrogate fuel particles occupied 0.8% of the compact by volume with a log-normal distribution of particle sizes with a mean diameter of 39 μm and a standard deviation of 16 μm. Roughly 39% of the particles had a diameter greater than the specified maximum particle size of 44 μm suggesting that the particles agglomerate during fabrication. The local volume fraction of particles also varies significantly within the compact, although uniformities appear to be evenly dispersed throughout the analysed volume. The voids produced during fabrication were on average plate-like in nature with their major axis oriented perpendicular to the compaction direction of the compact. Finally, the microstructure, mainly the large preferentially oriented voids, may cause a small degree of anisotropy in the thermal diffusivity within the compact. α∥/α⊥α∥/α⊥, the ratio of thermal diffusivities parallel to and perpendicular to the compaction direction are expected to be no less than 0.95 with an upper bound of 1.