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Sohn, Dong-Seong
Innovative Nuclear FUEL(INFUEL)
Research Interests
  • Nuclear fuel design
  • Nuclear fuel
  • Nuclear system
  • Performance analysis

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Mechanical analysis of UMo/Al dispersion fuel

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Title
Mechanical analysis of UMo/Al dispersion fuel
Author
Jeong, Gwan YoonSohn, Dong-SeongKim, Yeon Soo
Issue Date
2015-11
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF NUCLEAR MATERIALS, v.466, pp.509 - 521
Abstract
Deformation of fuel particles and mass transfer from the transverse end of fuel meat toward the meat center was observed. This caused plate thickness peaking at a location between the meat edge and the meat center. The underlying mechanism for this fuel volume transport is believed to be fission induced creep of the U-Mo/Al meat. Fuel meat swelling was measured using optical microscopy images of the cross sections of the irradiated test plates. The time-dependent meat swelling was modeled for use in numerical simulation. A distinctive discrepancy between the predicted and measured meat thickness was found at the meat ends, which was assumed to be due to creep-induced mass relocation from the meat end to the meat center region that was not considered in the meat swelling model. ABAQUS FEA simulation was performed to reproduce the observed phenomenon at the meat ends. Through the simulation, we obtained the effective creep rate constants for the interaction layers (IL) and aluminum matrix. In addition, we obtained the corresponding stress and strain analysis results that can be used to understand mechanical behavior of U-Mo/Al dispersion fuel.
URI
https://scholarworks.unist.ac.kr/handle/201301/17050
URL
http://www.sciencedirect.com/science/article/pii/S0022311515301197
DOI
10.1016/j.jnucmat.2015.07.033
ISSN
0022-3115
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