[1D01-06] Fuel Debris

[1D03] Research and human resource development for analysis of fuel debris and decommissioning technology of Fukushima Daiichi nuclear power plants

(11) Microscopic material properties and macroscopic compression strength of simulated nuclear fuel debris

*Aruto Kawakami¹, Masaki Teranishi¹, Osamu Kuwazuru¹ (1. Fukui Univ)

Keywords:Fuel debris, Uranium dioxide, Pore, Compressive Strength, Finite element analysis, Nanoindentation

The molten solidified material of UO₂-B₂O₃ was used as simulated fuel debris. The effect of porosity on the compressive strength and elasto-plastic properties were investigated by finite element analysis and nanoindentation. As a result of simulating several different porosity models, the effect of porosity on compressive strength became clear.