314 衝撃壊食を受けた材料の破損確率評価(関東支部茨城講演会)

概要

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A liquid mercury target system for the MW-class pulse spallation neutron source is being developed in the world. Failure probability analyses on the mercury target that will be installed at the material and life science facility in J-PARC were carried out as taking into account the repeatedly loading by pressure waves and material degradation due to pitting and neutron irradiation damages. It was quantitatively evaluated that the failure probability of the safety hull in the target is lower than 10^<-11> for the expected lifetime in design. On the other hand, the failure probability of the mercury vessel directly subject to the pressure waves and the pitting damage increases gradually with proton-beam power and gets to be ca. 99.9 % in MW-class target lifetime expected in the design.
社団法人日本機械学会の論文
2005-09-08