OS0105 応力腐食割れの破壊経路予測数値シミュレーション(弾性数理解析とその応用,オーガナイズドセッション)

概要

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In recent years, it causes the stress corrosion cracking, and the breakdowns of piping have occurred in the nuclear power generation plant. As a result, there is a possibility that a serious accident of radiation leak happens. The stress corrosion cracking is a phenomenon that the crack occurs in the material because of the interaction of the stress and the erosive environment, and the crack progresses at time. This study is about the stress corrosion cracking in the combination of the SCM435 steel and the boric acid solution. This combination has the feature that corrosion happens comparatively easily. This simulation is done according to acquired data by the experiment. The stress intensity factor is compared with an analytical solution, and the validity of this simulation is verified. Moreover, the application to the simulation including holes is verified as a result.
2009-07-24