ノート
一定変位振幅下における鋼の低サイクル疲労き裂伝播挙動
2020 年 27 巻 106 号 p. 106_75-106_80
詳細
2020 年 27 巻 106 号 p. 106_75-106_80
Low cycle fatigue is a failure mode exhibiting a small number of loading repetitions to failure. Former work conducting research on constant displacement amplitude presented crack growth rate was related to cyclic J-integral range, but the data were limited. This research aimed to provide additional information to cover study done at the past so that a formula for obtaining crack growth rate can be precisely proposed. Research work was conducted with applying two different cyclic displacement means of loading histories to CT specimen. Cumulative plots in crack growth rate addressed to past and current research work were found enforcing formula used for obtaining crack growth rate under larger cyclic strains proposed at the past.
