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oai:ir.kagoshima-u.ac.jp:00007644 2026-03-03T08:44:16Z 228:273:5350 35:36

多連切欠き材の疲れ挙動について : 第三報 き裂進展に及ぼす切欠きの干渉の影響について Fatigue Behavior of Steels with Multiple Notches : Report 3 The Effect of Interaction between Notches on the Fatigue Crack Propagation 若原, 稔 WAKAHARA, Minoru 末永, 勝郎 SUENAGA, Katsuro 規矩, 智 KIKU, Satoshi open access The behavior of fatigue crack propagation of round bar specimens of S35C with one to three sharp notches was investigated and the results obtained are summarized as follows; 1) Crack length at notches that did not fracture increased with the overstress ratio and saturated at some ratio. 2) The ratio of the crack propagation period in the total fatigue life was estimated to be about 98%, regardless of the number of notches and applied stress. 3) The behavior of crack propagation on specimens with two and three notches was found to be explained well with stress intensity factors accounting for interaction between notches by the principle of superposition. 鹿児島大学 Kagoshima University 1988-11 jpn departmental bulletin paper VoR http://hdl.handle.net/10232/11532 https://ir.kagoshima-u.ac.jp/records/7644 0451212X AN00040363 鹿児島大学工学部研究報告 The research reports of the Faculty of Engineering, Kagoshima University 30 215 222 https://ir.kagoshima-u.ac.jp/record/7644/files/AN00040363_v30_p215-222.pdf application/pdf 870.6 kB 2016-10-28 1988-11