2024-03-29T15:36:18Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02001576
2022-10-31T00:51:11Z
1642837622505:1642837855274:1642837880200
1642838403551:1642838406845
Crack Propagation Behavior in S15C and S35C after Overload
Purnowidodo, Anindito
Hisai, Takeo
Fukuzato, Shingo
Makabe, Chobin
真壁, 朝敏
Fatigue crack
Crack propagation rate
Overload
Deceleration
Acceleration
Effective stress intensity factor range
Crack propagation is retarded after applying a tensile overload, and accelerated after applying a compressive overload in fatigue tests under constant base stress amplitude. However, at a negative value of the baseline stress ratio, the fatigue crack propagation rate can accelerate after applying a tensile overload. To evaluate such crack propagation behavior, the effective stress intensity factor range has been employed. The transition of residual fatigue life after applying these loads was observed and this behavior was dependent on the loading conditions. When the applied overload level was lower than a critical level, retardation of crack propagation was observed. However, when the applied overload level was higher than a critical level, the crack growth rate got higher. These phenomena are related to not only residual stress, but also crack opening behavior.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学工学部
2007-03
VoR
http://hdl.handle.net/20.500.12000/1445
0389-102X
AN0025048X
琉球大学工学部紀要
68
11
1
eng
open access