疲労(1)

[I-53] Fatigue properties of out-of-plane gusset joint tested with plate-bending fatigue test machine

〇Yusuke Shibuya¹, Yasuo Toudou¹, Kengo Anami¹, Daisuke Uchida², Toshiyuki Ishikawa³ (1.Shibaura Institute of Technology, 2.Hosei University, 3.Kansai University)

Keywords:plate-bending fatigue test machine, out-of-plane gusset joint, stress concentration, nominal stress, hot spot stress

Recently, plate bending fatigue test machine was developed and many fatigue test data have been obtained.However, recent study reported that the fatigue strength of out-of-plane gusset welded joints obtained using that machine was relatively lower than fatigue strength obtained from cyclic tension fatigue tests.This study focused this difference of fatigue strength obtained from plate bending fatigue test and tension fatigue test,and discussed the reasons of the differences in the view points of the definition of nominal stress in the plate bending fatigue tests and the differences of stress concentration at weld toe due to the differences of sizes of specimens used for those tests.