scholarly journals Improvement of cyclic fatigue life of tee welded joints by high-frequency mechanical peening under the conditions of higher humidity and temperature

2016 ◽  
Vol 2016 (3) ◽  
pp. 12-17 ◽  
Author(s):  
V.V. Knysh ◽  
◽  
S.A. Solovej ◽  
L.I. Nyrkova ◽  
L.G. Shitova ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Frequency ◽  
Cyclic Fatigue

scholarly journals Improvement of cyclic fatigue life of tee welded joints by high-frequency mechanical peening under the conditions of higher humidity and temperature

2016 ◽  
Vol 2016 (3) ◽  
pp. 19-24
Author(s):  
V.V. Knysh ◽  
◽  
S.A. Solovej ◽  
L.I. Nyrkova ◽  
L.G. Shitova ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Frequency ◽  
Cyclic Fatigue

scholarly journals Influence of corrosion damage on cyclic fatigue life of tee welded joints treated by high-frequency mechanical peening

2016 ◽  
Vol 2016 (9) ◽  
pp. 46-51
Author(s):  
V.V. Knysh ◽  
◽  
S.A. Solovej ◽  
L.I. Nyrkova ◽  
L.G. Shitova ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Frequency ◽  
Corrosion Damage ◽  
Cyclic Fatigue

scholarly journals Influence of corrosion damage on cyclic fatigue life of tee welded joints treated by high-frequency mechanical peening

2016 ◽  
Vol 2016 (9) ◽  
pp. 42-46 ◽  
Author(s):  
V.V. Knysh ◽  
◽  
S.A. Solovej ◽  
L.I. Nyrkova ◽  
L.G. Shitova ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Frequency ◽  
Corrosion Damage ◽  
Cyclic Fatigue

Investigation of High Cycle and Low Cycle Fatigue Interaction on Fatigue Behavior of Welded Joints

2012 ◽  
Vol 217-219 ◽  
pp. 2101-2106
Author(s):  
Liang Chen Wu ◽  
Dong Po Wang
Keyword(s):  
Adverse Effect ◽  
Fatigue Life ◽  
Welded Joints ◽  
High Frequency ◽  
Stress Ratio ◽  
High Cycle Fatigue ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Low Frequency ◽  
Cycle Fatigue

Samples of Q345 steel welded joints were tested to failure under low cycle fatigue(LCF),high cycle fatigue(HCF) and combined fatigue(CCF) using an apparatus that is capable of providing interactive LCF/HCF loading. The stress ratio R is 0.5 and the frequency of HCF is about 19kHz. The result indicates that not only high frequency minor cycles superimposed on low frequency major cycles , but also low frequency minor cycles superimposed on high frequency major cycles can do remarkable damage to fatigue performance of welded joints. The CCF strength is characterized by amplitude envelope. If CCF fatigue life is characterized by LCF life, adverse effect of HCF component is underestimated. If CCF fatigue life is characterized by HCF life, adverse effect of LCF component is overrated.

scholarly journals Correction: Wang et al. Generalized SCF Formula of Out-Of-Plane Gusset Welded Joints and Assessment of Fatigue Life Extension by Additional Weld. Materials 2021, 14, 1249

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2331
Author(s):  
Yixun Wang ◽  
Yuxiao Luo ◽  
Yuki Kotani ◽  
Seiichiro Tsutsumi
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
Life Extension ◽  
Out Of Plane

The authors wish to revise in the text of Appendix A, pages 19–21 [...]

scholarly journals Generalized SCF Formula of Out-Of-Plane Gusset Welded Joints and Assessment of Fatigue Life Extension by Additional Weld

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1249
Author(s):  
Yixun Wang ◽  
Yuxiao Luo ◽  
Yuki Kotani ◽  
Seiichiro Tsutsumi
Keyword(s):  
Fatigue Life ◽  
Fatigue Resistance ◽  
Welded Joints ◽  
Life Extension ◽  
Leg Length ◽  
Notch Stress ◽  
Out Of Plane ◽  
Weld Toe ◽  
Effective Notch Stress ◽  
Geometric Effects

The existing S-N curves by effective notch stress to assess the fatigue life of gusset welded joints can result in reduced accuracy due to the oversimplification of bead geometries. The present work proposes the parametric formulae of stress concentration factor (SCF) for as-welded gusset joints based on the spline model, by which the effective notch stress can be accurately calculated for fatigue resistance assessment. The spline model is also modified to make it applicable to the additional weld. The fatigue resistance of as-welded and additional-welded specimens is assessed considering the geometric effects and weld profiles. The results show that the error of SCFs by the proposed formulae is proven to be smaller than 5%. The additional weld can increase the fatigue life by as great as 9.4 times, mainly because the increasing weld toe radius and weld leg length lead to the smaller SCF. The proposed series of S-N curves, considering different SCFs, can be used to assess the welded joints with various geometric parameters and weld profiles.

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