scholarly journals Weld toe modification using spherical-tip WC tool FSP in fatigue strength improvement of high-strength low-alloy steel joints

2018 ◽  
Vol 160 ◽  
pp. 1019-1028 ◽  
Author(s):  
Hajime Yamamoto ◽  
Yoshikazu Danno ◽  
Kazuhiro Ito ◽  
Yoshiki Mikami ◽  
Hidetoshi Fujii
Keyword(s):  
Fatigue Strength ◽  
Alloy Steel ◽  
High Strength ◽  
Low Alloy Steel ◽  
Fatigue Strength Improvement ◽  
Weld Toe ◽  
Steel Joints ◽  
Strength Improvement

scholarly journals Fatigue strength of normal and high strength steel joints improved by weld profiling

2021 ◽  
Author(s):  
Moritz Braun ◽  
Jonas Hensel ◽  
Shi Song ◽  
Sören Ehlers
Keyword(s):  
Fatigue Strength ◽  
High Strength ◽  
Parent Material ◽  
Smooth Transition ◽  
Material Strength ◽  
Treatment Techniques ◽  
Fatigue Design ◽  
Fatigue Strength Improvement ◽  
Steel Joints ◽  
Strength Improvement

While some post-weld treatment techniques increase the fatigue life mainly due to induced compressive residual stress others are trying to create a smooth transition at weld toes. One of the latter is weld profiling. This study investigates the effect of weld profiling for four different steel types from S355 to S900 including one duplex stainless-steel and performs a comparison with high frequency mechanical impact treatment. The observed fatigue strength improvement is significantly higher than typically assumed for such techniques and comparable to increases observed for HFMI treatment. The fatigue strength further increases with parent material strength and is only slightly below the estimated fatigue strength of the parent material. Finally, fatigue design curves are proposed for weld profiling that include an increasing fatigue strength improvement for higher strength materials, but that are still conservative for low weld quality.

scholarly journals Fatigue Strength Improvement Methods by Treating the Weld Toe.

1999 ◽  
Vol 17 (1) ◽  
pp. 111-119 ◽  
Author(s):  
Chitoshi MIKI ◽  
Kengo ANAMI ◽  
Hideki TANI ◽  
Ichiro SUGIMOTO
Keyword(s):  
Fatigue Strength ◽  
Fatigue Strength Improvement ◽  
Weld Toe ◽  
Strength Improvement

3106 Examination for the Fatigue Strength Improvement of the High Strength Bolt/Nut Joint

2013 ◽  
Vol 2013 (0) ◽  
pp. 179-182
Author(s):  
Yasushi TAKASE ◽  
Xin CHEN ◽  
Hikaru MARUYAMA ◽  
Huan WANG ◽  
Nao-Aki NODA ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
High Strength ◽  
High Strength Bolt ◽  
Fatigue Strength Improvement ◽  
Strength Improvement
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