scholarly journals Application of Friction Stir Processing to Weld Toe for Fatigue Strength Improvement of High-Strength Low-Alloy Steel Joint

2018 ◽  
Vol 36 (4) ◽  
pp. 1WL-4WL ◽  
Author(s):  
Hajime Yamamoto ◽  
Yoshikazu Danno ◽  
Kazuhiro Ito ◽  
Yoshiki Mikami ◽  
Kazuyuki Kohama ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Alloy Steel ◽  
Friction Stir Processing ◽  
High Strength ◽  
Low Alloy Steel ◽  
Friction Stir ◽  
Steel Joint ◽  
Fatigue Strength Improvement ◽  
Weld Toe ◽  
Strength Improvement

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 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

Residual Stress Reduction and Fatigue Strength Improvement by Controlling Welding Pass Sequences

1999 ◽  
Vol 122 (1) ◽  
pp. 108-112 ◽  
Author(s):  
Masahito Mochizuki ◽  
Toshio Hattori ◽  
Kimiaki Nakakado
Keyword(s):  
Residual Stress ◽  
Fatigue Strength ◽  
Stress Reduction ◽  
Stress Amplitude ◽  
High Stress ◽  
Initial Residual Stress ◽  
Fatigue Strength Improvement ◽  
Weld Toe ◽  
Goodman Diagram ◽  
Strength Improvement

The effects of residual stress on fatigue strength at a weld toe in a multi-pass fillet weld joint were evaluated. The residual stresses in the weld joints were varied by controlling the sequence of welding passes. The residual stress at the weld toe was 80 MPa in the specimen whose last welding pass was on the main plate side, but it was 170 MPa in the specimen whose last pass was on the attachment side. The fatigue strength was nearly the same at high stress amplitude for both specimens, but the fatigue strength of the specimen whose last weld pass on the main plate was higher than that of the other specimen at low stress amplitude. This difference is due to the magnitude of the initial residual stress and the relaxation of the residual stress under fatigue cycling. The effects of the residual stress were shown in a modified Goodman diagram, in which residual stress is treated as a mean stress. [S0094-4289(00)01701-1]

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