Fatigue damage of welded high-strength steel details improved by post-weld treatment subjected to critical cyclic loading conditions

2021 ◽  
Vol 237 ◽  
pp. 111928
Author(s):  
Salim Sleiman Nazzal ◽  
Eeva Mikkola ◽  
Halid Can Yıldırım
Keyword(s):  
Cyclic Loading ◽  
Fatigue Damage ◽  
High Strength Steel ◽  
High Strength ◽  
Loading Conditions

scholarly journals Research on Fatigue Damage in High-Strength Steel (FV520B) Using Nonlinear Ultrasonic Testing

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Bingbing Chen ◽  
Chao Wang ◽  
Pengfei Wang ◽  
Sanlong Zheng ◽  
Weiming Sun
Keyword(s):  
Fatigue Damage ◽  
High Strength Steel ◽  
Main Crack ◽  
Lamb Waves ◽  
High Strength ◽  
Nonlinear Parameter ◽  
Damage State ◽  
Nonlinear Parameters ◽  
Highly Sensitive ◽  
Nonlinear Ultrasonic

In view of the early fatigue damage of high-strength steel FV520B, a nonlinear ultrasonic detection was performed on two types of fatigue samples using nonlinear Lamb waves. The experimental results indicated that the ultrasonic nonlinear parameter is highly sensitive to early fatigue damage in high-strength FV520B. For plate specimens, the ultrasonic nonlinear parameter increased with the number of fatigue cycles. Scanning electron microscopy (SEM) observations of the fatigue specimens revealed that as the number of fatigue cycles increased, the microstructure of the material gradually deteriorated, and the ultrasonic nonlinear parameter increased. For notched specimens, the ultrasonic nonlinear parameter increased as the size of the main crack increased. SEM observations of the fracture indicated that the ultrasonic nonlinear parameters were more consistent with the equivalent microcrack length (defined as the sum of microcrack lengths in the statistical area), as compared with the length of the main crack. It was determined that the nonlinear effect of the Lamb wave is related to the equivalent microcrack length inside the material and that the ultrasonic nonlinear parameter can effectively characterize the fatigue damage state of high-strength FV520B.

scholarly journals Rolling Contact Fatigue Damage from Artificial Defects and Sulphide Inclusions in High Strength Steel

2017 ◽  
Vol 7 ◽  
pp. 468-475 ◽  
Author(s):  
Taizo Makino ◽  
Yutaka Neishi ◽  
Daiki Shiozawa ◽  
Shoichi Kikuchi ◽  
Hitoshi Saito ◽  
...  
Keyword(s):  
Fatigue Damage ◽  
High Strength Steel ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
High Strength ◽  
Rolling Contact

Structural response of high strength S690 welded sections under cyclic loading conditions

2021 ◽  
Vol 182 ◽  
pp. 106696
Author(s):  
H.C. Ho ◽  
Y.B. Guo ◽  
M. Xiao ◽  
T.Y. Xiao ◽  
H. Jin ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Structural Response ◽  
High Strength ◽  
Loading Conditions
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