Fatigue strength analysis of welded joints using an experimental approach based on static characterization tests

2016 ◽  
Vol 9 ◽  
pp. 513-530
Author(s):  
Hamza Khatib ◽  
Khalifa Mansouri ◽  
Bachir Salhi ◽  
Abderrahmane Yeznasni
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Experimental Approach ◽  
Strength Analysis

scholarly journals Fatigue strength analysis of bogie frames under random loads

2019 ◽  
Vol 11 (9) ◽  
pp. 168781401987801 ◽  
Author(s):  
Qi An ◽  
Hua Zhao ◽  
Peihai Li ◽  
Maohai Fu
Keyword(s):  
Fatigue Strength ◽  
Coordinate System ◽  
Welded Joints ◽  
Strength Analysis ◽  
Node Degree ◽  
International Institute ◽  
Bogie Frame ◽  
Welding Method ◽  
Stress Components ◽  
Time Histories

In this study, a method for analyzing the fatigue strength of a bogie frame under a random load was proposed. Based on the geometric features, a welded joint coordinate system was established to compute the stress components of each node in this coordinate system. With the influence of small amplitude cycles included, based on the corrected S–N curve and a method for calculating the equivalent constant amplitude stress, the node and comprehensive degree of utilization were calculated based on the anti-fatigue design grade of welded joints to evaluate the fatigue strength of a structure under a given lifespan. The FKM and International Institute of Welding methods were used to evaluate the fatigue strength of typical welded joints of a bogie frame. The characteristics of the node degree of utilization under different analytical methods were compared, and the results showed that when the time histories of the three stress components of the nodes had significant non-proportional features, the FKM method obtained conservative results. When the time histories of the three stress components of the nodes were synchronized, the criterion value specified by the International Institute of Welding method was the main factor affecting the distribution characteristics of the node degree of utilization. The analysis based on the International Institute of Welding method can effectively balance the lightweight design and reliability of the structure.

Residual Stress Release and Its Effects on the Fatigue Strength of Typical Welded Joints in Cone-Cylinder Pressure Structures

2021 ◽  
Vol 111 ◽  
pp. 102673
Author(s):  
Liangbi Li ◽  
Jingxi Zhang ◽  
Yiwen Zhang ◽  
Deqin Zhu ◽  
Zhengquan Wan ◽  
...  
Keyword(s):  
Residual Stress ◽  
Fatigue Strength ◽  
Welded Joints ◽  
Cylinder Pressure ◽  
Stress Release

Re-evaluation of weld root fatigue strength for load-carrying fillet welded joints using the notch stress concept

2021 ◽  
Vol 144 ◽  
pp. 106076
Author(s):  
Hamidreza Rohani Raftar ◽  
Mohammad Dabiri ◽  
Antti Ahola ◽  
Timo Björk
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Notch Stress ◽  
Load Carrying ◽  
Weld Root

scholarly journals Evaluation of tensile strength and fatigue strength of commercial pure aluminum/tough pitch copper friction-welded joints by deformation heat input

2007 ◽  
Vol 57 (8) ◽  
pp. 357-361 ◽  
Author(s):  
Hiizu OCHI ◽  
Yoshiaki YAMAMOTO ◽  
Takashi YAMAZAKI ◽  
Takeshi SAWAI ◽  
Gosaku KAWAI ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Welded Joints ◽  
Heat Input ◽  
Pure Aluminum ◽  
Commercial Pure Aluminum

scholarly journals Improving Fatigue Strength of Butt Welded Joints by Laser Peening and Its Main Factor

2011 ◽  
Vol 29 (3) ◽  
pp. 146-153 ◽  
Author(s):  
Yoshihiro SAKINO ◽  
Yuji SANO ◽  
Rie SUMIYA ◽  
You-Chul KIM
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Laser Peening ◽  
Main Factor
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