Impact of high-frequency peening and moderate climate atmosphere on cyclic fatigue life of tee welded joints with surface fatigue cracks

2020 ◽  
Vol 2020 (1) ◽  
pp. 39-44
Author(s):  
V.V. Knysh ◽  
◽  
S.O. Solovei ◽  
L.L. Nyrkova ◽  
A.O. Gryshanov ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Frequency ◽  
Fatigue Cracks ◽  
Cyclic Fatigue ◽  
Surface Fatigue ◽  
Moderate Climate

scholarly journals Impact of high-frequency peening and marine atmosphere on the cyclic life of t-welded joints with surface fatigue cracks

2020 ◽  
Vol 2020 (4) ◽  
pp. 19-24
Author(s):  
V.V. Knysh ◽  
◽  
S.O. Solovei ◽  
L.I. Nyrkova ◽  
V.G. Kot ◽  
...  
Keyword(s):  
Welded Joints ◽  
High Frequency ◽  
Fatigue Cracks ◽  
Marine Atmosphere ◽  
Cyclic Life ◽  
Surface 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. 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

Influence of high-frequency peening and atmosphere of marine climate on the cyclic life of T-welded joints with surface fatigue cracks

2020 ◽  
Vol 2020 (4) ◽  
pp. 22-28
Author(s):  
V.V. Кnysh ◽  
◽  
S.O. Solovei ◽  
L.I. Nyrkova ◽  
V.G. Kot ◽  
...  
Keyword(s):  
Welded Joints ◽  
High Frequency ◽  
Fatigue Cracks ◽  
Cyclic Life ◽  
Surface Fatigue ◽  
Marine Climate

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

Fatigue Life of Welded Joints of High-Strength Structural Steel S960QL

2016 ◽  
Vol 250 ◽  
pp. 169-174 ◽  
Author(s):  
Tomasz Slezak ◽  
Lucjan Sniezek
Keyword(s):  
Fatigue Life ◽  
Structural Steel ◽  
Welded Joints ◽  
Low Cycle Fatigue ◽  
Fatigue Cracks ◽  
Fatigue Cracking ◽  
High Strength ◽  
Propagation Rate ◽  
Total Strain Amplitude ◽  
Fatigue Life Analysis

The article presents the results of research on low cycle fatigue strength of welded joints of structural steel S960QL. Two types of butt welds were analysed: I-joints and V-joints. The tests were performed under load controlled using the total strain amplitude εac. Fatigue life analysis was conducted based on the Manson-Coffin-Basquin equation, which made it possible to determine fatigue parameters. High concordance was found of the adopted description model with experimental results. Studies have shown differences in the fatigue life of the various joints analysed, wherein I-joints showed about 20-50% higher fatigue life. Fractographic tests of fatigue fractures in joints revealed the details of fatigue cracking and differences in the propagation rate of fatigue cracks.

Fatigue crack growth behavior of rib-to-deck double-sided welded joints of orthotropic steel decks

2020 ◽  
pp. 136943322096175
Author(s):  
Yang Liu ◽  
Fanghuai Chen ◽  
Da Wang ◽  
Naiwei Lu
Keyword(s):  
Fatigue Crack ◽  
Fatigue Life ◽  
Crack Growth ◽  
Welded Joints ◽  
Mixed Mode ◽  
Fatigue Cracks ◽  
Growth Behavior ◽  
Crack Growth Behavior ◽  
Fatigue Crack Growth Behavior ◽  
Orthotropic Steel Decks

Innovative double-sided welding is expected to improve the fatigue resistance of rib-to-deck welded joints of orthotropic steel decks (OSDs). Welding crack-like defects are the crucial issue affecting the fatigue performance of rib-to-deck double-sided welded joints. This study presents a numerical simulation of three-dimensional (3D) mixed mode fatigue crack growth behavior of rib-to-deck double-sided welded joints of OSDs. Maximum tensile stress theory and equivalent stress intensity factor (SIF) were used to simulate mixed mode fatigue cracks growth. The Paris law model was employed to predict the fatigue life. Fatigue cracks of rib-to-deck double-sided welded joints were characterized by the presence of mixed mode cracks of modes I (open), mode II (shear), and mode III (tear), which was dominated by mode I. The equivalent SIF was found to be complex at the growth stage with the maximum value at the two ends of the crack front and the minimum value at the midpoint of the crack front. The crack shape became flatter in the later phase of the crack growth. The fatigue crack surface underwent deflections during crack growth, making the final crack shape exhibiting the characteristic of a spatial curved surface. The initial crack geometry showed a significant impact on the fatigue life.

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