scholarly journals Influence of laser weld shape on mechanical and fatigue behaviour of single lap laser welded joints

2020 ◽  
Vol 1 ◽  
pp. 100018 ◽  
Author(s):  
Rakesh Goyal ◽  
Mohamad El-zein
Keyword(s):  
Welded Joints ◽  
Fatigue Behaviour ◽  
Laser Weld ◽  
Weld Shape

scholarly journals Low-cycle fatigue behaviour of laser welded high-strength steel DOMEX 700 MC

2018 ◽  
Vol 157 ◽  
pp. 05013 ◽  
Author(s):  
Peter Kopas ◽  
Milan Sága ◽  
František Nový ◽  
Bohuš Leitner
Keyword(s):  
Fatigue Life ◽  
Welded Joints ◽  
High Strength Steel ◽  
Fatigue Testing ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Fatigue Behaviour ◽  
Total Strain Amplitude ◽  
Cycle Fatigue ◽  
Fatigue Life Analysis

The article presents the results of research on low cycle fatigue strength of laser welded joints vs. non-welded material of high-strength steel DOMEX 700 MC. The tests were performed under load controlled using the total strain amplitude ɛac. The operating principle of the special electro-mechanic fatigue testing equipment with a suitable clamping system was working on 35 Hz frequency. Fatigue life analysis was conducted based on the Manson-Coffin-Basquin equation, which made it possible to determine fatigue parameters. Studies have shown differences in the fatigue life of original specimens and laser welded joints analysed, where laser welded joints showed lower fatigue resistance. In this article a numerical analysis of stresses generated in bending fatigue specimens has been performed employing the commercially available FEM-program ADINA.

Effect of dilution on fatigue behaviour of welded joints produced by low-transformation-temperature fillers

2019 ◽  
Vol 24 (7) ◽  
pp. 601-608 ◽  
Author(s):  
Shipin Wu ◽  
Dongpo Wang ◽  
Zhi Zhang ◽  
Chengning Li ◽  
Xiuguo Liu ◽  
...  
Keyword(s):  
Welded Joints ◽  
Transformation Temperature ◽  
Fatigue Behaviour

scholarly journals Fatigue behaviour of laser repairing welded joints

2007 ◽  
Vol 14 (8) ◽  
pp. 1586-1593 ◽  
Author(s):  
L.P. Borrego ◽  
J.T.B. Pires ◽  
J.M. Costa ◽  
J.M. Ferreira
Keyword(s):  
Welded Joints ◽  
Fatigue Behaviour

Fatigue Life of Multi-Spot Welded Structures

2007 ◽  
Vol 348-349 ◽  
pp. 249-252
Author(s):  
Pietro Salvini ◽  
Francesco Vivio ◽  
Vincenzo Vullo
Keyword(s):  
Fatigue Life ◽  
Numerical Solution ◽  
Welded Joints ◽  
Structural Model ◽  
Fatigue Behaviour ◽  
Progressive Damage ◽  
Welded Structures ◽  
Accumulated Damage ◽  
Fatigue Data ◽  
Spot Welded

A procedure that makes use of a conventional stress value (ERS) is applied to spot welded joints. The ERS can be evaluated for every spot weld of the structural model. Through the use of ERS-N curves, fatigue data performed on different joint geometries can be successfully mixed together. One of the main aspects is that progressive damage deeply influences fatigue behaviour, so that a simple numerical solution neglecting accumulated damage is unable to foresee the whole fatigue life. In the present paper the method has been applied to many experimental results: it is shown that a unique criterion is able to deal with several different structures and materials.

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