Effect of non-proportional stress states caused by varying phase shifts on the fatigue life of welded joints
Source abstract
Abstract
In this paper, the effect of multiaxial non-proportional stress states on the fatigue life of welded joints is investigated. The non-proportional stress states are caused by various phase shifts between the normal and shear stresses. In total 45, welded tube-to-tube specimens are tested under multiaxial proportional and non-proportional loading. The increase in fatigue damage caused by non-proportional stresses, compared to proportional stresses, is quantified by penalty factors. A set of penalty factors are derived from the fatigue experiments for use with the governing multiaxial fatigue criteria by the International Institute of Welding (IIW) and Det Norske Veritas (DNV). The experimental results show that phase shifts decrease the fatigue life. However, this reduction is not to the extend proposed by the governing guidelines. Furthermore, the results indicate that different degrees of phase shift do not induce varying levels of fatigue life degradation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Fatigue and fracture mechanics · Advanced Welding Techniques Analysis · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Maddox · 1991
2. Socie · 2000
3. Lee · 2011
4. Radaj · 2007
5. Influence of load and deformation-controlled multiaxial tests on fatigue life to crack initiation10.1016/S0142-1123(00)00079-7 ↗
6. Multiaxial fatigue assessment of welded joints – Recommendations for design codes10.1016/j.ijfatigue.2008.06.001 ↗
7. Influence of material’s ductility and local deformation mode on multiaxial fatigue response10.1016/j.ijfatigue.2011.01.010 ↗
8. Multiaxial fatigue of welded joints under in-phase and out-of-phase local strains and stresses10.1016/0142-1123(95)93051-3 ↗
9. Witt · 2000
10. Fatigue of a welded steel attachment under combined direct stress and shear stress
11. Razmjoo · 1996
12. Fatigue crack growth of a welded tube–flange connection under bending and torsional loading10.1046/j.1460-2695.2001.00408.x ↗
13. Fatigue behaviour of a box-welded joint under biaxial cyclic loading: effect of biaxial load range ratio and cyclic compressive loads in the lateral direction10.1046/j.1460-2695.2003.00645.x ↗
14. Hobbacher · 2008
15. DNV-RP-C203 · 2019
16. Yung · 1986
17. Bäckström M, Siliander A, Kuitunen R, Ilvonen R. Multiaxial fatigue experiments of square hollow section tubes-to-plate welded joints. In: North European engineering and science conference series. 1997, p. 163–77.
18. Witt M, Zenner H. Multiaxial Fatigue Behavior of Welded Flange-Tube Connections under Combined Loading. Experiments and Lifetime Prediction. In: 5th international conference on biaxial/multiaxial fatigue and fracture. 1997, p. 421–34.
19. Fatigue design optimisation of welded box beams subjected to combined bending and torsion10.1016/S1566-1369(99)80034-X ↗
20. Fatigue strength of welded joints under multiaxial loading: experiments and calculations10.1046/j.1460-2695.2001.00397.x ↗
21. Fatigue growth behavior for surface crack in welding joints under combined compressive and bending stresses10.1016/j.ijfatigue.2015.03.005 ↗
22. van Lieshout · 2020
23. The strength of metals under combined alternating stresses
24. Multiaxial fatigue assessment of welded joints using the notch stress approach10.1016/j.ijfatigue.2015.10.021 ↗
25. Multiaxial fatigue assessment of welded joints using a principal component-based measure for non-proportionality
26. Maddox · 2001
27. MTS · 2023
28. Comparative study of critical plane fatigue criteria on multiaxial variable amplitude loaded welded test specimens10.1016/j.ijfatigue.2021.106670 ↗