HCF strength estimation of notched Ti–6Al–4V specimens considering the critical distance size effect
Source abstract
Abstract
Abstract Generally not only the material but also the notch geometry affects the HCF strength. So, when evaluating the fatigue limit of notched Ti–6Al–4V specimens using the conventional theory of critical distance (TCD), a possible critical distance size effect was identified. In this paper, in order to overcome the critical distance size effect, Kt was introduced. And based on an assumption that the product of critical distance and Kt was constant, the TCD was modified to evaluate the HCF strength of notched Ti–6Al–4V specimens. The prediction results fell into an error interval of about ±15% using the modified TCD.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Non-Destructive Testing Techniques · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Notch size effects in HCF behavior of Ti–6Al–4V10.1016/S0142-1123(99)00023-7 ↗
2. Influence of stress state on high cycle fatigue of notched Ti–6Al–4V specimens10.1016/S0142-1123(99)00059-6 ↗
3. Neuber · 1958
4. Notch sensitivity
5. Engineering formulae for fatigue strength reduction due to crack-like notches10.1007/BF00942722 ↗
6. Fatigue crack initiation and propagation phases near notches in metals with low notch sensitivity10.1016/S0142-1123(97)00091-1 ↗
7. Geometrical effects in fatigue: a unifying theoretical model10.1016/S0142-1123(99)00007-9 ↗
8. Prediction of fatigue failure location on a component using a critical distance method10.1016/S0142-1123(00)00062-1 ↗
9. The validation of some methods of notch fatigue analysis10.1046/j.1460-2695.2000.00302.x ↗
10. A mechanistic approach to critical distance methods in notch fatigue10.1046/j.1460-2695.2001.00401.x ↗
11. Some new methods for predicting fatigue in welded joints10.1016/S0142-1123(01)00174-8 ↗
12. Fatigue design in the presence of stress concentrations10.1243/03093240360713496 ↗
13. A unifying approach to estimate the high-cycle fatigue strength of notched components subjected to both uniaxial and multiaxial cyclic loadings10.1111/j.1460-2695.2004.00759.x ↗
14. The theory of critical distances: a review of its applications in fatigue10.1016/j.engfracmech.2006.12.004 ↗
15. The theory of critical distances10.1016/j.engfracmech.2007.04.007 ↗
16. Taylor · 2007
17. Susmel · 2009
18. Susmel L, Taylor D. On the use of the theory of critical distances to estimate fatigue strength of notched components in the medium-cycle fatigue regime. In: Proceedings of FATIGUE 2006. Altanta, USA; 2006.
19. A novel formulation of the theory of critical distances to estimate lifetime of notched components in the medium-cycle fatigue regime10.1111/j.1460-2695.2007.01122.x ↗
20. An elasto-plastic reformulation of the theory of critical distances to estimate lifetime of notched components failing in the low/medium-cycle fatigue regime
21. High temperature LCF life prediction of notched DS Ni-based superalloy using critical distance concept10.1016/j.ijfatigue.2011.05.018 ↗
22. A combined critical plane and critical distance approach for predicting fatigue crack initiation in notched single-crystal superalloy components10.1016/j.ijfatigue.2011.05.009 ↗
23. The theory of critical distances to estimate lifetime of notched components subjected to variable amplitude uniaxial fatigue loading10.1016/j.ijfatigue.2011.01.012 ↗
24. On the use of critical distance theories for the prediction of the high cycle fatigue limit stress in notched Ti–6Al–4V10.1016/j.ijfatigue.2004.06.002 ↗
25. The effect of notch geometry on critical distance high cycle fatigue predictions10.1016/j.ijfatigue.2005.06.017 ↗
26. Evaluation of the fatigue strength of notched specimens by the point and line methods with high stress ratios10.1016/j.ijfatigue.2004.11.006 ↗
27. Fatigue life prediction of small notched Ti–6Al–4V specimens using critical distance10.1016/j.engfracmech.2010.04.001 ↗
28. Nicholas · 2006
29. The two thresholds of fatigue behavior10.1111/j.1460-2695.1993.tb00129.x ↗
30. Estimating fatigue lifetime of steel weldments locally damaged by variable amplitude multiaxial stress fields10.1016/j.ijfatigue.2009.12.004 ↗