A physically short fatigue crack growth approach based on low cycle fatigue properties
Source abstract
Abstract
Abstract This work proposes an improved and simplified fatigue life equation called LAPS, formulated from low cycle fatigue data of smooth specimens and the Rice-Kujawski-Ellyin asymptotic field, with proper crack opening functions for closure effects. The model captures both long and physically short fatigue crack growth behavior, but the emphasis of this contribution is on the modifications for physically short cracks based on empirical models found in the literature. The predictions for physically short cracks from this model coincide well with experimental data for the railway axle used steel 25CrMo4. The predictions for long cracks match well with data from a variety of different metals. This makes the model a suitable alternative, e.g. to NASGRO, for engineering applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Probabilistic and Robust Engineering Design · Railway Engineering and Dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Corner fatigue cracking behavior of hybrid laser AA7020 welds by synchrotron X-ray computed microtomography10.1016/j.msea.2015.11.011 ↗
2. Potential improvements of the presently applied in-service inspection of wheelset axles10.1016/j.ijfatigue.2015.08.014 ↗
3. Thermal crack growth-based fatigue life prediction due to braking for a high-speed railway brake disc10.1016/j.ijfatigue.2016.02.024 ↗
4. Safe life and damage tolerance aspects of railway axles – a review10.1016/j.engfracmech.2012.09.029 ↗
5. A critical analysis of crack propagation laws10.1115/1.3656900 ↗
6. Forman RG, Mettu SR. Behavior of surface and corner cracks subjected to tensile and bending loads in Ti–6Al–4V alloy. In: Ernst HA, Saxena A, McDowell DL, editors. Fracture mechanics: 22nd symposium. ASTM STP 1131, Philadelphia; 1992. p. 519–46.
7. Fatigue crack closure under cyclic tension10.1016/0013-7944(70)90028-7 ↗
8. Modified NASGRO equation for physically short cracks10.1016/j.ijfatigue.2013.08.019 ↗
9. Small fatigue cracks: a statement of the problem and potential solutions10.1016/0025-5416(86)90217-X ↗
10. Observation and modeling of physically short fatigue crack closure in terms of in-situ SEM fatigue test10.1016/j.msea.2014.08.021 ↗
11. Probabilistic low cycle fatigue life prediction using an energy-based damage parameter and accounting for model uncertainty10.1177/1056789511429836 ↗
12. An improvement on prediction of fatigue crack growth from low cycle fatigue properties10.1016/S0013-7944(98)00029-0 ↗
13. Stresses due to a sharp notch in a work-hardening elastic–plastic material loaded by longitudinal shear10.1115/1.3607681 ↗
14. On the size of plastic zone ahead of a crack-tip10.1016/0013-7944(86)90219-5 ↗
15. Singular behaviour at the end of a tensile crack in a hardening material10.1016/0022-5096(68)90014-8 ↗
16. Plain-strain deformation near a crack tip in a power-law hardening material10.1016/0022-5096(68)90013-6 ↗
17. A phenomenological model fatigue macrocrack initiation near stress concentrators10.1046/j.1460-2695.1999.00098.x ↗
18. Crack propagation in high stress fatigue10.1080/14786436208212674 ↗
19. Progression markings, striations, and crack-arrest markings on fracture surfaces10.1016/j.msea.2006.09.083 ↗
20. Wu SC, Withers PJ, Xiao TQ. The imaging of failure in structural materials by synchrotron radiation X-ray microtomography. Eng Fract Mech; 2017 [Under review].10.1016/j.engfracmech.2017.07.027 ↗
21. Fatigue crack growth in metals and alloys: mechanisms and micromechanics10.1179/imr.1992.37.1.45 ↗
22. Structural fatigue crack growth on a representative volume element under cyclic strain behavior10.1016/j.ijfatigue.2014.12.009 ↗
23. Cyclic plastic strain based damage tolerance for railway axles in China10.1016/j.ijfatigue.2016.08.006 ↗
24. Three-dimensional elastic-plastic finite-element analyses of constraint variations in cracked bodies10.1016/0013-7944(93)90299-8 ↗
25. Estimation of the effects of plasticity and resulting crack closure during small fatigue crack growth10.1023/A:1007690904863 ↗
26. A crack opening stress equation for fatigue crack growth10.1007/BF00020751 ↗
27. On the fatigue performance of laser hybrid welded high Zn 7000 alloys for next generation railway components10.1016/j.ijfatigue.2016.05.017 ↗
28. Morrow JD. Cycle plastic strain energy and fatigue of metals. In: Internal friction, damping and cyclic plasticity, ASTM STP 378. Philadelphia, PA; 1965. p. 45–84.10.1520/STP43764S ↗
29. Bathias · 2010
30. Fatigue crack growth in railway axles: assessment concept and validation tests10.1016/j.engfracmech.2010.11.024 ↗
31. Singular and non-singular approaches for predicting fatigue crack growth behavior10.1016/j.ijfatigue.2005.07.018 ↗
32. Multiaxial fatigue evaluation using discriminating strain paths10.1016/j.ijfatigue.2010.11.002 ↗
33. Probabilistic models for long fatigue crack growth rates of LZ50 axle steel10.1007/BF02466423 ↗
34. Constant and variable amplitude fatigue behavior of five cast steels at room temperature and −45 °C10.1115/1.3225673 ↗
35. Dowling · 1999
36. The importance of compressive stresses on fatigue crack propagation rate10.1016/j.ijfatigue.2005.07.003 ↗
37. A two parameter driving force for fatigue crack growth analysis10.1016/j.ijfatigue.2005.07.002 ↗
38. Liu · 1998
39. Bèaumel · 1990