This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Load Interaction Effects on FCG: Master Curve Approach
Technical Paper
2007-01-3676
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The majority of fatigue crack growth (FCG) data associated with load interaction effects have been interpreted in terms of plasticity effects at the crack wake. This paper presents a new approach by which the FCG behavior for different R-ratios can be predicted using the master curve. In this approach, the stress intensity factor (SIF) range, ΔK, is normalized in terms of ΔK at R=0. The corresponding mean value of SIF, Km, is normalized by the SIF amplitude, Ka. A curve is plotted for this normalized SIF data, which collapses all the R-ratios into a master curve and therefore enables the prediction of other R-ratios. From the analyses of different materials taken from literature it is demonstrated that the master curve approach is very effective in predicting the R-ratio effects on fatigue crack growth behavior.
Topic
Citation
Kujawski, D. and Dinda, S., "Load Interaction Effects on FCG: Master Curve Approach," SAE Technical Paper 2007-01-3676, 2007, https://doi.org/10.4271/2007-01-3676.Also In
References
- Walker K The effect of stress ratio during crack propagation and fatigue for 2024-T3 and 7075-T6 aluminum Effects of Environment and Complete Loading History On Fatigue Life Philadelphia, PA American Society for Testing and Materials 1970 1 14
- Elber V The significance of fatigue crack closure Damage Tolerance in Aircraft Structures Philadelphia, PA American Society for Testing and Materials 1971 230 242
- Donald K Paris PC An evaluation of ΔK eff estimation procedure on 6061-T6 and 2024-T3 aluminum alloys Int J Fatigue 1999 21 S47 S57
- Paris PC Tada H Donald JK Service load fatigue damage-a historical perspective Int J fatigue 1999 21 S35 S46
- Kujawski D A fatigue crack driving force parameter with load ratio effects Int J. Fatigue 23 2001 S239 S246
- Kujawski D Ellyin F A unified approach to mean stress effect on fatigue threshold conditions Int J. Fatigue 17 1995 101 106
- Chen DL Weiss B Stickler R Effect of stress ratio and loading condition on the fatigue threshold; Int. J. Fatigue 14 1992 325 329
- Ritchie RO Boyce BL Campbell JP Roder O Thompson AW Milligan WW Thresholds for high-cycle fatigue in a turbine engine Ti-6A1-4V alloy Int. J. Fatigue 21 1999 653 662
- Jha SK Ravichandran KS Effect of mean stress (stress ratio) and aging on fatigue-crack growth in a metastable beta titanium alloy, Ti-10V-2Fe-3Al Metallurgical Mater. Trans. 31A March 2000 703
- Chang T Guo W Effects of strain hardening and stress state on fatigue crack closure Int. J. Fatigue 21 1999 881 888
- Zhen J Powell BE Effect of stress ratio and test methods on fatigue crack growth rate for nickel based superalloy Udimet 720 Int J of Fatigue 21 1999 507 513
- Dennis KR Fatigue crack growth of gun tube steel under spectrum loading MS Thesis Engineering Science and Mechanical Dept. Virginia Polytechnic Institute and State University Blacksburg, VA May 1986
- Bulloch JH Effect of temperature on the threshold fatigue crack growth behavior of spheroidal graphite cast iron Int. J. Pres. Ves. & Piping 54 1993 497 522
- Dinda S Correlation and prediction of fatigue crack growth rate for different R-ratios MS Thesis Department of Mechanical and Aeronautical Engineering, Western Michigan University Kalamazoo, Michigan July 2002