Prediction of Fatigue Crack Growth of Aeronautical Aluminum Alloy

In this paper fatigue crack growth behavior of aeronautical aluminum alloy 2024 T351 was studied. Effects of various loading and geometrical parameters are studied such as stress ratio, amplitude loading, etc. The fatigue crack growth with constant amplitude is studied using the AFGROW code when NASGRO model is used. The effect of the stress ratio is highlighted, where one notices a shift of the curves of crack growth. The comparative study between two orientations L-T and T-L on fatigue behavior are presented and shows the variation on the fatigue life. L-T orientation presents a good fatigue crack growth resistance. Effects of crack closure are shown in Paris domain and that no crack closure phenomenons are present at high stress intensity factor.




References:
[1] Hoeppner, D.W., "Industrial Significance of Fatigue Problems", ASM
Handbook, Fatigue and Fracture, vol. 19, p 1, 1996.
[2] Paris, P.C., Gomez, M.P., and Anderson, W.P., "A rational analytic
theory of fatigue", The Trend Eng, vol. 13, pp 9-14, 1961.
[3] Jones, R., Molent L., Pitt, S., and Siores, E., "Recent developments in
fatigue crack growth", In: Gdoutos EE, editor. Proceedings of the 16th
European conference on fracture, failure analysis of nano and
engineering materials and structures, July 3-7, Alexandroupolis,
Greece, 2006.
[4] Dinda, S., Kujawski, D., "Correlation and prediction of fatigue crack
growth for different R-ratios using Kmax and ΔK+ parameters", Eng Fract
Mech, Vol. 71, pp 779-790, 2004.
[5] Glinka, G., Kujawski, D., Tsakalakos, T., Croft, M., Holtz, R., and
Sadananda, K., "Analysis of fatigue crack growth using two driving
force parameters", In: Proceedings of the international conference on
fatigue damage of structural materials V, September 19-24, 2004,
Hyannis, Massachusetts, USA.
[6] Sarioğlu, F. and Orhaner, F.Ö., "Effect of prolonged heating at 130°C on
fatigue crack propagation", Materials Science and Engineering A, vol.
248, pp 115-119, 1998.
[7] Huang, J.C., Shin, C.S. and Chan, S.L.I., "Effect of temper, specimen
orientation and test temperature on tensile and fatigue properties of
wrought and PM AA6061-alloy", Int. J. of Fatigue, vol. 26, pp 691-703,
2004.
[8] Sinha, V., Mercer, C., Soboyejo, W.O., "An investigation of short and
long fatigue crack growth behaviour of Ti-6Al-4V", Materials Science
and Engineering A, Vol. 287, pp 30-42, 2000.
[9] Forman, R.G., Mettu, S.R., "Behavior of surface and corner cracks
subjected to tensile and bending loads in Ti-6Al-4V alloy", Fracture
Mechanics 22nd Symposium, vol. 1, ASTM STP 1131, H.A. Saxena and
D.L. McDowell, Eds., 1992. American Society for Testing and
Materials, Philadelphia.
[10] Elber, W., "Fatigue crack closure under cyclic tension", Eng. Fract.
Mech., Vol. 2, pp 37-45, 1970.
[11] Skorupa, M., Machniewicz, T., Schijve and J., Skorupa, A., "Application
of the strip-yield model from the NASGRO software to predict fatigue
crack growth in aluminium alloys under constant and variable amplitude
loading", Engineering Fracture Mechanics, Vol. 74, pp 291-313, 2007.
[12] Harter, J.A., "AFGROW users guide and technical manual: AFGROW
for Windows 2K/XP", Version 4.0011.14., Air Force Research
Laboratory, 2006.
[13] Tada, H., Paris, P.C., and Irwin, G.R., "The Stress Analysis of Cracks
Handbook", Second Edition, p. 211, 1985. Paris Productions, Inc., St
Louis, MO.
[14] Srivastava, Y. P., and Garg, B. L., "Influence of R on effective stress
range ratio and crack growth", Engineering Fracture Mechanics, Vol.
22(6), pp 915-926, 1985.
[15] R. W. Lucky, "Automatic equalization for digital communication," Bell
Syst. Tech. J., vol. 44, no. 4, pp. 547-588, Apr. 1965.
[16] S. P. Bingulac, "On the compatibility of adaptive controllers (Published
Conference Proceedings style)," in Proc. 4th Annu. Allerton Conf.
Circuits and Systems Theory, New York, 1994, pp. 8-16.
[17] G. R. Faulhaber, "Design of service systems with priority reservation,"
in Conf. Rec. 1995 IEEE Int. Conf. Communications, pp. 3-8.
[18] W. D. Doyle, "Magnetization reversal in films with biaxial anisotropy,"
in 1987 Proc. INTERMAG Conf., pp. 2.2-1-2.2-6.