Cracks in mixed mode condition are very common due to the stochastic nature of cracks and loadings. There are a number of criteria proposed for determination of the critical load and crack kinking angle in mixed-mode conditions. A detailed investigation of the widely accepted crack propagation criteria is presented and compared with experimental results available in the literature. It is shown that despite many criticisms and corrections, maximum tangential stress criterion still has a very good agreement with experiment and can be used to predict critical load. The deviations between different methods in predicting kinking angle are not significant, irrespective of dominant mode of crack.
ErdoganF. and SihG.C., On the crack extension in plates under plane loading and transverse shear, J. Basic Eng Trans ASME85 (1963), 519–525. doi:10.1115/1.3656897.
2.
SihG.C., Strain energy density factor applied to mixed mode crack problems, Int J Fract10 (1974), 305–321. doi:10.1007/BF00035493.
3.
HussainM.A.PuE.L. and UnderwoodJ.H., Strain energy release rate for a crack under combined Mode-I and Mode-II, ASTM STP 560, 1974, pp. 2–28.
4.
HayashiK. and Nemat-NasserS., Energy release rate and crack kinking under combined loading, Trans. ASME48 (1981), 520–524. doi:10.1115/1.3157666.
5.
HeM.Y. and HutchinsonJ.W., Kinking of a crack out of an interface, Trans ASME56 (1989), 270–278. doi:10.1115/1.3176078.
6.
CottrellB. and RiceJ.R., Slightly curved or kinked cracks, Int J Fract16(2) (1980), 159–169.
7.
YokoboriT.YokoboriA.T.Jr.SatoK. and OmotaniM., The effects of ferrite grain size on fracture of low carbon steel under mixed mode I and II, Fracture Mech Eng17(1) (1983), 75–85. doi:10.1016/0013-7944(83)90024-3.
8.
PapadopoulosG.A., Crack initiation under biaxial loading, Eng Fract Mech5(29) (1988), 585–598. doi:10.1016/0013-7944(88)90182-8.
9.
KhanS.M.A. and KhraishehM.K., Analysis of mixed mode crack initiation angles under various loading conditions, Eng Fract Mech67 (2000), 397–419. doi:10.1016/S0013-7944(00)00068-0.
10.
HassanpourR. and ChoupaniN., Mixed-mode study of rock fracture mechanics by using the modified Arcan spacemen test, World Academy of Science, Eng and Tech41 (2008), 764–769.
