Abstract
In the present work, mode I and mode II tests were carried out on two low alloyed high strength steels. An asymmetrical four point bend specimen and J II-integral vs. crack growth resistance curve technique were used for determining the mode II elastic-plastic fracture toughness, J IIc · J II-integral expression of the specimen was calibrated by finite element method. The results indicate that the present procedure for determining the J IIc values is easy to use. Moreover, the mode I fracture toughness J Ic is very sensitive to the rolling direction of the test steels, but the mode II fracture toughness J IIc is completely insensitive to the rolling direction of the steels, and the J IIc /J Ic ratio is not a constant for the two steels, including the same steel with different orientations. Finally, the difference of the fracture toughness between the mode I and mode II is discussed with consideration of the different fracture mechanisms.
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References
D.L. Jones and D.B. Chisholm, Engineering Fracture Mechanics 7 (1975) 261–270.
Y.W. Mai and B. Cotterell, Advances in Fracture Research, K. Salama et al. (eds.), Pergamon Press (1989) 2269–2278.
L. Banks-Sills and D. Sherman, International Journal of Fracture 50 (1991) 15–26.
J.G. Cowie and F.R. Tuler, International Journal of Fracture 47 (1991) 229–239.
T. Fett, International Journal of Fracture 48 (1991) R67-R74.
K.J. Wang, C.L. Hsu and H. Kao, in Advances in Research on the Strength and Fracture of Materials, D.M.R. Taplin (ed.) Vol. 4, Pergamon Press (1977) 123–133.
H. Gao, M.W. Brown and K.J. Miller, Fatigue and Fracture of Engineering Materials and Structures 5 (1982) 1–17.
ASTM E813-87, Standard test method for J Ic , a measure of fracture toughness (1987).
M.K. Tseng and H.L. Marcus, Engineering Fracture Mechanics 16 (1982) 895–903.
Y.W. Shi, Z.X. Han, N.N. Zhou and J. Li, Engineering Fracture Mechanics 41 (1992) 143–151.
C.F. Shih, Fracture Analysis, ASTM STP 560 (1974) 187–210.
J.T. Barnby, Y.W. Shi and A.S. Nadkarni, International Journal of Fracture 25 (1984) 273–283.
Y.W. Shi, J.T. Barnby and A.S. Nadkarni, Engineering Fracture Mechanics 39 (1991) 37–44.
S.H. Goods and L.M. Brown, Acta Metallurgica 27 (1979) 1–15.
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Shi, Y.W., Zhou, N.N. & Zhang, J.X. Comparison of mode I and mode II elastic-plastic fracture toughness for two low alloyed high strength steels. Int J Fract 68, 89–97 (1994). https://doi.org/10.1007/BF00032328
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DOI: https://doi.org/10.1007/BF00032328