The Variation of Crack Energy Density (CED) on Creep Crack Growth


Article Preview

Creep crack growth (CCG) rate has been organized frequently by C* or Ct parameter However, crack behavior of early stage under unsteady state condition has not been explained. Crack energy density (CED), which has been proposed as a parameter that can provide a unified description of crack behavior with no restriction on constitutive equation, can give the general expression about creep crack growth rate. By applying Ct and the concept of CED to the results, we showed that creep crack growth rate for all ranges of creep can be explained in a unified way by CED and its derivatives. Moreover, the physical meaning of the Ct is clarified in the discussion.



Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie




C.S. Jeong et al., "The Variation of Crack Energy Density (CED) on Creep Crack Growth", Key Engineering Materials, Vols. 353-358, pp. 106-109, 2007

Online since:

September 2007




[1] J. D. Landes and J. A. Begley: ASTM STP Vol. 590 (1976) 128-148.

[2] K. Ohji, K. Ogura, S. Kubo: Jap. Soc. Mech. Engrs Vol. 790 (1978) 18-20.

[3] K. M. Nikbin, D. J. Smith: Trans ASME, J. Eng. Mat. Tech. Vol. 108 (1986) 186-191.

[4] A. Fuji, M. Kitagawa, A. T. Yokobori: Eng. Frac. Mech. Vol. 45 (1993) 39-50.

[5] K. M. Nikbin, M. Yatomi, K. Wasmer, G. A. Webster: Pressure Vessels and Piping Vol. 80 (2003) 585-595.

[6] B. Wilshire, T. D. Lieu: Mater. Sci. Eng. A Vol. 386 (2004) 81-90.

[7] K. Watanabe: Bulletin of the JSME. Vol. 24-198(1981) 2059-(2066).

[8] K. Watanabe: Bulletin of the JSME. Vol. 26-215(1983) 747-754.

[9] K. Watanabe: Bulletin of the JSME. Vol. 28-235(1985) 26-33.

[10] K. Watanabe, Y. Kurashige: Bulletin of the JSME. Vol. 28-242 (1985) 1582-1593.

[11] K. Watanabe, M. Tsugai: Bulletin of the JSME. Vol. 29-249 (1986) 693-700.

[12] A. Saxena: Eng. Frac. Mech. Vol. 40 (1991) 721-736.

[13] M. Tabuchi, K. Kubo, K. Yagi, A. T. Yokobori Jr, A. Fuji: Eng. Frac. Mech. 62 (1999) 47-60.