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

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Abstract:

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.

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Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

106-109

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.106

Citation:

Cite this paper

Online since:

September 2007

Authors:

C.S. Jeong, Byeung Gun Nam, Katsuhiko Watanabe

Keywords:

C*, Crack Energy Destiny, Creep Crack Growth Rate (CCGR), Ct, Load Line Displacement Rate

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