Fracture parameters proposed to characterise crack-tip fields for isotropic materials need to be extended to evaluate the crack growth behaviour of anisotropic materials such as directionally solidified and single crystal superalloys. In this study, an estimation equation for the C t -parameter is explained for transversely isotropic secondary creeping materials. In the previous study, a concept of equivalent creep coefficient A eq was analytically derived and values of correction factors, b andr r c , were also determined using finite element analysis. The proposed estimation equation for C t is now applied to evaluate the creep crack growth of a directionally solidified Ni base superalloy. The results showed the validity of the proposed equation and provided a criterion to evaluate the creep crack growth for anisotropic creeping materials.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.