GS12 Characterization of side-groove geometry of C(T) specimen used for creep crack growth test based on micro damage mechanics
Details
Creep crack growth tests using C(T) specimens are standardized by ASTM E1457. To realize uniform creep crack growth, C(T) specimens with side-groove are used for the tests. However, due to difference of creep ductility and creep crack growth behavior for each material, the optimum depth of side-groove has not been yet defined strictly. In this paper, to characterize the optimum depth of the side-groove, diffusion analysis of vacancy around a notch tip was conducted based on micro damage mechanics.
