| An approach for predicting creep, fatigue, and creep-fatigue crack growth interaction effects has been developed and evaluated. Experimental studies were performed on low-cycle fatigue, compact-type and center-cracked-tension specimens of Type 316 stainless steel in air at 593 and 649 C. The C*-integral and J-integral parameters have been used to characterize creep- and fatigue-crack growth, respectively. Both short (0.05 to 1.5 mm) and long (25 to 35 mm) cracks have been treated using this approach. A crack-tip-zone interaction model was employed to account for creep-fatigue interaction effects. Results from both this study and published literature showed good agreement with the model. |
