| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 298827 | Nuclear Engineering and Design | 2006 | 8 Pages |
In the present paper the crack behavior of multi-component material systems is investigated under extensive creep condition. The validation of the creep fracture parameters C* and C(t) is firstly examined at the microscale level. It is found that the C* value is no longer path-independent when mismatch inclusions are embedded into the matrix. To characterize the crack fields in inhomogeneous material the integral value defined at the crack tip as Ctip* is introduced to reflect the influence of the inclusion. The interaction effects between microcrack and inclusion are systematically calculated with respect to different mismatch factors, various inclusion locations and inclusion numbers. The analysis results show that the Ctip* value is not only influenced by the inclusion properties but also depends on the microstructure near the crack tip.
