| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 771175 | Engineering Fracture Mechanics | 2011 | 13 Pages |
Abstract
In this paper, the C(t) and C∗ integrals, stress redistribution time tred and creep crack-tip stress distributions in the CT specimens with various crack depths have been calculated by the finite element method (FEM), and the creep constraint induced by crack depths are quantitatively investigated in detail. The results show that the creep constraint could be characterized by the new constraint parameter R. The constraint effect induced by crack depths at non-steady-state creep is more pronounced than that at steady-state creep. The effects of the crack depths, load levels (C∗) and distances from the crack tips on the creep constraint parameter R are analyzed.
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Authors
P.J. Sun, G.Z. Wang, F.Z. Xuan, S.T. Tu, Z.D. Wang,