An analysis of creep crack growth of interface cracks in layered/graded materials | Zendy

S.B. Biner | Zendy

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An analysis of creep crack growth of interface cracks in layered/graded materials

Author(s) -

S.B. Biner

Publication year - 1997

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/505289

Subject(s) - creep , materials science , cavitation , composite material , stress field , stress (linguistics) , structural engineering , mechanics , finite element method , engineering , linguistics , philosophy , physics

In this study, the growth behavior of interface cracks in bimaterials and in layered materials resulting from the creep cavitation was studied. The growth model includes the effects of material deposition resulting from the growth of creep cavities on the crack tip stress fields. The results indicate that in layered materials under identical applied loading, the location of the interface crack strongly influence the amplitude of the stress field at steady-state. Due to large variation in the distribution of the stresses ahead of the interface cracks at creep regime, depending upon the crack location, the creep crack growth rates will be significantly different from each other under identical loading for a given layered material

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