Abstract
Creep fracture process in usual polycrystalline materials is brought about by nucleation, growth and coalescence of distributed grain-boundary cavities in front of a crack-tip, and this damage field gives significant influence on the stress field near the crack-tip. The analyses of the effects of material damage on the stress and strain fields near a crack-tip in non-linear creep materials, therefore, have been discussed in a number of papers (Bassani and Hawk [1]; Astafjev, Grigorova and Pastukhov [2]; Astafjev and Grigorova [3]; Lu, Lee, Kim and Mai [4]). However, because of difficulties of the stress-damage coupled analysis, they could not derive complete and consistent results [2–4], nor could obtain systematic information about the effects of material damage on the asymptotic crack-tip fields [1].
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References
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Murakami, S., Hirano, T., Liu, Y. (2001). Effects of Damage on the Asymptotic Fields of a Mode I Creep Crack in Steady-State Growth. In: Murakami, S., Ohno, N. (eds) IUTAM Symposium on Creep in Structures. Solid Mechanics and its Applications, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9628-2_17
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DOI: https://doi.org/10.1007/978-94-015-9628-2_17
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