Abstract
The fracture mechanics of homogeneous materials is now well understood at temperatures below the creep range in terms of the stress intensity factor K and the J-integral. Practical structural integrity assessments of structures containing defects may then be carried out using the R6 procedure [1] and are equivalent to a J analysis of the structure. At high temperatures, the creep equivalent of J, the so-called C* integral [2], describes the stress and strain-rate fields close to the crack tip in widespread creep conditions and hence governs crack growth. For assessments of defective structures, estimates of C* may be combined with crack growth rate data a(C*) from simple specimen tests to estimate creep crack growth using the R5 procedure [3].
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References
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© 1997 Springer Science+Business Media Dordrecht
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O’Dowd, N.P., Budden, P.J., Griffiths, E.R.J. (1997). Finite Element Analysis of a Bi-Material Sent Specimen Under Elastic-plastic Loading. In: Willis, J.R. (eds) IUTAM Symposium on Nonlinear Analysis of Fracture. Solid Mechanics and its Applications, vol 49. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5642-4_4
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DOI: https://doi.org/10.1007/978-94-011-5642-4_4
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