Abstract
Of the parameters which characterise conditions at the crack tip, those which can be accurately calculated are contour integrals around the tip. For a viscous material an integral C* is most appropriate. For solids which creep, other integrals, which are valid in the non-steady state case, have more physical significance, may be more readily determined from stress analysis results, and for steady state secondary creep tend to a value very close to that of C*. To find out which integral provides the best correlation for ½CrMoV Steel several such integrals are computed for compact tension specimens of this material, under both load and displacement controlled loading using data on crack growth at 838K.
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© 1989 Elsevier Science Publishers Ltd
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Blackburn, W.S. (1989). Contour Integrals For Creep Crack Growth Analysis. In: Cocks, A.C.F., Ponter, A.R.S. (eds) Mechanics of Creep Brittle Materials 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1117-8_3
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DOI: https://doi.org/10.1007/978-94-009-1117-8_3
Publisher Name: Springer, Dordrecht
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