Abstract
I HAVE shown1 that glass rods with normally damaged surfaces, and subjected to sustained loading, fracture in equal times when subjected to numerically equal prior principal stresses, in bending, torsion and radial fluid pressure. The term prior stress refers to the stress distribution which exists before any cracking has occurred. I interpreted these results in terms of quasistatic crack growth with consequent increase in the stress concentration at the ends of the cracks, and I now re-interpret them in terms of work based fracture mechanics theory.
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Gurney, C., Nature, 161, 729 (1948).
Gurney, C., and Hunt, J., Proc. Roy. Soc., A, 299, 508 (1967).
Shand, E. B., J. Amer. Ceram. Soc., 44, 21 (1961).
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GURNEY, C. Fracture in Bending, Torsion and Radial Pressure. Nature 220, 61 (1968). https://doi.org/10.1038/220061a0
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DOI: https://doi.org/10.1038/220061a0
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