Method to Estimate Crack-Tip Toughness from Bending Tests on Prenotched Bars |
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| Authors: | Theo Fett Dietrich Munz Gerhard Thun |
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| Affiliation: | Forschungszentrum Karlsruhe, Institut für Materialforschung II, D-76021 Karlsruhe, Germany |
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| Abstract: | A strain-gauge procedure that enables determination of the crack-tip toughness ( K I0) from bending-strength tests is described. The procedure is applied to coarse-grained alumina and yields an average K I0 value of 2.51 MPa·m1/2, with a standard deviation of 0.16 MPa·m1/2. |
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| Keywords: | crack tip fracture toughness bending |
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