Fracture of ceramics with surface flaws introduced by Knoop indentation |
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| Authors: | T. Fett |
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| Affiliation: | 1. Kernforschungszentrum Karlsruhe, Arbeitsgruppe Zuverl?ssigkeit und Schadenskunde am Institut für Reaktorbauelemente, West Germany
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| Abstract: | The crack opening behaviour of surface flaws in ceramic materials, produced by Knoop indentation tests, was investigated. The damaged region below the indenter tip was replaced by a wedge. The influence of this wedge is reduced, if tensile stresses are acting at the damaged surface. For alumina the wedging force in moment of fracture was found approximately 50% of its value without additional bending. |
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