Static and Cyclic Fatigue Behavior of a Polycrystalline Alumina |
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| Authors: | D A KROHN D P H HASSELMAN |
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| Affiliation: | Physical Ceramics Laboratory, Materials Research Center, and Department of Metallurgy and Materials Science, Lehigh University, Bethlehem, Pennsylvania 18015 |
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| Abstract: | The fatigue behavior of a polycrystalline alumina was investigated. Stress conditions consisted of a static tensile stress and a static tensile stress with superposed sinusoidal cyclic stress. The alumina exhibited the expected static fatigue behavior; a cyclic fatigue effect characterized by a frequency and amplitude dependence was also observed. Possible mechanisms of cyclic fatigue in brittle materials are discussed. |
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