Fracture stress-mirror size relations for polycrystalline ceramics
Several polycrystalline ceramics were fractured at room temp. and the fracture-mirror radii were measured. The slopes of curves of fracture stress vs. (mirror radius) sup -1/2 correlate directly with Young's modulus. Comparison of results from strength tests and delayed-fracture tests failed to...
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| Veröffentlicht in: | Philosophical magazine (Abingdon, England) England), 1976-01, Vol.33 (5), p.775-780 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Several polycrystalline ceramics were fractured at room temp. and the fracture-mirror radii were measured. The slopes of curves of fracture stress vs. (mirror radius) sup -1/2 correlate directly with Young's modulus. Comparison of results from strength tests and delayed-fracture tests failed to reveal a loading-rate dependence of the above slopes. Implications of these observations are discussed and a more specific criterion for mirror-boundary formation is suggested. |
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| ISSN: | 1478-6435 |