| タイトル | Fracture toughness of polycrystalline ceramics in combined mode I and mode II loading |
| 著者（英） | Singh, Dileep; Shetty, Dinesh K. |
| 著者所属（英） | Utah Univ. |
| 発行日 | 1989-01-01 |
| 言語 | eng |
| 内容記述 | The present investigation of the fracture of alumina and zirconia polycrystalline ceramic specimens of precracked-disk type, in diametral compression, evaluated fracture toughness in pure mode I, combined mode I/mode II, and pure mode II, depending on the alignment of the center crack relative to the loading diameter. The mixed-mode fracture-toughness envelope thus obtained exhibits significant deviation to higher fracture toughness in mode II, relative to the predictions of linear elastic fracture mechanics theory. Crack-surface resistance due to grain-interlocking and abrasion are identified as the primary sources of increased fracture resistance in mode II loading of the polycrystalline ceramics. |
| NASA分類 | NONMETALLIC MATERIALS |
| レポートNO | 89A26457 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/365370 |
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