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Estimation of Fracture Toughness of Anisotropic Rocks by Semi-Circular Bend (SCB) Tests Under Water Vapor Pressure
http://hdl.handle.net/2298/42021
http://hdl.handle.net/2298/420216603927a-9253-483f-ae54-4aa429bd3c55
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
166-RMRE14.Kataoka.pdf (4.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2019-04-01 | |||||
| タイトル | ||||||
| タイトル | Estimation of Fracture Toughness of Anisotropic Rocks by Semi-Circular Bend (SCB) Tests Under Water Vapor Pressure | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題 | Anisotropic rock, Elastic wave velocity, Mode I fracture toughness, Semi-circular bend (SCB) test, Water vapor pressure, X-ray CT method | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
片岡, みなみ
× 片岡, みなみ× 尾原, 祐三× Kuruppu, Mahinda |
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| 別言語の著者 |
片岡, みなみ
× 片岡, みなみ× 尾原, 祐三 |
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| 内容記述 | ||||||
| 内容記述 | In order to investigate the influence of water vapor pressure in the surrounding environment on mode I fracture toughness (K Ic) of rocks, semi-circular bend (SCB) tests under various water vapor pressures were conducted. Water vapor is one of the most effective agents which promote stress corrosion of rocks. The range of water vapor pressure used was 10−2 to 103 Pa, and two anisotropic rock types, African granodiorite and Korean granite, were used in this work. The measurement of elastic wave velocity and observation of thin sections of these rocks were performed to investigate the microstructures of the rocks. It was found that the distribution of inherent microcracks and grains have a preferred orientation. Two types of specimens in different orientations, namely Type-1 and Type-3, were prepared based on the anisotropy identified by the differences in the elastic wave velocity. K Ic of both rock types was dependent on the water vapor pressure in the surrounding environment and decreased with increasing water vapor pressure. It was found that the degree of the dependence is influenced by the orientation and density of inherent microcracks. The experimental results also showed that K Ic depended on the material anisotropy. A fracture process was discussed on the basis of the geometry of fractures within fractured specimens visualized by the X-ray computed tomography (CT) method. It was concluded that the dominant factor causing the anisotropy of K Ic is the distribution of grains rather than inherent microcracks in these rocks. | |||||
| 書誌情報 |
Rock Mechanics and Rock Engineering 巻 48, 号 4, p. 1353-1367, 発行年 2014-08-27 |
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| ISSN | ||||||
| 収録物識別子 | 07232632 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA10636222 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 関連識別子 | 10.1007/s00603-014-0665-y | |||||
| 権利 | ||||||
| 権利情報 | © Springer-Verlag Wien 2014 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 形態 | ||||||
| 4258999 bytes | ||||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 560 | |||||
| 出版者 | ||||||
| 出版者 | Springer Vienna | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 論文(Article) | |||||
| 資源タイプ・ローカル | ||||||
| 雑誌掲載論文 | ||||||
| 資源タイプ・NII | ||||||
| Journal Article | ||||||
| 資源タイプ・DCMI | ||||||
| text | ||||||
| 資源タイプ・ローカル表示コード | ||||||
| 01 | ||||||
| URL | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | https://link.springer.com/article/10.1007/s00603-014-0665-y | |||||
