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Estimation of Fracture Toughness of Anisotropic Rocks by Semi-Circular Bend (SCB) Test Under Water Vapor Pressure
http://hdl.handle.net/2298/34865
http://hdl.handle.net/2298/34865f2a759dd-b4b9-49da-9af3-09fbfec1ffe7
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2016-07-05 | |||||
| タイトル | ||||||
| タイトル | Estimation of Fracture Toughness of Anisotropic Rocks by Semi-Circular Bend (SCB) Test 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 | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 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× クルップ, マヒンダ |
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| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | In order to investigate the influence of water vapor pressure in surrounding environment on mode I fracture toughness (KIc) of rocks, Semi-Circular Bend (SCB) tests under various water vapor pressures were conducted. The water vapor is one of the most effective agents which promote stress corrosion of rocks. The range of the water vapor pressure used was 10-2 to 103 Pa, and two anisotropic rock types, African granodiorite and Korean granite were used in this testing work. Measurement of elastic wave velocity and observation of thin sections of these rocks were performed to investigate the micro structures of the rocks. It was found that the distribution of inherent micro cracks 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 of the elastic wave velocity. KIc of the both rock types was dependent on the water vapor pressure in the surrounding environment and decreased with increasing the water vapor pressure. It was found that the degree of the dependence is influenced by the orientation and density of inherent micro cracks. The experimental results 2 also showed that KIc depended on the material anisotropy. A fracture process was discussed on the basis of the geometry of fractures within fractured specimens visualized by X-ray CT method. It was concluded that the dominant factor causing the anisotropy of KIc is the distribution of grains rather than inherent micro cracks in these rocks. | |||||
| 書誌情報 |
Rock Mechanics and Rock Engineering 巻 48, 号 4, p. 1353-1367, 発行年 2015-07 |
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| ISSN | ||||||
| 収録物識別子 | 07232632 | |||||
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| 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 International Publishing AG | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 形態 | ||||||
| 値 | 1446363 bytes | |||||
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| 値 | 45098 bytes | |||||
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| 値 | 88116 bytes | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 458 | |||||
| 出版者 | ||||||
| 出版者 | Springer Vienna | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | 論文(Article) | |||||
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| 値 | 雑誌掲載論文 | |||||
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| 値 | Journal Article | |||||
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| 値 | text | |||||
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| 値 | 01 | |||||
| URL | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | http://link.springer.com/article/10.1007/s00603-014-0665-y | |||||
| コメント | ||||||
| 値 | The final publication is available at Springer via http://dx.doi.org/10.1007/s00603-014-0665-y.\【著者所属】熊本大学大学院自然科学研究科 社会環境工学科 | |||||
