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Notches bend specimens with the section size of 50×50 mm (medium size specimen) and 200×50 mm (large size specimens) were used. The notch of specimen was made using a thin razor blade embedded in the mold. Several tests were carried out at each test condition,and probabilistic nature of fracture toghness was also investigated. The results obtained are as follows. (1) The value of K_\u003cIc\u003e decreased as K_I increased, and there was a transition in the range of K_I≒10-100 kPam^\u003c1/2\u003e/s. The value of K_\u003cIc\u003e was not substantially affected by K_I in the high K_I region beyond the transition. (2) Scatter of K_\u003cIc\u003e for the large size specimens was considerably small compared with that for the medium size specimens. (3) The minimum value of K_\u003cIc\u003e was not affected by the specimen size in the low K_I range. 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大型試験片を用いた柱状結晶氷の破壊じん性の検討
http://hdl.handle.net/10069/24673
http://hdl.handle.net/10069/24673eb458929-5183-441e-9b8b-4345d27934c2
名前 / ファイル | ライセンス | アクション |
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JSMS35_887.pdf (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2011-03-08 | |||||
タイトル | ||||||
タイトル | 大型試験片を用いた柱状結晶氷の破壊じん性の検討 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 破壊じん性 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 負荷速度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 寸法効果 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 氷 | |||||
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 |
楠本, 韶
× 楠本, 韶× 木村, 宣夫× 高瀬, 徹× 木寺, 亨 |
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著者別名 | ||||||
姓名 | Kusumoto, Sho | |||||
著者別名 | ||||||
姓名 | Kimura, Nobuo | |||||
著者別名 | ||||||
姓名 | Takase, Tooru | |||||
著者別名 | ||||||
姓名 | Kidera, Tohru | |||||
その他のタイトル | ||||||
その他のタイトル | Study of Fracture Toughness of Columnar Grained Ice Using Large Specimens | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The effects of loading rate and specimen size on the fracture toughness K_<Ic> of columnar grained ice have been investigated at -10℃. Notches bend specimens with the section size of 50×50 mm (medium size specimen) and 200×50 mm (large size specimens) were used. The notch of specimen was made using a thin razor blade embedded in the mold. Several tests were carried out at each test condition,and probabilistic nature of fracture toghness was also investigated. The results obtained are as follows. (1) The value of K_<Ic> decreased as K_I increased, and there was a transition in the range of K_I≒10-100 kPam^<1/2>/s. The value of K_<Ic> was not substantially affected by K_I in the high K_I region beyond the transition. (2) Scatter of K_<Ic> for the large size specimens was considerably small compared with that for the medium size specimens. (3) The minimum value of K_<Ic> was not affected by the specimen size in the low K_I range. However, in the high K_I range, the minimum value of K_<Ic> of a large specimen showed a little higher value than that of a medium specimen. (4) The size effect was analyzed from the view point of the "weakest link theory". It was observed that the experimental data did not agree with the theoretical prediction in the range of low values of K_<Ic>. (5) The relation between K_I and K_<Ic> was compared with other experimental data on a similar kind of ice. Considerable difference in K_<Ic>, especially in the low loading rate range, was observed. The reason is not yet clear, and more studies are needed. | |||||
書誌情報 |
材料 en : Journal of the Society of Materials Science, Japan 巻 35, 号 395, p. 887-891, 発行日 1986-08-15 |
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出版者 | ||||||
出版者 | 日本材料学会 | |||||
出版者別言語 | ||||||
The Society of Materials Science, Japan | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 05145163 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00096175 | |||||
権利 | ||||||
権利情報 | Copyright© 日本材料学会 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 材料, 35(395), pp.887-891; 1986 |