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Experimental study on the rate dependent strength of ice-silica mixture with silica volume fractions up to 0.63
http://hdl.handle.net/2237/11706
http://hdl.handle.net/2237/117069f96aa78-8887-4dae-9cca-f61a69433aad
名前 / ファイル | ライセンス | アクション |
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yasui-grl-revise.pdf (125.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-05-08 | |||||
タイトル | ||||||
タイトル | Experimental study on the rate dependent strength of ice-silica mixture with silica volume fractions up to 0.63 | |||||
言語 | en | |||||
著者 |
Yasui, Minami
× Yasui, Minami× 保井, みなみ× Arakawa, Masahiko× 荒川, 政彦 |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述 | We conducted deformation experiments of ice-1 μm silica beads mixture to clarify the effects of silica beads volume fraction and temperature on the strength. The silica beads volume fraction was changed from 0 to 0.63 to simulate the surfaces of icy bodies. Unconfined uniaxial compression tests were made in a cold room at the temperatures from −10°C to −25°C and the constant strain rates ranged from 2.9 × 10−3 to 8.5 × 10−7 s−1. We determined the rate dependent strength of the mixture written by inline equation = A · σ max n from the relationship between the maximum stress, σ max, on the stress-strain curve and the applied strain rate, inline equation. At −10°C, the mixtures with silica volume fractions of 0.004–0.04 had almost the same strength with pure ice and the stress exponent, n, is about 3. On the other hands, at the silica volume fractions more than 0.15, the mixture became harder as the beads were more included, and it had the same stress exponent, about 6. This high stress exponent might be caused by crack generation. Also, we found that the A for silica volume fractions more than 0.15 was written by an exponential equation related to the silica volume fraction, φ , A = 6.86 × 10−8exp(−6.35 φ ). Furthermore, we found that the n of φ = 0.15 was independent of the temperature, and the brittle-ductile boundary of φ = 0.29 and 0.63 was more than 30°C higher than that of pure ice. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Geophysical Union | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0094-8276 | |||||
書誌情報 |
en : Geophysical Research Letters 巻 35, p. L12206-L12206, 発行日 2008-06-28 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/11706 | |||||
識別子タイプ | HDL |