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  1. D300 大学院環境学研究科
  2. D300a 雑誌掲載論文
  3. 学術雑誌

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/2237/11706
9f96aa78-8887-4dae-9cca-f61a69433aad
名前 / ファイル ライセンス アクション
yasui-grl-revise.pdf yasui-grl-revise.pdf (125.4 kB)
Item type 学術雑誌論文 / Journal Article(1)
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

WEKO 29872

en Yasui, Minami

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保井, みなみ

× 保井, みなみ

WEKO 29873

ja 保井, みなみ

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Arakawa, Masahiko

× Arakawa, Masahiko

WEKO 29874

en Arakawa, Masahiko

Search repository
荒川, 政彦

× 荒川, 政彦

WEKO 29875

ja 荒川, 政彦

Search repository
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
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
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