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- Ariel Livne
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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- Eran Bouchbinder
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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- Ilya Svetlizky
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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- Jay Fineberg
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
書誌事項
- 公開日
- 2010-03-12
- DOI
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- 10.1126/science.1180476
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:title>Slightly Cracked</jats:title> <jats:p> While there are detailed theories to explain the propagation of a crack in the bulk of a material, our understanding of cracking breaks down near the tip of the crack. Experimentally, it is very hard to observe the propagation of a crack at the tip region because it tends to move very quickly. <jats:bold> Livne <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1359" related-article-type="in-this-issue" vol="327" xlink:href="10.1126/science.1180476">1359</jats:related-article> ) approached this problem by working with a polyacrylamide gel in which cracks progress slowly enough to monitor them. A hierarchy of linear and nonlinear regions was observed through which energy is transported before being dissipated by the growing crack. How stresses are distributed during cracking will determine whether the resulting failure will be brittle or ductile. </jats:p>
収録刊行物
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- Science
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Science 327 (5971), 1359-1363, 2010-03-12
American Association for the Advancement of Science (AAAS)
