MISC

1993年3月

TRANSITION BETWEEN CRACK PATTERNS IN QUENCHED GLASS PLATES

NATURE
  • A YUSE
  • ,
  • M SANO

362
6418
開始ページ
329
終了ページ
331
記述言語
英語
掲載種別
DOI
10.1038/362329a0
出版者・発行元
MACMILLAN MAGAZINES LTD

THE study of fracture is an old topic1, but only recently has an understanding begun to emerge of crack formation, propagation and morphology (which is often fractal)2-8. When a brittle material such as glass is broken under tensile stress9, the cracks have a complicated morphology10. Fineberg et al.11 showed that this process may be caused by a dynamic instability, whereby the speed of crack propagation increases until it approaches the speed of sound: at this point, complex structures appear. But crack morphology in quasi-static fracture, where the speed of the crack tip is much smaller than the speed of sound, can also exhibit marked changes12. Here we present studies of crack propagation in glass plates caused by sudden but carefully controlled cooling. We observe a transition from straight to regular, wavy cracks as the tip speed increases. The scaling behaviour of an appropriately defined relaxation time suggests that this transition is a Hopf bifurcation13, like those seen in a variety of other nonlinear systems. At still higher speeds, the oscillatory cracks split into first two and then four or more branches.


リンク情報
DOI
https://doi.org/10.1038/362329a0
CiNii Articles
http://ci.nii.ac.jp/naid/10020734678
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:A1993KU17600054&DestApp=WOS_CPL
ID情報
  • DOI : 10.1038/362329a0
  • ISSN : 0028-0836
  • CiNii Articles ID : 10020734678
  • Web of Science ID : WOS:A1993KU17600054

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