Spiral cracks without twisting

Details Spiral cracks without twisting Spiral cracks without twisting

2001-03-09

arxiv.org/abs/cond-mat/0103221v1

Nature, vol.410 pp.166 (8 March 2001)

Physics

Condensed Matter

Materials Science

4 pages, 1 figure

Scientific paper

A fascinating class of patterns, often encountered in nature as meandering cracks on rocks, dried-out fields and tectonic plates is produced by the fracture of solids. Here we report the observation and modeling of an unusual type of patterns consisting of spiral cracks within fragments of a thin layer of drying precipitate. We find that this symmetry-breaking cracking mode arises naturally not from twisting forces, but from a propagating stress front induced by the fold-up of the fragments.

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