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Kolvin I, Cohen G, Fineberg J. Topological defects govern crack front motion and facet formation on broken surfaces. Nat Mater. 2017;17(2):140-144doi: 10.1038/nmat5008.
Kolvin, I., Cohen, G., & Fineberg, J. (2018). Topological defects govern crack front motion and facet formation on broken surfaces. Nature materials, 17(2), 140-144. https://doi.org/10.1038/nmat5008
Kolvin, Itamar, et al. "Topological defects govern crack front motion and facet formation on broken surfaces." Nature materials vol. 17,2 (2018): 140-144. doi: https://doi.org/10.1038/nmat5008
Kolvin I, Cohen G, Fineberg J. Topological defects govern crack front motion and facet formation on broken surfaces. Nat Mater. 2018 Feb;17(2):140-144. doi: 10.1038/nmat5008. Epub 2017 Oct 16. PMID: 29035358.
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Nat Mater. 2018 Feb;17(2):140-144. doi: 10.1038/nmat5008. Epub 2017 Oct 16.

Topological defects govern crack front motion and facet formation on broken surfaces.

Nature materials

Itamar Kolvin, Gil Cohen, Jay Fineberg

Affiliations

  1. The Racah Institute of Physics, the Hebrew University of Jerusalem, Jerusalem 9190401, Israel.

PMID: 29035358 DOI: 10.1038/nmat5008

Abstract

Cracks develop intricate patterns on the surfaces that they create. As faceted fracture surfaces are commonly formed by slow tensile cracks in both crystalline and amorphous materials, facet formation and structure cannot reflect microscopic order. Although fracture mechanics predict that slow crack fronts should be straight and form mirror-like surfaces, facet-forming fronts propagate simultaneously within different planes separated by steps. Here we show that these steps are topological defects of crack fronts and that crack front separation into disconnected overlapping segments provides the condition for step stability. Real-time imaging of propagating crack fronts combined with surface measurements shows that crack dynamics are governed by localized steps that drift at a constant angle to the local front propagation direction while their increased dissipation couples to long-ranged elasticity to determine front shapes. We study how three-dimensional topology couples to two-dimensional fracture dynamics to provide a fundamental picture of how patterned surfaces are generated.

References

  1. Phys Rev Lett. 2013 Jan 4;110(1):014302 - PubMed
  2. Phys Rev Lett. 2008 May 2;100(17):178303 - PubMed
  3. Phys Rev Lett. 2015 May 1;114(17):175501 - PubMed
  4. Phys Rev E Stat Nonlin Soft Matter Phys. 2005 May;71(5 Pt 2):056118 - PubMed
  5. Phys Rev Lett. 2004 Oct 29;93(18):185502 - PubMed
  6. Phys Rev Lett. 2015 Feb 6;114(5):054301 - PubMed
  7. Phys Rev Lett. 2015 Dec 31;115(26):265503 - PubMed
  8. Phys Rev Lett. 2011 Sep 30;107(14):144301 - PubMed
  9. Phys Rev Lett. 2005 Jun 10;94(22):224301 - PubMed
  10. Phys Rev Lett. 2008 Dec 31;101(26):264302 - PubMed
  11. Nature. 2010 Mar 4;464(7285):85-9 - PubMed
  12. Phys Rev Lett. 2006 Jan 27;96(3):035506 - PubMed
  13. Phys Rev Lett. 2010 Mar 19;104(11):114301 - PubMed

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