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Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces
We present a subcritical fracture growth model, coupled with the elastic redistribution of the acting mechanical stress along rugous rupture fronts. We show the ability of this model to quantitatively reproduce the intermittent dynamics of cracks propagating along weak disordered interfaces. To this...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8516960/ https://www.ncbi.nlm.nih.gov/pubmed/34650113 http://dx.doi.org/10.1038/s41598-021-98556-x |
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author | Vincent-Dospital, Tom Cochard, Alain Santucci, Stéphane Måløy, Knut Jørgen Toussaint, Renaud |
author_facet | Vincent-Dospital, Tom Cochard, Alain Santucci, Stéphane Måløy, Knut Jørgen Toussaint, Renaud |
author_sort | Vincent-Dospital, Tom |
collection | PubMed |
description | We present a subcritical fracture growth model, coupled with the elastic redistribution of the acting mechanical stress along rugous rupture fronts. We show the ability of this model to quantitatively reproduce the intermittent dynamics of cracks propagating along weak disordered interfaces. To this end, we assume that the fracture energy of such interfaces (in the sense of a critical energy release rate) follows a spatially correlated normal distribution. We compare various statistical features from the obtained fracture dynamics to that from cracks propagating in sintered polymethylmethacrylate (PMMA) interfaces. In previous works, it has been demonstrated that such an approach could reproduce the mean advance of fractures and their local front velocity distribution. Here, we go further by showing that the proposed model also quantitatively accounts for the complex self-affine scaling morphology of crack fronts and their temporal evolution, for the spatial and temporal correlations of the local velocity fields and for the avalanches size distribution of the intermittent growth dynamics. We thus provide new evidence that an Arrhenius-like subcritical growth is particularly suitable for the description of creeping cracks. |
format | Online Article Text |
id | pubmed-8516960 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-85169602021-10-15 Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces Vincent-Dospital, Tom Cochard, Alain Santucci, Stéphane Måløy, Knut Jørgen Toussaint, Renaud Sci Rep Article We present a subcritical fracture growth model, coupled with the elastic redistribution of the acting mechanical stress along rugous rupture fronts. We show the ability of this model to quantitatively reproduce the intermittent dynamics of cracks propagating along weak disordered interfaces. To this end, we assume that the fracture energy of such interfaces (in the sense of a critical energy release rate) follows a spatially correlated normal distribution. We compare various statistical features from the obtained fracture dynamics to that from cracks propagating in sintered polymethylmethacrylate (PMMA) interfaces. In previous works, it has been demonstrated that such an approach could reproduce the mean advance of fractures and their local front velocity distribution. Here, we go further by showing that the proposed model also quantitatively accounts for the complex self-affine scaling morphology of crack fronts and their temporal evolution, for the spatial and temporal correlations of the local velocity fields and for the avalanches size distribution of the intermittent growth dynamics. We thus provide new evidence that an Arrhenius-like subcritical growth is particularly suitable for the description of creeping cracks. Nature Publishing Group UK 2021-10-14 /pmc/articles/PMC8516960/ /pubmed/34650113 http://dx.doi.org/10.1038/s41598-021-98556-x Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Vincent-Dospital, Tom Cochard, Alain Santucci, Stéphane Måløy, Knut Jørgen Toussaint, Renaud Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
title | Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
title_full | Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
title_fullStr | Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
title_full_unstemmed | Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
title_short | Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
title_sort | thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8516960/ https://www.ncbi.nlm.nih.gov/pubmed/34650113 http://dx.doi.org/10.1038/s41598-021-98556-x |
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