Can crack front waves explain the roughness of cracks?
We review recent theoretical progress on the dynamics of brittle crack fronts and its relationship to the roughness of fracture surfaces. We discuss the possibility that the small scale roughness of cracks, which is characterized by a roughness exponent ≃0.5, could be caused by the generation, durin...
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| Veröffentlicht in: | Journal of the mechanics and physics of solids 2002-08, Vol.50 (8), p.1703-1725 |
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| container_end_page | 1725 |
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| container_issue | 8 |
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| container_title | Journal of the mechanics and physics of solids |
| container_volume | 50 |
| creator | Bouchaud, E. Bouchaud, J.P. Fisher, D.S. Ramanathan, S. Rice, J.R. |
| description | We review recent theoretical progress on the dynamics of brittle crack fronts and its relationship to the roughness of fracture surfaces. We discuss the possibility that the small scale roughness of cracks, which is characterized by a roughness exponent ≃0.5, could be caused by the generation, during local instabilities by depinning, of diffusively broadened corrugation waves, which have recently been observed to propagate elastically along moving crack fronts. We find that the theory agrees plausibly with the orders of magnitude observed. Various consequences and limitations, as well as alternative explanations, are discussed. We argue that another mechanism, possibly related to damage cavity coalescence, is needed to account for the observed large scale roughness of cracks that is characterized by a roughness exponent ≃0.8. |
| doi_str_mv | 10.1016/S0022-5096(01)00137-5 |
| format | Article |
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Fractography</subject><subject>Condensed Matter</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Exact sciences and technology</subject><subject>Fatigue, brittleness, fracture, and cracks</subject><subject>General Physics</subject><subject>Mechanical and acoustical properties of condensed matter</subject><subject>Mechanical properties of solids</subject><subject>Other</subject><subject>Physics</subject><subject>Surface roughness</subject><issn>0022-5096</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNqFkDFPwzAQhT2ARCn8BKQsIDoEznYdJ1NVVUCRKjEAs3VxbGpIk2KnBf49SVOVkemkp-_eu3uEXFC4oUCT22cAxmIBWXINdARAuYzFERkc5BNyGsI7AAiQdECSGVaR9qg_Iuvrqom-cGtCZL7XJboqapYm8vXmbVmZEKLa9miYnJFji2Uw5_s5JK_3dy-zebx4enicTRexHgNr4nEOiEIwno6TXKaZRWEkB2llqvNCFMikZTznWBQiy62mOUtZVkiOaSE0E3xIRr3vEku19m6F_kfV6NR8ulCd1n0IQo63tGWvenbt68-NCY1auaBNWWJl6k1QTIJMQSQtKHpQ-zoEb-zBmYLqWlS7FlVXlwK6y5CqO-ZyH4BBY2k9VtqFv2UuGcs4a7lJz5m2ma0zXgXtTKVN4bzRjSpq90_SL1VshlI</recordid><startdate>20020801</startdate><enddate>20020801</enddate><creator>Bouchaud, E.</creator><creator>Bouchaud, J.P.</creator><creator>Fisher, D.S.</creator><creator>Ramanathan, S.</creator><creator>Rice, J.R.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-0427-6456</orcidid></search><sort><creationdate>20020801</creationdate><title>Can crack front waves explain the roughness of cracks?</title><author>Bouchaud, E. ; Bouchaud, J.P. ; Fisher, D.S. ; Ramanathan, S. ; Rice, J.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c402t-4b0aa5523846b789fa5e7307f78cbd5da27f23b3add59bfc1b2829d73a8d5c253</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>A. 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| source | Elsevier ScienceDirect Journals |
| subjects | A. Crack branching and bifurcation A. Dynamic fracture C. Fractography Condensed Matter Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Fatigue, brittleness, fracture, and cracks General Physics Mechanical and acoustical properties of condensed matter Mechanical properties of solids Other Physics Surface roughness |
| title | Can crack front waves explain the roughness of cracks? |
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