Dynamics and morphology of brittle cracks: A molecular-dynamics study of silicon nitride
Crack propagation in amorphous Si sub 3 N sub 4 films is investigated with large-scale molecular-dynamics simulations on parallel machines. We observe a correlation between the speed of crack propagation and the morphology of fracture surfaces. Initially, as the crack propagates slowly, the roughnes...
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| Published in: | Physical review letters Vol. 75; no. 17; pp. 3138 - 3141 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
United States
23-10-1995
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| Online Access: | Get full text |
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| Summary: | Crack propagation in amorphous Si sub 3 N sub 4 films is investigated with large-scale molecular-dynamics simulations on parallel machines. We observe a correlation between the speed of crack propagation and the morphology of fracture surfaces. Initially, as the crack propagates slowly, the roughness exponent for fracture surfaces is found to be 0.44. This crossover behavior is similar to the recent experimental findings by Bouchaud and Naveos. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/physrevlett.75.3138 |