Micromechanics of diffusion-induced damage evolution in reinforced polymers
In this work we numerically investigate the nucleation and evolution of micromechanical damage in reinforced glassy polymers under transient hygro-mechanical loading. In particular, we demonstrate the role that fiber distribution plays in the evolution of overall damage due to fiber-matrix interfaci...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Elsevier Ltd
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/28879 |
| _version_ | 1848752654232059904 |
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| author | Abhilash, A Joshi, S. Mukherjee, Abhijit Mishnaevsky, L. |
| author_facet | Abhilash, A Joshi, S. Mukherjee, Abhijit Mishnaevsky, L. |
| author_sort | Abhilash, A |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this work we numerically investigate the nucleation and evolution of micromechanical damage in reinforced glassy polymers under transient hygro-mechanical loading. In particular, we demonstrate the role that fiber distribution plays in the evolution of overall damage due to fiber-matrix interfacial debonding under moisture ingress. The heterogeneity of fiber distribution (clustering) is characterized by the coefficient of variation Cv of the center-to-center distances between interacting fibers, determined by identifying a cut-off radius around a typical fiber. The initial moisture diffusion-induced damage provides synergistic conditions for the rapid evolution of debonding under subsequent mechanical loading. The results indicate that microstructural heterogeneity strongly affects the moisture diffusion characteristics that in turn hurt the overall load carrying capacity of a composite due to aggravated damage. The strong dependence of the moisture-induced damage evolution on the fiber arrangement suggests that one should not resort to using simplistic unit cell models that assume regular fiber arrangements in such cases. |
| first_indexed | 2025-11-14T08:12:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-28879 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:12:03Z |
| publishDate | 2011 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-288792018-03-29T09:08:02Z Micromechanics of diffusion-induced damage evolution in reinforced polymers Abhilash, A Joshi, S. Mukherjee, Abhijit Mishnaevsky, L. B. Debonding A. Polymer–matrix composites B. Environmental degradation C. Computational mechanics Random microstructures In this work we numerically investigate the nucleation and evolution of micromechanical damage in reinforced glassy polymers under transient hygro-mechanical loading. In particular, we demonstrate the role that fiber distribution plays in the evolution of overall damage due to fiber-matrix interfacial debonding under moisture ingress. The heterogeneity of fiber distribution (clustering) is characterized by the coefficient of variation Cv of the center-to-center distances between interacting fibers, determined by identifying a cut-off radius around a typical fiber. The initial moisture diffusion-induced damage provides synergistic conditions for the rapid evolution of debonding under subsequent mechanical loading. The results indicate that microstructural heterogeneity strongly affects the moisture diffusion characteristics that in turn hurt the overall load carrying capacity of a composite due to aggravated damage. The strong dependence of the moisture-induced damage evolution on the fiber arrangement suggests that one should not resort to using simplistic unit cell models that assume regular fiber arrangements in such cases. 2011 Journal Article http://hdl.handle.net/20.500.11937/28879 10.1016/j.compscitech.2010.11.027 Elsevier Ltd restricted |
| spellingShingle | B. Debonding A. Polymer–matrix composites B. Environmental degradation C. Computational mechanics Random microstructures Abhilash, A Joshi, S. Mukherjee, Abhijit Mishnaevsky, L. Micromechanics of diffusion-induced damage evolution in reinforced polymers |
| title | Micromechanics of diffusion-induced damage evolution in reinforced polymers |
| title_full | Micromechanics of diffusion-induced damage evolution in reinforced polymers |
| title_fullStr | Micromechanics of diffusion-induced damage evolution in reinforced polymers |
| title_full_unstemmed | Micromechanics of diffusion-induced damage evolution in reinforced polymers |
| title_short | Micromechanics of diffusion-induced damage evolution in reinforced polymers |
| title_sort | micromechanics of diffusion-induced damage evolution in reinforced polymers |
| topic | B. Debonding A. Polymer–matrix composites B. Environmental degradation C. Computational mechanics Random microstructures |
| url | http://hdl.handle.net/20.500.11937/28879 |