Misfit dislocation dipoles in coated fibrous composites
We investigate the stability of a misfit screw dislocation dipole in a coated fibrous composite. The fiber is stiffer whereas the coating is more compliant than the matrix. A critical coating thickness is identified for given material parameters of the composite. For a compliant coating below the cr...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2016
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| Online Access: | https://hdl.handle.net/10356/81817 http://hdl.handle.net/10220/40965 |
| _version_ | 1826110923741331456 |
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| author | Wang, Xu Zhou, Kun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Wang, Xu Zhou, Kun |
| author_sort | Wang, Xu |
| collection | NTU |
| description | We investigate the stability of a misfit screw dislocation dipole in a coated fibrous composite. The fiber is stiffer whereas the coating is more compliant than the matrix. A critical coating thickness is identified for given material parameters of the composite. For a compliant coating below the critical thickness, there exist an inner unstable and an outer stable equilibrium position in the matrix for the dislocation dipole. However, for a compliant coating above the critical thickness, the dislocation dipole will be attracted to the coating–matrix interface. If the coating thickness is greater than the inclusion radius, the dislocation dipole cannot lodge in the matrix no matter what values of the material parameters are chosen. |
| first_indexed | 2024-10-01T02:42:07Z |
| format | Journal Article |
| id | ntu-10356/81817 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:42:07Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/818172020-03-07T13:19:19Z Misfit dislocation dipoles in coated fibrous composites Wang, Xu Zhou, Kun School of Mechanical and Aerospace Engineering Misfit dislocation dipole Fibrous composite We investigate the stability of a misfit screw dislocation dipole in a coated fibrous composite. The fiber is stiffer whereas the coating is more compliant than the matrix. A critical coating thickness is identified for given material parameters of the composite. For a compliant coating below the critical thickness, there exist an inner unstable and an outer stable equilibrium position in the matrix for the dislocation dipole. However, for a compliant coating above the critical thickness, the dislocation dipole will be attracted to the coating–matrix interface. If the coating thickness is greater than the inclusion radius, the dislocation dipole cannot lodge in the matrix no matter what values of the material parameters are chosen. ASTAR (Agency for Sci., Tech. and Research, S’pore) 2016-07-19T04:49:32Z 2019-12-06T14:40:57Z 2016-07-19T04:49:32Z 2019-12-06T14:40:57Z 2013 Journal Article Wang, X., & Zhou, K. (2013). Misfit dislocation dipoles in coated fibrous composites. Mechanics Research Communications, 52, 88-91. 0093-6413 https://hdl.handle.net/10356/81817 http://hdl.handle.net/10220/40965 10.1016/j.mechrescom.2013.07.004 en Mechanics Research Communications © 2013 Elsevier. |
| spellingShingle | Misfit dislocation dipole Fibrous composite Wang, Xu Zhou, Kun Misfit dislocation dipoles in coated fibrous composites |
| title | Misfit dislocation dipoles in coated fibrous composites |
| title_full | Misfit dislocation dipoles in coated fibrous composites |
| title_fullStr | Misfit dislocation dipoles in coated fibrous composites |
| title_full_unstemmed | Misfit dislocation dipoles in coated fibrous composites |
| title_short | Misfit dislocation dipoles in coated fibrous composites |
| title_sort | misfit dislocation dipoles in coated fibrous composites |
| topic | Misfit dislocation dipole Fibrous composite |
| url | https://hdl.handle.net/10356/81817 http://hdl.handle.net/10220/40965 |
| work_keys_str_mv | AT wangxu misfitdislocationdipolesincoatedfibrouscomposites AT zhoukun misfitdislocationdipolesincoatedfibrouscomposites |