Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission
Barium osumilite (BMAS) ceramic matrix composites reinforced with SiC-Tyranno fibers are tested in a cyclic loading protocol. Broadband acoustic emission (AE) sensors are used for monitoring the occurrence of different possible damage mechanisms. Improved use of AE indices is proposed by excluding l...
| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
Hindawi Limited
2013-01-01
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| Colecção: | The Scientific World Journal |
| Acesso em linha: | http://dx.doi.org/10.1155/2013/869467 |
| _version_ | 1827006418997215232 |
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| author | D. G. Aggelis K. G. Dassios E. Z. Kordatos T. E. Matikas |
| author_facet | D. G. Aggelis K. G. Dassios E. Z. Kordatos T. E. Matikas |
| author_sort | D. G. Aggelis |
| collection | DOAJ |
| description | Barium osumilite (BMAS) ceramic matrix composites reinforced with SiC-Tyranno fibers are tested in a cyclic loading protocol. Broadband acoustic emission (AE) sensors are used for monitoring the occurrence of different possible damage mechanisms. Improved use of AE indices is proposed by excluding low-severity signals based on waveform parameters, rather than only threshold criteria. The application of such improvements enhances the accuracy of the indices as accumulated damage descriptors. RA-value, duration, and signal energy follow the extension cycles indicating moments of maximum or minimum strain, while the frequency content of the AE signals proves very sensitive to the pull-out mechanism. |
| first_indexed | 2025-02-18T12:04:28Z |
| format | Article |
| id | doaj.art-2b07e4a9cb8b45dcaeb8dcde5f2edcec |
| institution | Directory Open Access Journal |
| issn | 1537-744X |
| language | English |
| last_indexed | 2025-02-18T12:04:28Z |
| publishDate | 2013-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj.art-2b07e4a9cb8b45dcaeb8dcde5f2edcec2024-11-02T05:09:01ZengHindawi LimitedThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/869467869467Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic EmissionD. G. Aggelis0K. G. Dassios1E. Z. Kordatos2T. E. Matikas3Department of Mechanics of Materials and Constructions, Free University of Brussels, Pleinlaan 2, 1050 Brussels, BelgiumDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceBarium osumilite (BMAS) ceramic matrix composites reinforced with SiC-Tyranno fibers are tested in a cyclic loading protocol. Broadband acoustic emission (AE) sensors are used for monitoring the occurrence of different possible damage mechanisms. Improved use of AE indices is proposed by excluding low-severity signals based on waveform parameters, rather than only threshold criteria. The application of such improvements enhances the accuracy of the indices as accumulated damage descriptors. RA-value, duration, and signal energy follow the extension cycles indicating moments of maximum or minimum strain, while the frequency content of the AE signals proves very sensitive to the pull-out mechanism.http://dx.doi.org/10.1155/2013/869467 |
| spellingShingle | D. G. Aggelis K. G. Dassios E. Z. Kordatos T. E. Matikas Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission The Scientific World Journal |
| title | Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission |
| title_full | Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission |
| title_fullStr | Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission |
| title_full_unstemmed | Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission |
| title_short | Damage Accumulation in Cyclically-Loaded Glass-Ceramic Matrix Composites Monitored by Acoustic Emission |
| title_sort | damage accumulation in cyclically loaded glass ceramic matrix composites monitored by acoustic emission |
| url | http://dx.doi.org/10.1155/2013/869467 |
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