Fatigue behaviour and damage characterization of quasi-isotropic carbon/epoxy laminates
| Autor: | Padmaraj N H, Dayananda Pai K, Shreepannaga Shreepannaga, M Vijaya Kini |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Cogent Engineering, Vol 9, Iss 1 (2022) |
| Druh dokumentu: | article |
| ISSN: | 23311916 2331-1916 |
| DOI: | 10.1080/23311916.2022.2077680 |
| Popis: | The present research work focuses on understanding the tension-tension fatigue durability of autoclave cured carbon/epoxy quasi-isotropic laminates. Based on the experimental results, S-N curve and stiffness degradation behaviour were developed. Damage growth mechanisms were studied based on the energy dissipated in each loading cycle at different stress levels. C-Scan and Scanning Electron Microscope were used to characterize the micro-crack growth and nature of fatigue failure. A bilinear trend was observed in the stress–strain curve with the failure of 90° oriented fibres in the initial phase followed by 0° oriented fibres. The energy dissipated and damage growth of the laminates at different stress levels followed a characteristic damage state curve. The C-Scan images showed the initiation of cracks on the specimen edges and propagating towards the center in the transverse direction. |
| Databáze: | Directory of Open Access Journals |
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