Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology
Compared with standard-ply composites, thin-ply composites exhibit a superior mechanical performance under various operating conditions due to their positive size effects. Thin-ply laminate failure modes, including matrix initial damage (MID), matrix failure (MF), and fiber failure (FF), have been d...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/4/913 |
| _version_ | 1797396552689385472 |
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| author | Kaidong Zheng Dongfeng Cao Haixiao Hu Yundong Ji Shuxin Li |
| author_facet | Kaidong Zheng Dongfeng Cao Haixiao Hu Yundong Ji Shuxin Li |
| author_sort | Kaidong Zheng |
| collection | DOAJ |
| description | Compared with standard-ply composites, thin-ply composites exhibit a superior mechanical performance under various operating conditions due to their positive size effects. Thin-ply laminate failure modes, including matrix initial damage (MID), matrix failure (MF), and fiber failure (FF), have been distinguished through a systematic acoustic emission (AE) signals analysis combined with scanning electron microscopy (SEM). First, the characteristic frequencies of various failure modes are identified based on unidirectional laminates ([90] <sub>68</sub> and [0] <sub>68</sub>). Then, according to the identified frequencies corresponding to distinctive damage modes, four lay-up sequences (0<sub>2</sub>[[90<sub>m</sub>/0<sub>m</sub>]<sub>ns</sub>]0<sub>2</sub>, m = 1, 2, 4, 8, n × m = 16) with a constant total thickness are designed, and the effects of the number of identical plies in the laminate thickness on the damage evolution characteristics and the damage process under uniaxial tension loads are dynamically monitored. The obtained results indicate that the characteristic frequency ranges for MID, MF, and FF are identified as 0–85 kHz, 165–260 kHz, and 261–304 kHz, respectively. The thickness of identical plies has a significant effect on onset damage. With the decrease of the number of identical plies (i.e., m in the stacking sequences), the thin-ply laminates exhibit the initiation of damage suppression effects and crack propagation resistance. |
| first_indexed | 2024-03-09T00:51:58Z |
| format | Article |
| id | doaj.art-e5175c3df543421c9fd183715969721e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T00:51:58Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e5175c3df543421c9fd183715969721e2023-12-11T17:09:03ZengMDPI AGMaterials1996-19442021-02-0114491310.3390/ma14040913Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission TechnologyKaidong Zheng0Dongfeng Cao1Haixiao Hu2Yundong Ji3Shuxin Li4State Key Laboratory of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaFoshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528000, ChinaSchool of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaCompared with standard-ply composites, thin-ply composites exhibit a superior mechanical performance under various operating conditions due to their positive size effects. Thin-ply laminate failure modes, including matrix initial damage (MID), matrix failure (MF), and fiber failure (FF), have been distinguished through a systematic acoustic emission (AE) signals analysis combined with scanning electron microscopy (SEM). First, the characteristic frequencies of various failure modes are identified based on unidirectional laminates ([90] <sub>68</sub> and [0] <sub>68</sub>). Then, according to the identified frequencies corresponding to distinctive damage modes, four lay-up sequences (0<sub>2</sub>[[90<sub>m</sub>/0<sub>m</sub>]<sub>ns</sub>]0<sub>2</sub>, m = 1, 2, 4, 8, n × m = 16) with a constant total thickness are designed, and the effects of the number of identical plies in the laminate thickness on the damage evolution characteristics and the damage process under uniaxial tension loads are dynamically monitored. The obtained results indicate that the characteristic frequency ranges for MID, MF, and FF are identified as 0–85 kHz, 165–260 kHz, and 261–304 kHz, respectively. The thickness of identical plies has a significant effect on onset damage. With the decrease of the number of identical plies (i.e., m in the stacking sequences), the thin-ply laminates exhibit the initiation of damage suppression effects and crack propagation resistance.https://www.mdpi.com/1996-1944/14/4/913thin-ply laminateacoustic emissionfailure modescharacteristic frequency |
| spellingShingle | Kaidong Zheng Dongfeng Cao Haixiao Hu Yundong Ji Shuxin Li Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology Materials thin-ply laminate acoustic emission failure modes characteristic frequency |
| title | Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology |
| title_full | Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology |
| title_fullStr | Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology |
| title_full_unstemmed | Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology |
| title_short | Mechanical Properties of Thin-Ply Composites Based on Acoustic Emission Technology |
| title_sort | mechanical properties of thin ply composites based on acoustic emission technology |
| topic | thin-ply laminate acoustic emission failure modes characteristic frequency |
| url | https://www.mdpi.com/1996-1944/14/4/913 |
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