Multi-scale Research Progress of Manufacturing Defects for Thermoplastic FRP Fabricated by Automated Fiber Placement
The formation process of manufacturing defects in Fiber Reinforced Plastic (FRP) fabricated by automated fiber placement which involves different spatiotemporal scales, the mechanism of defects cannot be achieved by using macroscopic failure theory and experimental analysis methods. To solve these i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2017-07-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2017/V45/I7/118 |
| Summary: | The formation process of manufacturing defects in Fiber Reinforced Plastic (FRP) fabricated by automated fiber placement which involves different spatiotemporal scales, the mechanism of defects cannot be achieved by using macroscopic failure theory and experimental analysis methods. To solve these issues, this paper aimed at thermoplastic FRP, the common types of defects and reasons they formed were reported, and the present situation of bubble nucleation, thermo-mechanical coupling, theory of interface strengthening and <i>in-situ</i> consolidation were investigated. More importantly, the shortcomings of the current method for mechanism of defects were pointed out. According to existing multi-scale analysis method and nested relation of material design, multi-scale analysis method of anti-serial nested was presented, furthermore analysis and calculation method of microscopic mechanics parameters were discussed, such as fluidity of matrix, crystallinity, viscoelasticity, hygroscopicity. Finally, multi-scale collaborative design method for process parameters in FRP placement was put forward, based on methods of Grey Relational Analysis (GRA) and Multi-Objective Optimization (MOO). The future research will focus on analysis of the correlation characteristics of processing parameters, manufacturing defects and mechanical properties after application with AFP prototype. The mechanism of defects formation will be then revealed, and simultaneously, processing parameters will be optimized. |
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| ISSN: | 1001-4381 1001-4381 |