Geng Hongbo, Cao Xuewen, Zu Lei, Pan Helin, Zhang Guiming, Zhang Qian, Fu Jianhui, Zhou Lichuan, Wu Qiaoguo, Jia Xiaolong, Liu Honghao
School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China.
Anhui Province Key Lab of Aerospace Structural Parts Forming Technology and Equipment, Hefei University of Technology, Hefei 230009, China.
Materials (Basel). 2024 Sep 23;17(18):4664. doi: 10.3390/ma17184664.
Currently, there is limited research on the in situ forming process of thermoplastic prepreg tape winding, and the unclear impact of process parameters on mechanical properties during manufacturing is becoming increasingly prominent. The study aimed to investigate the influence of process parameters on the mechanical properties of thermoplastic composite materials (CFRP) using laser-assisted CF/PPS winding forming technology. The melting point and decomposition temperature of CF/PPS materials were determined using DSC and TGA instruments, and based on the operating parameters of the laser-assisted winding equipment, the process parameter range for this fabrication technology was designed. A numerical model for the temperature of laser-heated CF/PPS prepreg was established, and based on the filament winding process setup, the heating temperature and tensile strength were simulated and tested. The effects of process parameters on the heating temperature of the prepreg and the tensile strength of NOL rings were then analyzed. The non-dominated sorting genetic algorithm (NSGA-II) was employed to globally optimize the process parameters, aiming to maximize winding rate and tensile strength. The results indicated that core mold temperature, winding rate, laser power, and their interactions significantly affected mechanical properties. The optimal settings were 90 °C, 418.6 mm/s, and 525 W, achieving a maximum tensile strength of 2571.51 MPa. This study provides valuable insights into enhancing the forming efficiency of CF/PPS-reinforced high-performance engineering thermoplastic composites.
目前，关于热塑性预浸带缠绕的原位成型过程的研究有限，并且在制造过程中工艺参数对机械性能的影响尚不明确，这一问题日益突出。本研究旨在利用激光辅助CF/PPS缠绕成型技术，研究工艺参数对热塑性复合材料（CFRP）机械性能的影响。使用DSC和TGA仪器测定了CF/PPS材料的熔点和分解温度，并根据激光辅助缠绕设备的操作参数，设计了该制造技术的工艺参数范围。建立了激光加热CF/PPS预浸料温度的数值模型，并基于纤维缠绕工艺设置，对加热温度和拉伸强度进行了模拟和测试。然后分析了工艺参数对预浸料加热温度和NOL环拉伸强度的影响。采用非支配排序遗传算法（NSGA-II）对工艺参数进行全局优化，旨在使缠绕速率和拉伸强度最大化。结果表明，芯模温度、缠绕速率、激光功率及其相互作用对机械性能有显著影响。最佳设置为90°C、418.6 mm/s和525 W，最大拉伸强度达到2571.51 MPa。本研究为提高CF/PPS增强高性能工程热塑性复合材料的成型效率提供了有价值的见解。
