工艺与制造英文2023被引 1
真空辅助树脂注入成型中织物渗透率的反演方法
An Inverse method for determining fabric permeability in vacuum assisted resin infusion for composite parts forming
George-Christopher Vosniakos · National Technical University of Athens
摘要整理
真空辅助树脂注入（VARI）工艺通过在模具上铺放多层织物，利用真空吸引树脂渗透织物进行复合材料成型。VARI 工艺模拟的关键在于织物渗透率的准确确定。本研究采用遗传算法从离散渗透率值集合中进行优化选择。建立了基于 Comsol™ 的注入模拟模型，用于计算树脂在织物内的流动前沿传播过程。遗传算法将模拟得到的注入前沿在空间和时间维度上的演变过程与单次实际注入实验结果进行对比，实验结果通过机器视觉获取。该方法假设织物孔隙率均匀分布，采用简单试样即可完成测试。相比于采用昂贵专用设备进行的传统渗透率测定方法，本反演方法具有计算成本低、效率高的优势，为 VARI 工艺的精准模拟和工艺优化提供了有效手段。
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