Compaction of thick composites: Simulation and experiment
Compaction of thick composites: Simulation and experiment
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DOI：
10.1002/pc.20004
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发表时间：
2004-02
影响因子：
5.2
通讯作者：
D. Shin;H. Hahn
中科院分区：
文献类型：
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作者：
D. Shin;H. Hahn
开发了一个逼真的过程模拟模型，用于沿着排气口-复合材料组件的传热和压实。两个案例研究提出了这个模型，其中一个利用可变树脂的性能，而其他使用恒定的值。预测结果进行了实验验证与228层和380层AS 4/3501-6石墨/环氧树脂层压板固化下的一维树脂流动条件。模型实验相关性是相当好的228层的层压板，虽然结果与可变树脂性能预测更好的通过厚度的温度分布比恒定的树脂性能。该模型还预测更快的压实速率，因为压缩性模型似乎预测较高的纤维体积分数为给定的有效应力。至于380层的层压板，观察到显着的偏差的温度和压实预测。这种差异似乎是由于树脂性质和压缩性模型不准确造成的。
A realistic process simulation model for heat transfer and compaction along the bleeder-composite assembly was developed. Two case studies were presented with this model in which one took advantage of variable resin properties while the other used constant values. The predicted results were then experimentally validated with 228-ply and 380-ply AS4/3501-6 graphite/epoxy laminates cured under one-dimensional resin flow condition. The model-experiment correlation was quite good for the 228-ply laminate although results with variable resin properties predicted better through-the-thickness temperature distribution than with constant resin properties. The model also predicted faster compaction rate because the compressibility model appeared to predict higher fiber volume fraction for given effective stress. As for the 380-ply laminate, notable deviations were observed for both the temperature and compaction predictions. The discrepancies appeared to have manifested from inaccurate resin property and compressibility models.