Measurement and analysis on in-plane and through-thickness air permeation of fiber/resin prepreg
Measurement and analysis on in-plane and through-thickness air permeation of fiber/resin prepreg
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纤维/树脂预浸料面内和厚度方向透气率的测量与分析
DOI：
10.1177/0731684411415136
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发表时间：
2011-09
影响因子：
3.1
通讯作者：
Zhang, Zuoguang
中科院分区：
文献类型：
--
作者：
Xin, Chaobo;Li, Min;Gu, Yizhuo;Li, Yanxia;Zhang, Zuoguang
目前，飞机复合材料结构的成形工艺主要采用零泌水工艺和非蒸压工艺。在这些情况下，预浸料的性能，如透气性，成为一个关键因素，截留空气排出预浸料堆在固化过程中。因此，空气渗透率的测量对于理解和优化热压罐和真空袋工艺以获得无空隙的复合材料部件是重要的。本文建立了一套空气渗透测试系统，对预浸料叠层的面内和厚度方向的空气渗透率进行了测试，并研究了压制压力和温度对空气渗透率的影响。此外，还分析了预浸料层的透气性对热压罐法和真空袋法固化层合板内部孔隙特性的影响。结果表明，所提出的气体渗透测量系统可以定量测量预浸料叠层的面内和厚度方向的气体渗透率。成型压力和成型温度对透气性有重要影响。对于相同的预浸料系统，面内透气性比厚度方向透气性高两个数量级。最后，对于真空袋工艺，空隙缺陷对空气渗透率敏感，特别是在厚层压板的情况下。该方法为预浸料质量的评价提供了一种有效的方法，对预浸料生产企业控制孔隙缺陷具有重要的指导意义。
Nowadays, zero-bleeding process and out-of-autoclave process are prevailing for aircraft composite structures. For these cases, the prepreg property such as air permeability becomes a crucial element for entrapped air venting off from prepreg stack during cure process. Therefore, the measurement of air permeability is important for the understanding and optimization of autoclave and vacuum-bag processes to obtain void-free composite parts. In this paper, an air permeation measuring system was established to test in-plane and through-thickness air permeabilities of prepreg stack, and the effects of compacting pressure and temperature on the air permeability were investigated. Furthermore, the influences of air permeability of prepreg stack on the void characteristics inside the cured laminates processed by autoclave and vacuum-bag processes were analyzed. The results indicate that the proposed air permeation measuring systems can quantitatively measure the in-plane and through-thickness gas permeabilities of prepreg stack. The compacting pressure and temperature have important effects on air permeability. For the same prepreg system, the in-plane air permeability is two orders of magnitudes higher than the through-thickness one. Finally, void defects are sensitive to the air permeability for vacuum-bag process, especially in the case of thick laminates. It provides an effective way to evaluate the quality of the prepreg for control of void defect and an important guideline for prepreg manufacturers.
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影响因子：
2.9
作者：
BOWLES, KJ;FRIMPONG, S
通讯作者：
FRIMPONG, S
影响因子：
5.2
作者：
J. Nam;J. Seferis;S.-W. Kim;K. Lee
通讯作者：
J. Nam;J. Seferis;S.-W. Kim;K. Lee
影响因子：
6.3
作者：
Liu, L;Zhang, BM;Wu, ZJ
通讯作者：
Wu, ZJ
DOI：
10.1016/0956-7143(94)90024-8
发表时间：
1994-09
期刊：
Composites Manufacturing
影响因子：
--
作者：
J. Wood;M. G. Bader
通讯作者：
J. Wood;M. G. Bader
影响因子：
2.9
作者：
Jeong, H
通讯作者：
Jeong, H