Non-autoclave processing of honeycomb sandwich structures: Skin through thickness air permeability during cure
Non-autoclave processing of honeycomb sandwich structures: Skin through thickness air permeability during cure
复制标题
蜂窝夹层结构的非热压罐加工：固化过程中表层厚度的透气性
DOI：
10.1016/j.compositesa.2010.01.013
复制
发表时间：
2010
影响因子：
8.7
通讯作者：
J. Månson
中科院分区：
文献类型：
--
作者：
S. Tavares;N. Caillet;V. Michaud;J. Månson
在夹层结构的非高压釜加工中，蜂窝内部的压力水平是一个关键的工艺参数，它取决于上表皮对空气的渗透性。在这项工作中，通过降压法分别测定了预浸料和胶粘剂的渗透性。我们表明，通过穿孔预浸料层、胶粘剂层或两者的组合，可以实现一系列初始皮肤厚度的透气性。在蜂窝内部测量了相应的可实现压力范围。在每个研究案例中，确定了在固化周期内穿透厚度渗透率随时间的变化。在蒙皮制造中，胶粘剂层被认为是最能降低初始透气性厚度的因素。
In non-autoclave processing of sandwich structures, the pressure level inside the honeycomb becomes a critical process parameter, which depends on the permeability to air of the upper skin. In this work, prepreg and adhesive permeabilities were determined separately and in combination through a falling pressure method. We showed that a range of initial skin through thickness air permeability could be achieved by perforating the prepreg plies, the adhesive layer or a combination of both. A corresponding range of achievable pressure was measured inside the honeycomb. The change in the through thickness permeability with time during the cure cycle was determined for each of the studied cases. The adhesive layer was identified as the element that most reduces the initial through thickness air permeability in skin manufacturing.