Effect of prepreg format on defect control in out-of-autoclave processing
Effect of prepreg format on defect control in out-of-autoclave processing
复制标题
预浸料格式对非热压罐加工中缺陷控制的影响
DOI：
10.1016/j.compositesa.2016.10.027
复制
发表时间：
2017
影响因子：
8.7
通讯作者：
S. Nutt
中科院分区：
文献类型：
--
作者：
Lessa K. Grunenfelder;A. Dills;T. Centea;S. Nutt
对于采用真空袋成型（VBO）技术生产的复合材料，预浸料的形式对零件质量起着关键作用。然而，到目前为止，VBO压煮器已经通过修改现有的高压灭菌器格式来生产。在这项工作中，我们介绍了USCpreg，一种预浸料格式，专门设计用于高压釜外固化，具有贯穿厚度的渗透性。我们描述了与USCpreg处理的层压板，以及从传统的VBO预浸料格式制成的层压板的制造和分析。USCpreg中用于空气输送的全厚度路径导致在VBO条件下固化的部件的内部孔隙率接近零，表面无缺陷，即使在具有挑战性的加工条件下也是如此。结果强调了表面和内部孔隙率取决于预浸料格式的事实，以及在非理想制造场景中实现高质量部件的关键是厚度渗透性。
Prepreg format plays a key role in part quality for composites produced using vacuum bag only (VBO) techniques. To date, however, VBO prepregs have been produced by modifying existing autoclave formats. In this work, we introduce USCpreg, a prepreg format designed specifically for out-of-autoclave cure, featuring through-thickness permeability. We describe the fabrication and analysis of laminates processed with USCpreg, as well as laminates fabricated from traditional VBO prepreg formats. The through-thickness pathways for air transport in USCpreg result in near-zero internal porosity and defect-free surfaces in parts cured under VBO conditions, even under challenging processing conditions. Results highlight the fact that surface and internal porosity depend on prepreg format, and that through-thickness permeability is critical to achieving high quality parts in non-ideal manufacturing scenarios.