Air evacuation and resin impregnation in semi-pregs: effects of feature dimensions
Air evacuation and resin impregnation in semi-pregs: effects of feature dimensions
复制标题
半浸料中的排气和树脂浸渍:特征尺寸的影响
DOI:
10.1080/20550340.2020.1768348
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Nutt, Steven R.
中科院分区:
文献类型:
--
作者:
Schechter, Sarah G.;Grunenfelder, Lessa K.;Nutt, Steven R.
Prepregs with discontinuous resin (semi-pregs) impart robustness to vacuum-bag-only processing of composites. Limited guidance exists for evaluating advantageous resin patterns (i.e. dry space dimensions required to achieve both efficient air evacuation and full resin infiltration during cure). A flow front model was developed based on resin cure kinetics and rheological behavior, and then determined maximum dry space dimensions for semi-pregs under a range of realistic manufacturing conditions. Model predictions were validatedin situ. Under controlled laboratory cure conditions, small surface openings (≤3.7 mm) resulted in full resin infiltration. Under adverse conditions (resin with accrued out-time), the maximum opening size dropped 40% (to ≤2.2 mm). Using a mathematical model, air evacuation time was calculated for various feature sizes using permeability measurements. Model predictions were tested and verifiedviafabrication of laminates. This methodology can be applied to other resin systems to guide vacuum-bag-only prepreg design and support robust production of composites.
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DOI:
10.1016/j.compositesa.2018.08.002
发表时间:
2018
期刊:
Composites Part A: Applied Science and Manufacturing
影响因子:
--
作者:
S. Schechter;T. Centea;S. Nutt
通讯作者:
S. Nutt
影响因子:
2.9
作者:
R. Helmus;T. Centea;P. Hubert;R. Hinterhölzl
通讯作者:
R. Hinterhölzl
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Arafath;G. Fernlund;A. Poursartip
通讯作者:
A. Poursartip
影响因子:
2.9
作者:
Kratz, James;Hsiao, Kevin;Hubert, Pascal
通讯作者:
Hubert, Pascal
影响因子:
2.9
作者:
Wei Hu;Lessa K. Grunenfelder;T. Centea;S. Nutt
通讯作者:
S. Nutt