Process robustness and defect formation mechanisms in unidirectional semipreg
Process robustness and defect formation mechanisms in unidirectional semipreg
复制标题
单向半浸料的工艺稳健性和缺陷形成机制
DOI:
10.1080/20550340.2020.1834789
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:
Edwards, William T.;Martinez, Patricio;Nutt, Steven R.
Out-of-autoclave/vacuum-bag-only (OoA/VBO) composite processing has emerged as an alternative to autoclave cure, addressing economic, environmental, and production flexibility limitations associated with autoclave production. VBO processing can produce defect-free components under ideal processing conditions; however, adverse process conditions (e.g. poor vacuum) commonly encountered in manufacturing environments result in unacceptably high scrap rates, preventing more widespread adoption of such techniques. This work explores how modifications to prepreg format can increase process robustness. A unidirectional (UD) prepreg was produced with a customized, discontinuous resin distribution, henceforth referred to as semipreg. The semipreg exhibited through-thickness permeability orders of magnitude greater than conventional hot-melt VBO prepregs. The semipreg also was less sensitive to variations in process conditions than conventional VBO prepreg.In situprocess monitoring allowed observation and identification of two defect formation mechanisms arising during cure of the custom prepreg. Resin feature topography played a critical role in these mechanisms, indicating its importance to the design of next generation VBO semipregs.
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DOI:
10.1016/j.compositesa.2015.04.009
发表时间:
2015
影响因子:
8.7
作者:
Lee Hamill;T. Centea;S. Nutt
通讯作者:
S. Nutt
DOI:
10.1016/j.compositesa.2010.01.013
发表时间:
2010
影响因子:
8.7
作者:
S. Tavares;N. Caillet;V. Michaud;J. Månson
通讯作者:
J. Månson
DOI:
10.1016/b978-0-85709-523-7.00004-9
发表时间:
2015
期刊:
--
影响因子:
--
作者:
Butler R
通讯作者:
Butler R
DOI:
10.1016/j.compositesa.2016.10.027
发表时间:
2017
影响因子:
8.7
作者:
Lessa K. Grunenfelder;A. Dills;T. Centea;S. Nutt
通讯作者:
S. Nutt
影响因子:
8.7
作者:
M. Anders;D. Zebrine;T. Centea;S. Nutt
通讯作者:
S. Nutt