Prediction of process-induced void formation in anisotropic Fiber-reinforced autoclave composite parts
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12289_2019_1477_ReferencePDF.pdf
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Author(s)
Barari, Bamdad
Simacek, Pavel
Yarlagadda, Shridhar
Crane, Roger M
Advani, Suresh G
Date Issued
January 30, 2019
Publisher
Springer Paris
Version
Author's final manuscript
Abstract
Abstract
A numerical methodology is proposed to predict void content and evolution during autoclave processing of thermoset prepregs. Starting with the initial prepreg void content, the void evolution model implements mechanisms for void compaction under the effect of the applied pressure, including Ideal Gas law compaction, and squeeze flow for single curvature geometries. Pressure variability in the prepreg stack due to interactions between applied autoclave pressure and anisotropic material response are considered and implemented. A parametric study is conducted to investigate the role of material anisotropy, initial void content, and applied autoclave pressure on void evolution during consolidation of prepregs on a tool with single curvatures. The ability of the model to predict pressure gradient through the thickness of the laminate and its impact on void evolution is discussed.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s12289-019-01477-4
