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Gas Evacuation from Partially Saturated Woven Fiber Laminates

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Abstract

Gas evacuation from a partially saturated composite prepregs—a woven fabric reinforcement with a laminated liquid resin film—was characterized using the pulse-decay method. Dimensionless analysis was used to show how the initial pressure, boundary conditions (vacuum pressure at \(x=0\) and with or without a reservoir volume at \(x=L\)), and Klinkenberg parameter effect the predicted decay of gas pressure. By comparing the experimental data to a set of dimensionless master curves, the intrinsic permeability, Klinkenberg parameter, and porosity were determined. Resin saturation was inferred by monitoring the area of resin saturating the initially dry side of the fabric. By mapping the gas flow parameters to the observed area fraction of resin, a complete and repeatable characterization method is demonstrated.

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Acknowledgments

We would like to thank Mehmet Ömer and Emily Readdy for their help with the experimental validation. Research was sponsored by the Office of Naval Research under Grant No. N00014-10-1-0971. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Office of Naval Research. Research was also supported by the Delaware Space Grant College and Fellowship Program (NASA Grant NNX15AI19H).

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Delaware, Newark, DE, USA

    Thomas A. Cender, Pavel Simacek, Steven Davis & Suresh G. Advani

  2. 202 Composites Manufacturing Science Laboratory, Center for Composite Materials, University of Delaware, Newark, DE, 19711, USA

    Thomas A. Cender, Pavel Simacek, Steven Davis & Suresh G. Advani

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  1. Thomas A. Cender
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  2. Pavel Simacek
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  4. Suresh G. Advani
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Correspondence to Thomas A. Cender.

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Cender, T.A., Simacek, P., Davis, S. et al. Gas Evacuation from Partially Saturated Woven Fiber Laminates. Transp Porous Med 115, 541–562 (2016). https://doi.org/10.1007/s11242-016-0784-x

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