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In-plane permeability characterization of engineering textiles based on radial flow experiments: A benchmark exercise

Abstract : Although good progress was made by two international benchmark exercises on in-plane permeability, existing methods have not yet been standardized. This paper presents the results of a third benchmark exercise using in-plane permeability measurement, based on systems applying the radial unsaturated injection method. 19 participants using 20 systems characterized a non-crimp and a woven fabric at three different fiber volume contents, using a commercially available silicone oil as impregnating fluid. They followed a detailed characterization procedure and also completed a questionnaire on their set-up and analysis methods. Excluding outliers (2 of 20), the average coefficient of variation (cv) between the participant’s results was 32% and 44% (non-crimp and woven fabric), while the average cv for individual participants was 8% and 12%, respectively. This indicates statistically significant variations between the measurement systems. Cavity deformation was identified as a major influence, besides fluid pressure/viscosity measurement, textile variations, and data analysis.
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Submitted on : Thursday, August 13, 2020 - 9:15:22 PM
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D. May, A. Aktas, S.G. Advani, D.C. Berg, A. Endruweit, et al.. In-plane permeability characterization of engineering textiles based on radial flow experiments: A benchmark exercise. Composites Part A: Applied Science and Manufacturing, Elsevier, 2019, 121, pp.100-114. ⟨10.1016/j.compositesa.2019.03.006⟩. ⟨hal-02429024⟩

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