Moisture Ingression in Honeycomb Core Sandwich Panels: Directional Aspects

Abstract

Moisture ingression was studied in several composite sandwich panels. No observable ingression was found in a panel with HRP core of density 0.13 g/cm³ (8.0 lb/ft³). Significant moisture ingression occurred in a panel with Korex 3.0-lb core with density 0.048 g/cm³, (3.0 lb/ft³). It was faster in the Y-axis (core ribbon) direction, per unit distance than in other directions

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