Accession Number : ADA289807

Title :   Sorption and Diffusion of Moisture in Multilayer Composite AEM/S Sandwich Materials.

Corporate Author : NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD

Personal Author(s) : Augl, Joseph M.

PDF Url : ADA289807

Report Date : 01 OCT 1994

Pagination or Media Count : 77

Abstract : The moisture diffusion coefficients and solubilities of Advanced Enclosed Mast/Sensor (AEM/S) sandwich constituent materials of interest have been determined at 22, 35, and 50 deg C and at 80 percent relative humidity. Expressions for calculating the diffusion coefficients and solubilities for any temperature of interest to marine environments are provided. The objective of this study was to provide input data for finite element moisture diffusion analyses that permits one to predict the moisture take-up and internal distributionas a function of time for composite mast sandwich structures in specified marine environments. The following materials were included in this investigation: E-glass/SP Systems 3113 epoxy, E-glass/510A vinyl-ester (RTM3), E-glass/G10 epoxy, Balsa wood type D57, PVC foam (Klegecell), and Nomex honeycomb phenolic core material. (MM)

Descriptors :   *COMPOSITE MATERIALS, *SHIP MASTS, *SANDWICH CONSTRUCTION, FINITE ELEMENT ANALYSIS, MATRIX MATERIALS, GLASS, MOISTURE CONTENT, DIFFUSION, SOLUBILITY, EPOXY COMPOSITES, OCEAN ENVIRONMENTS, SORPTION, HUMIDITY, WOOD, FOAM, HONEYCOMB CORES.

Subject Categories : Laminates and Composite Materials
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE