Accession Number:

ADA289807

Title:

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

Descriptive Note:

Corporate Author:

NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD

Personal Author(s):

• Augl, Joseph M.

Report Date:

1994-10-01

Pagination or Media Count:

77.0

Abstract:

The moisture diffusion coefficients and solubilities of Advanced Enclosed MastSensor AEMS 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-glassSP Systems 3113 epoxy, E-glass510A vinyl-ester RTM3, E-glassG10 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