Accession Number:

ADA051841

Title:

The Effect of Moisture on Carbon Fiber Reinforced Composites. IV. Prediction of Changes in the Elastic Behavior.

Descriptive Note:

Rept. for 1 May-3 Dec 76,

Corporate Author:

NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD

Personal Author(s):

• Augl,J. M.
• Berger,A. E.

Report Date:

1977-09-26

Pagination or Media Count:

50.0

Abstract:

The changes in the elastic behavior of composites due to the reversible moisture absorption can be predicted when the matrix properties E sub m and Nu sub m have been determined as a function of temperature and moisture concentration. The composite is analyzed in terms of artificial delta-layers, analogous to laminated plate theory. If in addition the diffusion coefficient of moisture for the composite is known as a function of temperature one can predict the elastic behavior for any reasonable environment as a function of time. Author

Descriptors:

• *ELASTIC PROPERTIES
• *CARBON FIBERS
• *CARBON REINFORCED COMPOSITES
• TEMPERATURE
• EXPOSURE(GENERAL)
• LAMINATES
• MATRIX MATERIALS
• MOISTURE CONTENT
• MATHEMATICAL PREDICTION
• REVERSIBLE
• ABSORPTION
• EPOXY RESINS
• CONCENTRATION(CHEMISTRY)
• WEATHERING

Subject Categories:

• Refractory Fibers
• Laminates and Composite Materials
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE