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Mass Conservation in Modeling Moisture Diffusion in Multi-Layer Carbon Composite StructuresMoisture diffusion in multi-layer carbon composite structures is difficult to model using finite difference methods due to the discontinuity in concentrations between adjacent layers of differing materials. Applying a mass conserving approach at these boundaries proved to be effective at accurately predicting moisture uptake for a sample exposed to a fixed temperature and relative humidity. Details of the model developed are presented and compared with actual moisture uptake data gathered over 130 days from a graphite epoxy composite sandwich coupon with a Rohacell foam core.
Document ID
20110011490
Document Type
Preprint (Draft being sent to journal)
Authors
Nurge, Mark A.
(NASA Kennedy Space Center Cocoa Beach, FL, United States)
Youngquist, Robert C.
(NASA Kennedy Space Center Cocoa Beach, FL, United States)
Starr, Stanley O.
(NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
August 25, 2013
Publication Date
January 5, 2009
Subject Category
Composite Materials
Report/Patent Number
KSC-2009-005
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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