"Temperature." . . "Volume." . . "Mathematical models." . . . . "Laminates and Composite Materials." . . "Coefficients." . . "Carbon fibers." . . "NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD." . . "Finite difference theory." . . "Epoxy resins." . . "Fiber reinforced composites." . . "Geometry." . . "Alignment." . . "Diffusion." . . "Moisture." . . "Humidity." . . . . . . "The Effect of Moisture on Carbon Fiber Reinforced Epoxy Composites. I. Diffusion"@en . . . . . . "Mathematical models are suggested for calculating the reduced moisture diffusivities in unidirectional carbon fiber reinforced composites with hexagonal and tetragonal fiber alignment, parallel and perpendicular to the fiber direction, as a function of fiber volume fraction. The effective diffusion coefficients measured perpendicular to the fiber direction of 6 carbon fiber composites were determined as a function of temperature and relative humidity. The knowledge of the diffusion coefficients as a function of temperature, relative humidity, fiber volume fraction and composite geometry allow the prediction of the internal moisture distribution in a composite if the environment can be specified. A few simple examples have been illustrated. (Author)."@en . . . . . . . . . . .