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RESEARCH PAPERS

Combined Edge and Anisotropy Effects on Fickian Mass Diffusion in Polymer Composites

[+] Author and Article Information
Levent Aktas, Youssef K. Hamidi, M. Cengiz Altan

School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK 73019

J. Eng. Mater. Technol 126(4), 427-435 (Nov 09, 2004) (9 pages) doi:10.1115/1.1789959 History: Received July 25, 2003; Revised March 29, 2004; Online November 09, 2004
Copyright © 2004 by ASME
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References

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Aktas, L., Hamidi, Y., and Altan, M. C., 2002, “Effect of Moisture Absorption on Mechanical Properties of Resin Transfer Molded Composites,” Proc. of ASME IMEC&E 2002, Paper No. 39223.
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Figures

Grahic Jump Location
Slope evolution of a sample with aspect ratios 10, for different diffusion ratios
Grahic Jump Location
Nondimensional mass gain plots for different geometries keeping the longitudinal and transverse diffusion ratios constant
Grahic Jump Location
Nondimensional mass gain plots for different longitudinal and transverse diffusion ratios keeping the geometry constant
Grahic Jump Location
Slope evolution of a cubic sample for diffusion ratios ranging from 1 to 5
Grahic Jump Location
Geometry used in the formulation of diffusivity determination methods. Two aspect ratios, A1=l/h and A2=w/h, define the geometry.
Grahic Jump Location
Percent error involved in the diffusion coefficients calculated by Shen and Springer’s method before and after correction for two different diffusion ratios. t is a representative dimensional time scale obtained by using Dx=2.5×10−9 m2/h and h=1 mm.
Grahic Jump Location
Percent error involved in the diffusivity when calculated by Shen and Springer’s method for a range of diffusion ratios. Slope used in determining the error is calculated between t*=0 and t*=0.06.
Grahic Jump Location
Percent error involved in the diffusivity when calculated by Shen and Springer’s method for a range of diffusion ratios. Slope used in determining the error is calculated between t*=0 and t*=0.06.
Grahic Jump Location
The mass gain curves defined by the two methods used in the demonstration. Sample 1 has dimensions, h=0.004 m,w=0.04 m and l=0.04 m.
Grahic Jump Location
The mass gain curves defined by the two methods used in the demonstration. Sample 2 has dimensions, h=0.004 m,w=0.004 m and l=0.008 m.

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