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TECHNICAL PAPERS

Anomalous Moisture Diffusion in Viscoelastic Polymers: Modeling and Testing

[+] Author and Article Information
S. Roy, W. X. Xu

Department of Mechanical Engineering, University of Missouri-Rolla, 1870 Miner Circle, Rolla, MO 65401

S. J. Park

K. M. Liechti

Center for the Mechanics of Solids, Structures and Mechanics, ASE/EM WRW 110C, The University of Texas, Austin, TX 78712

J. Appl. Mech 67(2), 391-396 (Oct 29, 1999) (6 pages) doi:10.1115/1.1304912 History: Received December 12, 1998; Revised October 29, 1999
Copyright © 2000 by ASME
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References

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Roy,  S., Lefebvre,  D. R., Dillard,  D. A., and Reddy,  J. N., 1989, “A Model for the Diffusion of Moisture in Adhesive Joints. Part III: Numerical Simulations,” J. Adhes., 27, pp. 41–62.
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Figures

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Through-thickness moisture concentration profile at time=508.3 hours
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Variation of diffusion coefficient with time for epoxy at test temperatures
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Through-thickness moisture concentration profile at time=1.66 hours
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Through-thickness moisture concentration profile at time=83.3 hours
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Percent moisture weight gain versus square root of time for epoxy at 60°C
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Percent moisture weight gain versus square root of time for epoxy at 70°C
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Percent moisture weight gain versus square root of time for epoxy at 23°C
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Reduced absorption plot for epoxy specimens of different thickness at 23°C
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Percent moisture weight gain versus square root of time for epoxy at 50°C

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