Journal Published Online: 01 July 1984
Volume 6, Issue 2

Hygrothermal Effects on Stresses and Deformations in a Bonded Fiber-Reinforced Plastic/Aluminum System



The hygrothermal effect on time dependent mechanical behavior of a model of nonsymmetrical bonded fiber-reinforced plastic (FRP)/aluminum system was investigated analytically. It was found that a linear viscoelastic closed form solution is sufficient for the prediction of model deformations for short periods of time and small strains, while a numerical finite-element solution is preferable for determining adhesive stresses and deformational behavior of the model at any time. The thermoelastic numerical solution shows a certain decrease with time of adhesive stresses, which does not seem to affect significantly the global deformations of the model. On the other hand, it was found that the presence of moisture within the polymeric adhesive layer causes significant decrease in adhesive stresses, which affects deformational changes with time, far beyond the level predicted by the static solution.

Author Information

Yaniv, G
Faculty of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa, Israel
Ishai, O
230-4 NASA AMES Research Center, Moffet Field, CA
Pages: 11
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Stock #: CTR10818J
ISSN: 0884-6804
DOI: 10.1520/CTR10818J