Strain-optic law for a certain class of birefringent composites |
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Authors: | R. B. Pipes J. L. Rose |
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Affiliation: | 1. University of Delaware, 19711, Newark, DE 2. Drexel University, 19104, Philadelphia, PA
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Abstract: | A strain-optic law for a certain class of birefringent fiber-reinforced composite materials is developed. The strain-optic law requires both mechanical and optical characterization of the material. Previous investigations have hypothesized the existence of three independent optical properties for the anisotropic birefringent material. The strain-optic relation developed in this study, however, requires only a single strain-optic coefficient, coupled with four independent mechanical material properties, for prediction of the optical response of a birefringent anisotropic material. Experimental results are presented which show good agreement with the developed strain-optic relation. Finally, the isoclinic parameter is investigated and preliminary evidence is presented which indicates a correspondence between principal-strain direction and optical isoclinic angle. |
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