Calculated results are presented for ultrasonic wave propagation in fiber‐reinforced composite material containing voids, where the fiber reinforcement is unidirectional. Both elastically isotropic and anisotropic fibers are considered. The propagation direction is taken as normal to the fiber length and expressions are obtained for the longitudinal‐ and shear‐wave velocities as a function of composite void and fiber volume fraction. The results exhibit reasonable behavior and a comparison of calculated data and such experimental data as are available shows fair agreement.
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The fibers, too, can contain voids, e.g., carbon fibers. The carbon fiber elastic constants used here have been corrected for the presence of voids. (See Table I.)
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© 1977 American Institute of Physics.
1977
American Institute of Physics
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