Wave Propagation and Vibrations in Fiber-Reinforced Composites.
WATERVLIET ARSENAL N Y
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A mathematical model for unidirectional fiber-reinforced composite materials is developed. This theory is founded on the assumption that the fibers may be treated as Euler-Bernoulli beams. The elastic moduli are assigned numerical values on the basis of recently published data obtained through ultrasonic measuring procedures. Certain boundary value problems formulated in this theory of composites are found to be identical to the corresponding boundary value problems that arise in the theory of couple-stresses. The thickness-shear, thickness-stretch, and thickness-twist modes are studied, and the dispersive characteristics of surface waves and Love waves are investigated. All results are compared with the solutions of the same problems formulated within the framework of the so-called effective modulus theory. Author-PL
- Laminates and Composite Materials