The dispersive and modal behavior of specially orthotropic fiber-rein forced laminated tubes is investigated over a range of frequencies. A wave propagation based method with finite element discretization in the radial direction is used to allow modeling which includes the radial variation of the constitutive properties of such lami nated tubes. Tubes with different numbers of total plies are compared in order to determine at what frequencies the ply lay-up affects the character of the propagating modes and cou pling between these modes. In particular, coupling between predominantly longitudinal (axial-radial and radial-axial) and predominantly torsional modes is examined.
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