Guided ultrasonic waves in composite cylinders |
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| Authors: | F Honarvar E Enjilela A N Sinclair |
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| Institution: | (1) Faculty of Mechanical Engineering, K. N. Toosi University of Technology, P.O. Box 16765-3381, Tehran, Iran;(2) Faculty of Mechanical Engineering, Tehran Science and Research Campus of Azad University, P.O. Box 14155-775, Tehran, Iran;(3) Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario, M5S 3G1, Canada |
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| Abstract: | The ultrasonic nondestructive evaluation of composite cylinders requires a thorough understanding of the propagation of waves
in these materials. In this paper, the propagation of flexural and longitudinal guided waves in fiber-reinforced composite
(FRC) rods with transversely isotropic symmetry properties is studied. The frequency equations obtained for free cylinders
and the effect of increased fiber volume fraction (increased anisotropy) on the dispersion characteristics of the rod are
explored. The numerical results reveal a number of previously unnoticed characteristics of dispersion curves for composite
cylinders. The mode shapes of longitudinal waves propagating in glass/epoxy cylinders are also plotted. These plots can be
used to choose an appropriate strategy for inspecting composite cylinders by ultrasonic nondestructive evaluation techniques.
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 43, No. 3, pp. 411–426, May–June, 2007. |
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| Keywords: | composite materials cylinder ultrasonic guided waves dispersion |
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