Energy Propagation Velocity of Elastic Waves in Sandwich Layer

[+] Author and Article Information
T. Ohyoshi

Dept. of Mechanical Engineering, Mining College, Akita University, Akita City, Japan 010

J. Vib., Acoust., Stress, and Reliab 107(2), 235-242 (Apr 01, 1985) (8 pages) doi:10.1115/1.3269250 History: Received August 07, 1984; Online November 23, 2009


The explicit characteristic velocities of mechanical energy are obtained in computation for designing structures and acoustical inspections of a sandwich composite plate made of three elastic constituent layers. The dependence of the energy velocity upon the parameters such as ratio of shear velocity, volume fraction, and Poisson’s ratios of constituent layers is discussed in graph form with curves of frequency to energy arrival time. Numerical calculations are carried out up to several higher modes within the range of practical frequencies. The results show that the second mode energy velocity is strongly dependent on the ratio of shear velocity of each constituent layers.

Copyright © 1985 by ASME
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