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Acoustic Waveguides
Published in J. David, N. Cheeke, Fundamentals and Applications of Ultrasonic Waves, 2017
A Stoneley wave [7] is a sagittal interface wave between two solids that is evanescent in both media, as shown for an aluminum–tungsten combination in Figure 10.11. For a solid–solid interface, these are very restrictive conditions on the existence of these modes, as shown by the shaded regions in Figure 10.12. It turns out from the analysis that the Stoneley wave velocity VST lies in the range VR < VST < VS of the dense medium and that VST < VS, V^S of both media.
Weiskopf model for sandy materials: Rayleigh – Lamb wave dispersion
Published in Mechanics of Advanced Materials and Structures, 2022
Vertical dashed lines in these plots indicate the high-frequency asymptotes relating to Rayleigh and Stoneley wave velocities; for analytical and approximate formulas for the corresponding velocities, see [33–35]; the three-dimensional formalism for evaluating Rayleigh wave velocity in anisotropic media, see [36]. The Stoneley wave velocity at the interface between layers and the halfspace is computed by expressions given in [37]. The low frequency limit, known as the second limiting velocity [38] is obtained by taking the direct limit
Regions of existence for Stoneley waves in auxetic and non-auxetic media
Published in Mechanics of Advanced Materials and Structures, 2022
Due to Stoneley [1] the algebraic non-linear secular equation for velocity of Stoneley wave can be written in the following form where is the Stoneley wave velocity; are material densities of the contacting media and
Stoneley waves in auxetics and non-auxetics: Wiechert case
Published in Mechanics of Advanced Materials and Structures, 2022
As these plots show, all the velocity curves are symmetric with respect to the vertical axis in semi-logarithmic coordinates. Direct computations show that the Stoneley wave velocities at tend to the relative shear wave velocity