The frequency-domain Scott and Gordon virtual-interface model for the propagation of ultrasonic waves in multilayered media was extended analytically and verified experimentally. Recursive compact equations were developed and introduced that enable to calculate the frequency features of ultrasonic waves propagating in compartments composed of any arbitrary number of layers. The calculations are carried out through an iterative process. The spectra of experimental ultrasonic signals, obtained through a Fourier Transform were compared to the frequency features calculated by the model and were found to be in good agreement.
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