Abstract
Quantitative ultrasound (QUS) has shown a great potential in the assessment of bone characteristics in the recent research. However, wave propagation in bones is very challenging due to the nature of multi-layer, anisotropic, and viscoelastic behaviors. Therefore, our knowledge of wave interaction with bone structures is far from complete and the resulting wave modes have not been fully explained. The aim of the current study is to develop a model for propagation of ultrasonic guided waves in a soft-tissue layer over a cortical bone layer. The amplitudes of wave modes generated by time- harmonic loads in the bilayered plate are theoretically computed by reciprocity consideration.
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