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A resonant phenomenon is investigated for the generation of interfacial waves when bulk waves are scattered by in-plane periodic cracks embedded in an isotropic elastic body. A new method of analysis… (More)
A system of periodic elastic strips (each one considered as a piece of a plate) is characterized by a matrix relation between the Bloch series of displacement and traction at the bottom side of the… (More)
Directional excitation and detection of sound in the periodic baffle system are analyzed using the method developed earlier in electrostatics. The phenomenon is exploited in phased array transducers… (More)
Abstract An elastic body with periodic teeth of finite height (a comb), insonified by incident ultrasonic wave and applied, with sliding contact, to the surface of another elastic body (a substrate),… (More)
Abstract Combs are distributed ultrasonic transducers for the generation of Rayleigh waves in solids. Synchronously excited by subsequent comb teeth, the surface wave grows along its propagation path… (More)
A simplified analytical model of comb transducer is proposed to evaluate its efficiency when working through a thickness-optimized air gap between the comb and the substrate. The resonant condition… (More)
Bragg scattering of bulk waves from shallow periodic grooves has been proven experimentally to be an effective method for generation of Rayleigh waves in solids. To study this phenomenon, a double… (More)