This presentation discusses different Zakharenko waves (ZWs) such as the non-dispersive ZWs, dispersive leaky ZWs, slow surface ZWs and ultrasonic surface ZWs, as well as their possible applications. The nondispersive Zakharenko waves can be found in complex systems such as different layered and quantum systems. Existence examples of the non-dispersive Zakharenko waves in both fundamental modes...

In this paper, a piezoelectric metasurface is proposed to manipulate the anti-symmetric mode Lamb wave by altering diffraction order. The attached host plate symmetrically arranged out-of-plane polarized patches connected with synthetic inductance circuits. Without changing physical configuration, transmitted phase of can be shifted arbitrarily in 0 ∼ 2 π range metasurface. Furthermore, relatio...

Coatings play a crucial role in protecting ships and marine structures from corrosion extending their service life. The reliability of these coatings depends on proper maintenance, which turn, relies the application reliable diagnostic techniques. Non-destructive testing (NDT) techniques are useful material diagnostics, such as detecting debonded zone water. However, challenging access environm...

Cost-effective and reliable damage detection is critical for the utilization of composite materials. This paper presents part of an experimental and analytical survey of candidate methods for in-situ damage detection of composite materials. Results are presented for the optimization of Lamb wave techniques applied to quasi-isotropic graphite/epoxy specimens containing representative damage mode...