There is a possibility of mechanical energy flow management through the acoustical logical devices (ALDs) with tunable (controllable) spectral characteristics. It is expected that application of such devices may significantly reduce vibrations and noise by performing logical operations on wavefields

Wave motion arises from local material interactions. Equilibrium of elastic and inertial forces at material points governs global wave propagation patterns. Momentum balance equations are typically expressed in the form of PDEs, which – after discretisation – yield iteration equations

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Nonlinear effects exhibited by crack-wave interactions can be simulated using different models, for example: bi-linear stiffness (clapping mechanism employing bi-linear stiffness simplifications), hysteresis (phenomenological), rough surfaces contact and non-classical dissipation. In all, the nonlinear mechanisms can be classified according to

It is widely acknowledged that hybrid modeling approaches for dynamical problems allow for taking advantage of specific features of the methods involved in a hybrid model. Such coupling strategies are typically difficult to establish, especially for transient dynamics. The main

It is widely confirmed that guided elastic waves are of great interest for structural health assessment in active and passive approaches. However, multimodal and dispersive character of wave propagation make data processing, analysis, and interpretation difficult. Therefore modelling and numerical

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Analysis of elastic wave propagation in nonlinear media has gained recent research attention due to the their attractive properties for NDT and SHM. This creates opportunities for increased accuracy of damage detection and localization, development of new structural monitoring strategies,

There exist many different mechanisms that induce changes into guided wave signals – generated and received by piezoceramic transducers – due to temperature variations.

• This includes the following effects:Changes of the plate stiffness affect the waves phase/group velocity at a