Control of vibrations, induced by magneto-electric load, using piezoelectric actuator in a magneto-electroelastic micro beam is taken into account. Wellposedness and controllability properties the system discussed. Performance index functional to be minimized on control duration chosen as modified kinetic energy beam. By means maximum principle, optimal vibration problem transformed solving par...

In this work, we investigate non-Hermitian elastic waveguides with periodically applied proportional feedback efforts, implemented through piezoelectric sensors and actuators. Using onedimensional spectral models for longitudinal motion, it is shown that dispersion diagrams of family structures exhibit non-reciprocal imaginary frequency components, manifesting as wave attenuation or amplificati...

Gallium nitride (GaN), in contrast to other commonly used piezoceramics, is a semiconductor that exhibits piezoresistive in addition to piezoelectric effects. The large piezoresponse – combined piezoelectric and piezoresistive effects – of GaN points out possible applications of GaN-based material systems in resonant devices. While the static piezoresistive response of GaN is small [1], the tim...

From last few decades’ piezoelectric materials are widely used in the field of structural health monitoring because its ability for voltage dependent actuation. This paper presents analytical modeling and simulation a hybrid (electromagnetic piezoelectric) energy harvester (having nonlinear behavior) that generates power from vibrations bridges structure systems. The modeled is comprised two be...

Soft robots and devices exploit highly deformable materials that are capable of changes in shape to allow conformable physical contact for controlled manipulation. While soft resilient mechanical impact, they susceptible damage, such as tears punctures. The development self-healing actuators continues attract increasing interest, particular, with respect integrating polymers create bioinspired ...

On the cover: Representation of the flow around a helicopter blade with a Gurney flap. Summary Today's helicopters are the result of collaborative work in mechanical engineering and aeronautics. The European project " Clean Sky " aims at improving the efficiency and the global transport quality of aircraft. In the field of rotorcraft, the research in this project is currently focussing on activ...