In the present paper, a review on piezoelectric sensing of mechanical deformations and vibrations of so-called smart or intelligent structures is given. After a short introduction into piezoelectric sensing and actuation of such controlled structures, we pay special emphasis on the description of some own work, which has been performed at the Institute of Technical Mechanics of the Johannes Kep...

Elastic metamaterials have been extensively investigated due to their significant effects on controlling propagation of elastic waves. One of the most interesting properties is the generation of band gaps, in which subwavelength elastic waves cannot propagate through. In the study, a new class of active elastic metamaterials with negative capacitance piezoelectric shunting is presented. We firs...

The purpose of this work is to control the vibration of the plate with the help of fuzzy logic controller. A finite element model of a two-dimensional cantilever plate instrumented with a piezoelectric patches sensor-actuator pair is derived. The contribution of piezoelectric sensor and actuator layers on the mass and stiffness of the plate is considered. Fuzzy logic optimal control scheme have...

The paper describes in progress research activities aimed at verifying the possibility of designing active vibration control systems based on piezoelectric devices. In particular a wholly clamped rectangular flat panel is mechanically excited and controlled with piezoceramic patches. Vibrations reduction tests and then correlations with numerical predictions, based on an integrated piezostructu...

Increasing sensitivity and signal to noise ratios of conventional wave sensors is an interesting topic in structural health monitoring, medical imaging, aerospace and nuclear instrumentation. Here, we report the concept of a gradient piezoelectric self-sensing system by integrating shunting circuitry into conventional sensors. By tuning circuit elements properly, both the quality and quantity o...

In this paper we consider the problem of homogenization of equations describing linear thin plates excited by actuators made of piezoelectric ceramics (see e.g. 1]). It is assumed that the number of actuators goes to innnity whereas their dimension tends to zero. The procedure of homogenization is based on the theory of two-scale convergence studied in 2]. The speciic of the problem considered ...

This work focus on the structural health monitoring of aircrafts parts specimen structures made of 2024 Aluminum alloys. In this paper we demonstrate the feasibility of a new non destructive control method capable to probe very large structures within a short time. The method we developed is based through a wide piezoelectric sensors network on a smart comparison between two acoustic signatures...

Active control methods can be used to eliminate undesired vibrations in engineering structures. Using piezoelectric smart structures for the active vibration control has great potential in engineering applications. In this thesis, numerical and experimental studies on active vibration control of mechanical systems and smart structures have been presented. An integrated analysis procedure has be...

This paper presents a simulation study concerning the low-mid frequencies control of flexural vibration in a lightly damped thin plate, equipped with five time-varying shunted vibration absorbers. The panel is excited by a rain-on-the-roof broad frequency band stationary disturbance. The absorbers are composed of piezoelectric patches connected to time-varying RL shunt circuits. Continuous, swe...

A fully-coupled multiphysics modelling is applied for the problem of simultaneous active and passive reduction of noise generated by a thin panel under forced vibration providing many relevant results of various type (noise and vibration levels, necessary voltage for control signals, efficiency of the approach). The active approach is validated experimentally. To this end, the plate of panel is...