Shape Control and Active Vibration Damping of Laminated Composite Structures Using Piezoelectric Sensors and Actuators

The main scope of this article is to simulate a cracked pipeline embedded with piezoelectric sensors and actuators utilizing bond graph approach. Piezoelectric sensors/actuators are becoming very popular in various applications such as health monitoring, active vibration control or noise reduction, and as a part of the systems called smart structures. The proposed bond graph structure in this study, graphically illustrates the power flow between the electrical and mechanical frameworks included in the system. In addition, the proposed framework makes it possible to utilize a modular structure for separately representing the electrical polarization of the material and its macroscopic electrical and mechanical effects. Simulation results illustrate that at the location of the crack the equivalent impedance is increased and the capacitance is decreased in comparison with the intact region.

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Dynamic modelling and active vibration controller design for a cylindrical shell equipped with piezoelectric sensors and actuators

Journal of Sound and Vibration ◽

10.1016/j.jsv.2008.09.051 ◽

2009 ◽

Vol 321 (3-5) ◽

pp. 510-524 ◽

Cited By ~ 48

Author(s):

Moon K. Kwak ◽

Seok Heo ◽

Moonsan Jeong

Keyword(s):

Cylindrical Shell ◽

Controller Design ◽

Dynamic Modelling ◽

Piezoelectric Sensors ◽

Sensors And Actuators ◽

Piezoelectric Sensors And Actuators ◽

Active Vibration

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The Study of a Control Signal’s Phase Shift Influence on the Efficiency of a System for Active Vibration Damping Based on MFC Piezoelectric Transducers

MATEC Web of Conferences ◽

10.1051/matecconf/202031801005 ◽

2020 ◽

Vol 318 ◽

pp. 01005

Author(s):

Marek Płaczek

Keyword(s):

Phase Shift ◽

Smart Materials ◽

Composite Structures ◽

Fiber Composite ◽

Vibration Damping ◽

Piezoelectric Transducers ◽

Piezoelectric Composite ◽

Active Vibration Damping ◽

Active Vibration ◽

The Impact

Active vibration damping of mechanical systems based on applications of smart materials has a large application potential and is getting more and more popular. In active vibration systems the fast response of actuators to the signals generated by sensors is one of the most important element that decides of the system’s efficiency because the idea is to generate force by active elements that will suppress the vibrations detected by the sensors. In this paper results of laboratory tests of a control signal’s phase shift influence on the efficiency of a system for active vibration damping based on application of Macro Fiber Composite (MFC) piezoelectric transducers are presented. MFCs are modern piezoelectric composite transducers produced as a thin, elastic films and can be easily installed on the surface of the mechanical subsystem or laminated in composite structures. The impact of the phase shifting between signals generated to power the actuator on the damping efficiency was verified and analysed. It was verified in what phase angle the damping of vibration has the best efficiency and if the shift of the signals causes the linear loss of the system efficiency. It was also verified whether it causes the same effects in both directions of shifting (advance or delay in the phase of the signal supplying the damper relative to the signal generated by the beam’s vibration).

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