Active vibration control of a composite sandwich plate

Abstract

Active vibration control of a free-edge rectangular sandwich plate is proposed and tested. The experimental setup consists of a honeycomb panel having a carbon-fiber reinforced polymer (CFRP) outer skins and a polymer-paper core, subjected to an orthogonal disturbance, due to an electrodynamics exciter and controlled by Macro Fibre Composite (MFC) actuators and sensors. MFC parches consist of rectangular piezoceramic rods sandwiched between layers of adhesive, electrodes and polyamide film. The MFC actuators and sensors are controlled by a programmable digital dSPACE (R) controller board. The control algorithm proposed in this paper is based on the Positive Position Feedback (PPF) technique and is successfully applied with different combinations of inputs/outputs (Single Input Single Output, MultiSISO, Multi Input Multi Output) in order to control the first four normal modes. The control appears to be robust and efficient in reducing vibration in linear (small amplitude) and nonlinear (large amplitude) vibrations regimes, although the structure under investigation exhibits a relativity high modal density, i.e., four resonances in a range of about 100 Hz. The control strategy allows to effectively control each resonance both individually or simultaneously

Sliding mode predictive vibration control of a piezoelectric flexible plate

“…Gao et al (2017) utilized fiber Bragg grating (FBG) sensors to achieve the vibration shape reconstruction of an aircraft model. In the experimental study of a free-edge rectangular sandwich plate, the vibration is sensed by the Macro-Fiber Composite (MFC) (Zippo et al, 2015). However, with the installation of these contact sensors, unwanted mass and rigidity are brought, which will greatly affect the reliability and accuracy of measurement, especially when flexible structures are involved.…”

Dynamic characteristic of partially debonded sandwich of ferry ro-ro’s car deck: a numerical modeling

“…The damage state associated with the presence of the debonding can be diagnosed by specific non-destructive damage detection method, i.e., numerical dynamic analysis [5]. This numerical dynamic analysis is usually associated with the use of finite element analysis and has been widely used to assess vibration in many structures [6,7]. The results of the dynamic finite element analysis can be used to strengthen the damage detection efficiency in the structural health monitoring system.…”

Numerical analysis based on finite element method of active vibration control of a sandwich plate using piezoelectric patches

“…Sanjay et al (2009) developed a finite element model for the analysis of three layers sandwich plate treated with Passive Constrained Layer Damping (PCLD) and Active Constrained Layer Damping (ACLD) to find the effect of constrained layer damping in controlling the vibration of sandwich structure. [19] investigated the active vibration control of a free-edge rectangular sandwich plate. They proposed a control algorithm based on the (PPF) technique and in order to control the first four normal modes.…”