Flexural Response Analysis of Partly Overlapped Piezo Sensor and Actuator on an Infinite Beam

Abstract

This paper investigates theoretical flexural response of a partly overlapped piezoceramic PZT sensor and actuator pair which is attached on an infinite beam. In this study, three different overlapped lengths between the piezo sensor and actuator are considered and the response of each sensor and actuator is modeled theoretically and analyzed in the aspect of wave propagation in the beam. The out-of-plane flexural waves due to the action of the actuator are modeled in the beam and the sensor is modeled to detect the flexural waves. Because of the characteristics of the partly overlapped sensor and actuator pair, the sensor-actuator responses show specific properties after numerical analysis. In terms of frequency response function, the results of the three different partly overlapped cases display the magnitude and phase responses provide a better understanding in designing a vibration control system.