Investigations on the Vibration Sensing Behavior of Partially Coated Metal Core Piezoelectric Fiber

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (24) : 20-25.

ZHOU Gui-xiang1，HUANG Xiao-mei2，SHEN Hui3，BIAN Yi-xiang1

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Abstract

A partially coated metal core piezoelectric fiber (PMPF) is one of the new types of piezoelectric devices for sensors. The theoretical model was derived when a cantilevered PMPF was fixed in a vibration source .When a sinusoidal vibration or impulsive vibration was applied on the fixed end of a cantilevered PMPF，the voltage of PMPF was calculated based on the piezoelectric constitutive equations and the vibration theory. The effects of structural parameters of PMPF on the first resonance frequency were studied theoretically. The contributions to the voltage of the fiber by the distribution angle of surface electrodes and the length of fiber were also analyzed. The sensing properties of the sensor were studied experimentally. The experimental results show that the sensor has a good performance on measuring the frequency and amplitude of the sinusoidal vibration and the impulsive vibration.

Key words

piezoelectric fiber / piezoelectric sensor / vibration sensor / directional sensor / biomimetics

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ZHOU Gui-xiang1，HUANG Xiao-mei2，SHEN Hui3，BIAN Yi-xiang1. Investigations on the Vibration Sensing Behavior of Partially Coated Metal Core Piezoelectric Fiber[J]. Journal of Vibration and Shock, 2015, 34(24): 20-25

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