Research on piezoelectric pressure sensor for shock wave load measurement

Yingjun Li; Zhikang Yang; Guicong Wang; Cong Yang

doi:10.1016/j.isatra.2020.05.018

Research on piezoelectric pressure sensor for shock wave load measurement

ISA Trans. 2020 Sep:104:382-392. doi: 10.1016/j.isatra.2020.05.018. Epub 2020 May 13.

Authors

Yingjun Li¹, Zhikang Yang², Guicong Wang², Cong Yang²

Affiliations

¹ School of Mechanical Engineering, University of Jinan, Jinan, 250022, PR China. Electronic address: me_liyj@ujn.edu.cn.
² School of Mechanical Engineering, University of Jinan, Jinan, 250022, PR China.

PMID: 32423613
DOI: 10.1016/j.isatra.2020.05.018

Abstract

The paper presents piezoelectric pressure sensor to measure the dynamic pressure of explosive shock wave in real time. Crystal group structural layout with acceleration compensation is designed by adding mass blocks. The static and dynamic model of the sensor is established to calculate the sensitivity and natural frequency. The influence of structural parameters of the sensor on its static and dynamic characteristics is analyzed. The mapping relationship between input and output of the sensor under different pressure loads is obtained by simulation. Prototype of the sensor under shock wave load is fabricated. Static and dynamic calibration platforms are built to complete calibration experiments. The experimental results show that the sensor can meet the measurement requirements of high frequency dynamic load signals.

Keywords: Acceleration parasitic; Calibration experiment; Piezoelectric; Pressure sensor; Shock wave.