Characteristics of Piezoelectric Sensor for Fluid Impact Pressure

J. Ocean Eng. Technol. 2009;23(6):17-22.

Choi Young-Myung,Kim Hyun-Yi,Park Jun-Soo,Kwon Sun-Hong,Kim Dong-Jean

Department of Naval Architecture and Ocean Engineering Pusan National University,Department of Naval Architecture and Ocean Engineering Pusan National University,Advanced Ship Engineering Research Center Pusan National University,Department of Naval Ar

유체 충격 압력 측정용 압전 센서 특징

최영명,김현이,박준수,권순홍,김동진

부산대학교 조선해양공학과,부산대학교 조선해양공학과,부산대학교 첨단조선공학연구센터,부산대학교 조선해양공학과,한라대학교 컴퓨터응용설계과

Keywords: Fluid impact pressure, Piezoelectricity, Temperature effect, Flush mounting, AC coupling, DC coupling

핵심용어: 유체 충격 압력, 압전성, 온도 효과, 플러시 마운팅, 교류 커플링, 직류 커플링

Abstract

This study presents an investigation of the characteristics of piezoelectric sensors whose main utilization is to measure impact pressure. The piezoelectric sensors were tested from several points of view. Their characteristics were investigated for repeatability, the effect of the diameter, temperature effect, water purity, flush mounting, and AC and DC coupling. Out of these, it was revealed that the temperature effect is very significant. The characteristics of the AC and DC coupling are also very important in understanding the time history of the impact pressure.