期刊
OPTICS EXPRESS
卷 26, 期 12, 页码 15199-15210出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.015199
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- School of Mechanical Engineering of Xi'an Jiaotong University
- Northwest Institute of Nuclear Technology
Most of fiber-optic pressure sensors used in shock wave measurements are based on deformations of sensing elements. These approaches result in low dynamic pressure ranges for these sensors used in the air. A novel fiber-optic method based on the relationship between pressure and the acceleration of a diaphragm is proposed to obtain peak reflected pressure of shock waves in the air. The optical sensor is designed with a thin circular diaphragm as the sensing element, and the Fabry-Perot optical interferometry is used to detect the acceleration of the diaphragm. Shock tube and explosive-blast experiments prove that the proposed fiber optic method is feasible and has the advantages of no calibration, high precision and fast response time. The proposed fiber-optic pressure method has potential in practical applications for shock wave measurements. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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