Blind Pipe Type Fiber Bragg Grating Hydrostatic Gauge

Abstract:

A blind pipe type fiber Bragg grating hydrostatic gauge is developed to measure the pressure of liquid. In the hydrostatic gauge, the inside of elastic tube is suffered by the pressure of liquid and drives the wavelength shift of a fiber Bragg grating mounted on the outside of elastic tube. For eliminating the disturbance of temperature variation, the other grating is mounted on the n type sheet metal and is immune to the applied stress strain of elastic tube. The hydrostatic experiment indicates that the pressure sensitivity of the hydrostatic gauge is 0.425 nm/MPa, when the original Bragg wavelength of pressure-sensitized grating is 1557.510 nm.

• Periodical: Applied Mechanics and Materials (Volumes 599-601)
• Pages: 1182-1185
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.599-601.1182
• Online since: August 2014
• Authors: Mian Huang*, Tao Xie, Jia Qi Li, Ying Na Li, Zheng Gang Zhao, Wen Bing Wu, Xin Ouyang, Chuan Li
• Keywords: Apparent Thermal Strain, Blind Pipe, Fiber Bragg Grating Strain Sensor, Pressure, Strain

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