Research on FBG High Temperature Sensor Used for Strain Monitoring

Abstract:

Strain sensing is widely used in safety monitoring of high temperature pressure pipes in oil companies and power plants. A novel high-temperature strain sensor was researched based on FBG(Fiber Bragg Grating) and the elastic high-temperature alloy in this paper. First, high-temperature Polyimide fiber FBG was prepared and tested in high temperature chamber. Second, a novel T strain gauge structure of three FBG was designed and fabricated on the elastic high-temperature alloy. This strain gauge could be applied in measurement of two-dimensional high-temperature strain sensing. In the end, a equi-intensity cantilever was adopted to test the high-temperature FBG strain sensor and testing results verified that the T type FBG strain sensor was suitable for high-temperature strain sensing with reliable performance in 300°C environment.

• Periodical: Applied Mechanics and Materials (Volumes 341-342)
• Pages: 851-855
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.341-342.851
• Online since: July 2013
• Authors: Yue Ming Liu, Qing Mu Cai, Jun Lou
• Keywords: Equi-Intensity Cantilever, Fiber Bragg Grating (FBG), High Temperature Strain, Sensor

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