Glass fiber/epoxy resin composite material substrate type fiber bragg grating sensor

Abstract

The invention discloses a glass fiber / epoxy resin composite material substrate type fiber bragg grating sensor and a manufacturing method thereof. The sensor comprises a glass fiber / epoxy resin composite material substrate, at least one fiber bragg grating loaded on the glass fiber / epoxy resin composite material substrate and dry glass fiber cloth covering above the fiber bragg grating. The dry glass fiber cloth is infiltrated by liquid epoxy resin. The liquid epoxy resin is filled between the dry glass fiber cloth and the glass fiber / epoxy resin composite material substrate so as to carry out curing molding. In the invention, interlayer interface intensity of the fiber bragg grating sensor is guaranteed, based on that, a series of defects existing in a traditional fiber bragg grating sensor are overcome; the fiber bragg grating sensor can accurately measure a temperature and strain of a measured structure component; disadvantages of a domestic current externally-bonded fiber bragg grating sensor are avoided; and simultaneously good economic benefits are possessed.

Description

technical field [0001] The invention relates to an optical fiber grating sensor for structural health monitoring and intelligent structure control, in particular to a glass fiber / epoxy resin composite substrate type optical fiber grating sensor, which belongs to the technical field of optical fiber communication, sensing and measurement. Background technique [0002] The health monitoring and intelligent structure control of major engineering structures both involve the measurement of the current state of the structure. Fiber gratings are widely used in aerospace and large civil engineering structures due to their advantages of light weight, small size, high sensitivity, corrosion resistance, and anti-electromagnetic interference. It is widely used in health monitoring and intelligent control. [0003] The engineered fiber grating sensor is mainly designed and prepared from three aspects: structural design, material selection, and packaging process. The packaging process is ...

AI Technical Summary

Problems solved by technology

On the basis of ensuring the interlayer interface strength of the fiber grating sensor, a series of defects in the traditional fiber grating sensor are solved, and the fiber grating sensor can accurately measure the temperature and strain of the measured structural part, making up for the existing domestic externally attached optical fiber Insufficient of the grating sensor, at the same time has a good economic benefit

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