System and method for embedding optical fiber grating sensor in fiber high polymer composite material

Abstract

The invention discloses a system for embedding an optical fiber grating sensor in a fiber high polymer composite material, which comprises a fiber frame, a fiber guiding stranding device, a resin impregnating bath, a fiber tension distributor, a pultrusion die head, a degumming device, a thermosetting device and a towing device through which a fiber bundle and an optical fiber grating sensor sequentially pass, wherein a leading-in die pin is built in the pultrusion die head. The invention also discloses a corresponding method which comprises the following steps: when the fiber bundle and the optical fiber grating sensor enter the pultrusion die head, the fiber bundle is dispersed on the peripheral circumference of the leading-in die pin; the optical fiber grating sensor penetrates out from a leading-in hole of the leading-in die pin and is led into the fiber bundle; the optical fiber grating sensor is wrapped in the fiber bundle and passes through the pultrusion die head together withthe fiber bundle; and finally, the optical fiber grating sensor embedded fiber high polymer composite material is produced. The optical fiber grating sensor embedded fiber high polymer composite material produced in the invention can be used as a structural stress part and can also be widely applied to health monitoring of constructions and structures of buildings, roads, bridges and the like.

Description

technical field [0001] The invention relates to a fiber polymer composite material (FRP for short) used in engineering structures such as buildings, roads and bridges, and in particular to a system in which a fiber grating sensor is embedded in the fiber polymer composite material. [0002] The invention also relates to a method for embedding the optical fiber grating sensor in the fiber high polymer composite material. Background technique [0003] Due to the large volume, long span, large distribution area, and long service life of major bridge engineering structures and infrastructure, traditional sensors have separate measurement functions for temperature, pressure, and deformation, but the long-term monitoring system composed of them has performance stability and durability. Neither the distribution range nor the distribution range can well meet the actual engineering needs. With the development of intelligent sensing materials, high-performance sensors and their testin...

AI Technical Summary

Problems solved by technology

However, the current embedding technology has defects such as complicated procedures and poor embedding effects. Therefore, how to make fiber grating sensors easier and better embedded in fiber-polymer composite materials has become a technical problem that people urgently need to solve.

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