Mixed intelligent carbon fiber board

Abstract

A mixed intelligent carbon fiber board comprises carbon fiber reinforced plastic, high-strength steel wires embedded in the carbon fiber reinforced plastic and an optical fiber grating sensor, whereinthe carbon fiber reinforced plastic is composed of carbon fiber yarn and matrix resin, and the matrix resin is epoxy resin or vinyl ester resin; the optical fiber grating sensor is connected with anoptical fiber grating demodulator through a test jumper. The tensile strength of the high-strength steel wires axially embedded in the carbon fiber reinforced plastic is not smaller than 1500 MPa, thenumber of the high-strength steel wires is m*n, m is the number of rows of the high-strength steel wires, n is the number of the high-strength steel wires in each row, m is an integer larger than orequal to 1 and smaller than or equal to 5, and n is an integer larger than or equal to 1 and smaller than or equal to 50; the optical fiber grating sensor is composed of x single-mode optical fibers written into y optical fiber gratings, x is an integer larger than or equal to 1 and smaller than or equal to 5, and y is an integer larger than or equal to 1 and smaller than or equal to 10. The mixedintelligent carbon fiber board can monitor a reinforced structure and is low in cost, economical and practical.

Description

Technical field [0001] The invention relates to a carbon fiber board, in particular to a hybrid smart carbon fiber board. Background technique [0002] Carbon fiber board is widely used in the field of concrete structure reinforcement because of its excellent corrosion resistance, fatigue resistance, high specific strength, and convenient construction. However, due to the current main raw material used to produce carbon fiber board-high-performance carbon fiber yarn , The price is high (6-7 times that of steel), resulting in the high cost of the carbon fiber board produced; secondly, the carbon fiber filaments have poor shear resistance and will break instantly when accidentally damaged by shear, which poses safety risks. These problems All restrict the promotion and application of carbon fiber board to a certain extent. [0003] With the gradual promotion of the application of carbon fiber board in the reinforcement of concrete structures, the state of the reinforced structure un...

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Problems solved by technology

[0002] Carbon fiber plates are widely used in the field of concrete structure reinforcement because of their excellent corrosion resistance, fatigue resistance, high specific strength, and convenient construction. , the price is high (6 to 7 times that of steel), which leads to the high cost of the produced carbon fiber board; secondly, the shear resistance of carbon fiber wire is poor, and it will break instantly when it is accidentally sheared and damaged, posing safety hazards. These problems To a certain extent, it restricts the popularization and application of carbon fiber panels.

[0003] With the gradual promotion of the application of carbon fiber panels in concrete structure reinforcement projects, the state of the reinforced structure under load and the stress of the carbon fiber panels themselves have begun to attract attention in the industry; the publication number is 105716758A, and the name of the invention is "a fiber reinforced "Plastic smart carbon board and its preparation method" patent application discloses a smart carbon fiber board, which embeds fiber gratings into the carbon fiber board, so that the carbon fiber board has monitoring capabilities, but the fiber-reinforced plastic carbon board used still has high cost, The problem of poor shear resistance has more scientific significance than practical application

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