Self monitoring DOFS-FRP cloth and monitoring method thereof

A DOFS-FRP and self-monitoring technology is applied in the direction of measuring the change force of the optical properties of the material when it is stressed, which can solve the problems of sticking difficulties and achieve the effect of novel design and real-time force performance

Active Publication Date: 2019-06-11
DONGGUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of self-monitoring DOFS-FRP cloth in view of the deficiencies in the prior art, and this self-monitoring DOFS-FRP cloth is novel in design, can effectively solve the gap between the resistance strain gauge, the fiber grating strain sensor and the FRP cloth. Difficult pasting problems, and can realize real-time and online monitoring of the mechanical properties of FRP fabrics

Method used

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  • Self monitoring DOFS-FRP cloth and monitoring method thereof
  • Self monitoring DOFS-FRP cloth and monitoring method thereof
  • Self monitoring DOFS-FRP cloth and monitoring method thereof

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Embodiment Construction

[0038] The present invention will be described below in conjunction with specific embodiments.

[0039] Such as figure 1 and figure 2 As shown, a self-monitoring DOFS-FRP cloth includes FRP cloth 1 and a distributed optical fiber sensor 2 (referred to as DOFS) in the shape of a long cable and continuously extending. The distributed optical fiber sensor 2 includes a built-in bare optical fiber 21. An outer protective sheath 22 wrapped around the periphery of the built-in bare optical fiber 21 and extending along the length direction of the built-in bare fiber 21 .

[0040]Among them, the FRP cloth 1 is formed by weaving fibers through a loom. During the process of weaving and forming the FPR cloth through the loom, the fibers that make up the FRP cloth 1 are fed into the loom together with the distributed optical fiber sensor 2, and the distributed optical fiber sensor 2 is weaved and embedded in the FRP cloth 1, and the distributed optical fiber sensor 2 and the FRP cloth 1...

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Abstract

The invention discloses self monitoring DOFS-FRP cloth and a monitoring method thereof. The self monitoring DOFS-FRP cloth comprises FRP cloth and a distributive optical fiber sensor, wherein the distributive optical fiber sensor comprises a built-in bare optical fiber and an externally covered protection sleeve; the distributive optical fiber sensor is woven and embedded into the FRP cloth; the two end parts of the distributive optical fiber sensor are respectively provided with optical fiber connectors; the self monitoring DOFS-FRP cloth can effectively solve the problem of pasting difficulty among a resistance strain gauge, an optical fiber grating strain sensor and the FRP cloth; and the real-time online monitoring can be realized. The monitoring method comprises the following technical steps of a, preparing the distributive optical fiber sensor; b, preparing the self monitoring DOFS-FRP cloth; c, installing the optical fiber connectors; d, installing the self monitoring DOFS-FRP cloth; e, naturally curing epoxy resin; and f, connecting a fiber-optic modem. The monitoring method has the advantages that the real-time online monitoring of the stress performance of the FRP cloth can be effectively realized.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a self-monitoring DOFS-FRP cloth and a monitoring method thereof. Background technique [0002] FRP cloth has the advantages of light weight, good corrosion resistance, good durability, good fatigue resistance, and high tensile strength. It has been widely used in the field of civil engineering, especially for the reinforcement of existing structures. [0003] It should be pointed out that for FRP cloth, its mechanical properties are generally monitored by resistance strain gauges and fiber Bragg grating strain sensors; however, the mechanical properties of FRP cloth are monitored by resistance strain gauges and fiber Bragg grating strain sensors. Sheet and FBG strain sensors monitor sticking difficulties. [0004] In view of the above-mentioned problem of difficult bonding of the resistance strain gauge and the fiber Bragg grating strain sensor, the following methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/24
Inventor 郑愚周玲珠叶宇霄刘利川张黎飞丁其乐
Owner DONGGUAN UNIV OF TECH
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