A self-monitoring dofs-frp distribution and its monitoring method

A DOFS-FRP, self-monitoring technology, applied in the direction of force measurement by measuring the change of optical properties of materials when they are stressed, can solve problems such as difficulty in pasting, and achieve the effect of novel design and real-time force performance.

Active Publication Date: 2021-08-06
DONGGUAN UNIV OF TECH
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  • Abstract
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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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  • A self-monitoring dofs-frp distribution and its monitoring method
  • A self-monitoring dofs-frp distribution and its monitoring method
  • A self-monitoring dofs-frp distribution and its monitoring method

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Embodiment Construction

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

[0039] like 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 ar...

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Abstract

The invention discloses a self-monitoring DOFS-FRP cloth and a monitoring method thereof. The self-monitoring DOFS-FRP cloth includes an FRP cloth and a distributed optical fiber sensor. The sensor is weaved and embedded in the FRP cloth, and the two ends of the distributed optical fiber sensor are respectively equipped with optical fiber connectors; the self-monitoring DOFS‑FRP cloth can effectively solve the problem of sticking the resistance strain gauge, the fiber grating strain sensor and the FRP cloth, and It can realize real-time and online monitoring. The monitoring method includes the following process steps: a, preparing distributed optical fiber sensors; b, preparing self-monitoring DOFS-FRP cloth; c, installing optical fiber connectors; d, self-monitoring DOFS-FRP cloth installation; e, natural curing of epoxy resin; f. Connect the optical fiber modem; this monitoring method can effectively realize the real-time and online monitoring of the force performance of FRP cloth.

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 Patents(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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