Fibre-optical raster sensing device for monitoring metal rust

A technology of optical fiber gratings and sensing devices, which is applied in measuring devices, color/spectral characteristic measurement, weather resistance/light resistance/corrosion resistance, etc. It can solve the problems of inapplicable early and normal operation period monitoring, insensitivity to initial corrosion, etc. problem, to achieve the effect of simple structure, low cost and large parameter range

Inactive Publication Date: 2009-06-03
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the signal is reliable, but it is not sensitive to initial corrosion and is not suitable for early and normal operation monitoring

Method used

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  • Fibre-optical raster sensing device for monitoring metal rust
  • Fibre-optical raster sensing device for monitoring metal rust
  • Fibre-optical raster sensing device for monitoring metal rust

Examples

Experimental program
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Embodiment Construction

[0020] see first figure 1 , figure 1 It is a structural schematic diagram of Embodiment 1 of the present invention. 1 in the figure is a spring made of the metal material to be monitored, and the drawing in the figure is a cross-sectional view of the spring. 2 is a reflective fiber Bragg grating, 3 is the first fiber optic connector connected with the first fiber Bragg grating. The first support seat 4 and the second support seat 41 are support seats for fixing the spring and the first fiber grating 3 , and a small hole is drilled in the center of the two support seats along the axial direction so that the optical fiber can pass through. When installing the device of this structure, the spring 1 made of the metal to be monitored is fixed between the first support seat 4 and the second support seat 41, and the design of the first support seat 4 and the second support seat 41 allows the spring to move axially Tension and compression occur, but no bending occurs. The spring 1...

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PUM

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Abstract

The invention relates to a device which is used in the metal structure material rusting away the condition monitor the metal to rust away the monitor optical fiber diffraction grating transmitter, constitutes including the first support abutment, through one to skids in the first support abutment one side along the week skids the joint of casing second support abutment, in should skid on the drive pipe with to wait the monitor metal material to circle the system as soon as to have the compression remainder the spring and the agglutination skid on the drive pipe in the technique, in should skid the drive pipe central shaft position to be gummy as soon as receives the first optical fiber diffraction grating which the spring resiliency stretches, a this first optical fiber diffraction grating light end fixes in on the first support abutment which states and stretches out a free electricity, This optical fiber free electricity connects the first fiberoptic connector; In states the optical fiber free electricity which the second support abutment one side stretches out in addition to connect the second fiberoptic connector. This invention has the simple structure, the easy manufacturing, low cost and good robustness.

Description

technical field [0001] The invention is related to metal materials, and is a metal corrosion monitoring optical fiber grating sensor device for monitoring the corrosion status of metal structural materials. The monitoring of the occurrence of corrosion can also be used for the corrosion of structures of other metal materials in the ambient atmosphere. Background technique [0002] Reinforced concrete and steel cables are the most widely used building structural materials in modern infrastructure. Steel has the advantages of high strength, easy processing, and abundant resources on the earth, but iron, the main component of steel, is easily oxidized and corroded by moisture and oxygen. Corrosion of steel cables and steel bars leads to a decrease in the strength of the structure, and even leads to the collapse of the structure, resulting in huge losses of human life and property. Aluminum and other metal materials are also widely used structural materials, such as aircraft a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G01N17/00G01N21/84G01N21/17
Inventor 方祖捷瞿荣辉蔡海文阳莎耿建新
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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