A detection device and method for metal cracks
A detection device and crack technology, applied in the field of sensing, can solve the problems of low detection accuracy of metal crack features, sensitive metal crack position, and difficult to detect metal conformality, etc., to solve the problem of metal crack position sensitivity, high detection sensitivity, Detect accurate effects
Active Publication Date: 2022-07-29
GUANGDONG UNIV OF TECH
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[0005] The embodiments of the present application provide a detection device and method for metal cracks, which are used to solve the problem that the existing antenna sensor detection technology is sensitive to the position of metal cracks, has low detection accuracy of metal crack features, and is difficult to conform to the metal to be tested. technical issues
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[0032] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0033] see figure 1 , a detection device for metal cracks provided by an embodiment of the present application includes: a rectangular waveguide, a network analyzer and a computer terminal; two ends of the rectangular waveguide are respectively connected to the network analyzer through coaxial cables, and an external c...
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Abstract
The present application discloses a detection device and method for metal cracks, wherein the device comprises: a rectangular waveguide, a network analyzer and a computer terminal; two ends of the rectangular waveguide are respectively connected to the network analyzer through coaxial cables; To the computer terminal; the bottom wall of the rectangular waveguide is open, the rectangular waveguide is placed on the metal to be tested with cracks, and the traveling wave transmission direction of the rectangular waveguide is perpendicular to the crack; the rectangular waveguide is used for: generating traveling waves; network analyzer Used to: collect the S21 parameters of the rectangular waveguide; the computer terminal is used to: calculate the notch frequency of the rectangular waveguide according to the S21 parameter, and characterize the crack characteristics of the metal to be tested according to the notch frequency, thus solving the problem of the existing antenna sensor detection technology. The metal crack is sensitive to the position, the detection accuracy of metal crack is low, and it is difficult to conform to the technical problem of the metal to be tested.
Description
technical field [0001] The present application relates to the field of sensing technology, and in particular, to a detection device and method for metal cracks. Background technique [0002] The metal surfaces of infrastructure such as pipelines, bridges, dams, and railroad tracks often experience cracks and even fractures that can be traced back to the effects of extreme weather, such as storms, or to frequent stress-induced crack propagation. Therefore, to avoid security incidents, routine maintenance and online structural health monitoring of these infrastructures are very necessary. Traditional non-destructive testing techniques are not suitable for long-term monitoring due to cumbersome machines, high testing costs, low testing efficiency, and low automation. [0003] Structural health monitoring based on resonant electromagnetic sensors (such as antennas, apertured waveguides) and their sensing systems has the advantages of small size, light weight, and low manufactur...
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IPC IPC(8): G01N23/00
Inventor 陈泽彬陈卓著张俊黄楚钿曹杰胡文龙
Owner GUANGDONG UNIV OF TECH