Variable-capacitance sensor for monitoring surface corrosion of aluminum alloy and manufacturing method of variable-capacitance sensor
A technology for aluminum alloy surface and corrosion monitoring, which is applied in the direction of material capacitance, material resistance, etc., can solve the problems of unable to monitor aluminum alloy corrosion, and cannot give corrosion depth, etc., to meet the requirements of monitoring and evaluation, simple structure, and reliability high effect
Inactive Publication Date: 2013-10-16
XI AN JIAOTONG UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the corrosion detection and evaluation methods of aluminum alloy materials are mainly through visual inspection and computer image fractal technology. These methods can only describe the size of the corrosion area, but cannot give the depth of corrosion, and cannot monitor the corrosion of aluminum alloys in real time.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] Below in conjunction with accompanying drawing, the present invention is described in more detail.
[0020] As shown in the accompanying drawings, a variable capacitance aluminum alloy surface corrosion monitoring sensor includes an insulating cover 11 with a top opening 17 on the top surface. The insulating cover 11 is a square groove with one wall missing, and the insulating covers 11 are nested in sequence. There are a sensor upper layer, a sensor middle layer and a sensor lower layer. The sensor upper layer is composed of a first insulating dielectric plate 1 and a first corroded aluminum alloy layer 2 affixed thereon. There is a first lead wire 7 leading out from the first corroded aluminum alloy layer 2. An insulating dielectric plate 1 is provided with a drilling area 18 in the center, and the middle layer of the sensor is composed of a second insulating dielectric plate 3 and a second corroded aluminum alloy layer 4 affixed to it. The second corroded aluminum all...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| relative permittivity | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a variable-capacitance sensor for monitoring surface corrosion of an aluminum alloy, comprising an insulating outer cover with an opening at the top end, wherein the sensor is internally divided into upper, middle and lower three layers; each layer of the sensor is composed of an insulating medium plate and a corroded aluminum alloy layer which is adhered to the insulating medium plate; a lead wire is leaded out from the corroded aluminum alloy layer and the lead wire respectively passes through holes on an insulating plate. The manufacturing method of the variable-capacitance sensor comprises the following steps of: firstly, manufacturing the insulating medium plate and drilling a region at the center of the insulating medium plate; and then manufacturing the corroded aluminum alloy layer to lead the lead wire out of the corroded aluminum alloy layer to be assembled; sealing each gap of the sensor by silicon rubber; and obtaining an area with corrosion losses by the change of the capacitance according to a working principle of a variable area type capacitance sensor. The sensor provided by the invention has the advantages of simple structure, convenience for installation, high reliability; and according to the sensor, the real-time online monitoring on the surface of an aluminum alloy material is realized, and the requirements on monitoring and evaluating the aluminum alloy corrosion are met.
Description
technical field [0001] The invention relates to the technical field of metal material corrosion detection, in particular to a variable capacitance aluminum alloy surface corrosion monitoring sensor and a manufacturing method thereof. Background technique [0002] Aluminum alloy has excellent mechanical properties, it is easy to process, high durability, light weight, widely used in machinery manufacturing and aviation industry. Aluminum alloy is the main material of aircraft trusses and girders, but in long-term use, the surface of aluminum alloy will be damaged, and these damaged parts will be exposed to the environment, causing corrosion on the surface of aluminum alloy. In the early stage of corrosion, the surface of the aluminum alloy changes from silvery white to dull gray, losing its metallic luster. As the corrosion intensifies, pitting pits will appear on the surface of the aluminum alloy. These corrosion pits will develop along the horizontal and vertical directions...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/22G01N27/04
Inventor 刘马宝李云超刘启达王献辉李腾
Owner XI AN JIAOTONG UNIV