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A modulus-matched two-dimensional plane strain field test sensing element and its manufacturing method

A two-dimensional plane, sensing element technology, applied in the direction of electromagnetic measuring devices, electric/magnetic solid deformation measurement, etc., can solve the problems of limited use range, achieve high sensitivity, ensure test accuracy and strain test range, and simple structure Effect

Inactive Publication Date: 2018-06-05
ZHEJIANG GONGSHANG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the material of the polyimide base, this strain gauge is more suitable for strain testing of materials with a larger modulus, which limits its application range and cannot effectively measure plastics, rubber and other materials with a smaller modulus. Strain testing of materials such as soil

Method used

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  • A modulus-matched two-dimensional plane strain field test sensing element and its manufacturing method
  • A modulus-matched two-dimensional plane strain field test sensing element and its manufacturing method
  • A modulus-matched two-dimensional plane strain field test sensing element and its manufacturing method

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Effect test

Embodiment 1

[0028] Embodiment 1: as figure 1 As shown, a modulus-matched two-dimensional plane strain field test sensing element of the present invention is composed of a thin plate 1 of the first layer, a sensitive element array 2 of the second layer, a lateral electrode 3, and an insulating thin film of the third layer. Layer 4, the longitudinal electrode 5 of the fourth layer and the insulating protective film 6 of the fifth layer. The object to be subjected to the strain test is a concrete structure, and an epoxy resin sheet with a smaller elastic modulus is selected as the sheet 1 of the first layer, and the thickness of the sheet 1 is selected as 0.3mm. The sensitive element display 2 on the second layer uses epoxy resin as a matrix and conductive carbon black as a filling material to prepare a conductive polymer composite material, and then prints it on the thin plate 1; before printing, the upper surface of the thin plate 1 is scrubbed clean with a solvent, Guaranteed printing ef...

Embodiment 2

[0030] Embodiment 2: as figure 1As shown, a modulus-matched two-dimensional plane strain field test sensing element of the present invention is composed of a thin plate 1 of the first layer, a sensitive element array 2 of the second layer, a lateral electrode 3, and an insulating thin film of the third layer. Layer 4, the longitudinal electrode 5 of the fourth layer and the insulating protective film 6 of the fifth layer. The object to be subjected to the strain test is a rock structure, and an epoxy resin sheet with a smaller elastic modulus is selected as the first layer of the sheet 1, and the thickness of the sheet 1 is selected to be 0.2mm. Sensitive element display 2 on the second layer, epoxy resin is used as the matrix, conductive carbon nanotubes are used as the filling material, and the conductive polymer composite material is prepared, and then printed on the thin plate 1; before printing, the upper surface of the thin plate 1 is wiped clean with a solvent , to ens...

Embodiment 3

[0032] Embodiment 3: as figure 1 As shown, a modulus-matched two-dimensional plane strain field test sensing element of the present invention is composed of a thin plate 1 of the first layer, a sensitive element array 2 of the second layer, a lateral electrode 3, and an insulating thin film of the third layer. Layer 4, the longitudinal electrode 5 of the fourth layer and the insulating protective film 6 of the fifth layer. The object of the strain test is the soil structure, and the silicon rubber sheet with a smaller elastic modulus is selected as the first layer of sheet 1, and the thickness of the sheet 1 is selected as 0.1mm. The sensitive element display 2 on the second layer uses silicone rubber as the matrix and conductive carbon black as the filling material to prepare a conductive polymer composite material, which is then printed on the thin plate 1; before printing, the upper surface of the thin plate 1 is scrubbed clean with a solvent to ensure D. The horizontal e...

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Abstract

A modulus matching two-dimensional plane strain field test sensing element and the manufacturing method thereof relate to sensing elements and manufacturing method thereof. The modulus matching two-dimensional plane strain field test sensing element comprises a first thin plate layer, a second sensing element display and lateral electrode layer, a third insulating thin layer, a fourth vertical electrode layer and a fifth insulation and protection film layer, wherein the first thin plate layer is a plastic or rubber thin plate, the second sensing element display and lateral electrode layer is printed on the first thin plate layer through a printing means, the third insulating thin layer is printed with resin or rubber, the fourth vertical electrode layer is also formed through printing, and the fifth insulation and protection film layer is printed with resin or rubber. The sensing element can be used for better testing a two-dimensional plane strain field, and reaches synchronous strain with an object to be tested, the strain obtained through test is more accurate, and the strain test range is satisfactory. The test precision is improved. Since printing technology is employed in the method, the cost is low and the effect is good for mass production.

Description

technical field [0001] The invention relates to a sensing element and a manufacturing method thereof, in particular to a modulus-matched two-dimensional plane strain field testing sensing element and a manufacturing method thereof. Background technique [0002] At present, the methods used for two-dimensional plane strain field mainly include contact measurement method and non-contact measurement method. Among them, the contact measurement method mainly uses multi-point resistive strain gauges for testing. This method has limited layout and large strain gauge size. In addition, each strain gauge has to be connected to the test line, which takes up a lot of space and affects the test accuracy; the representative non-contact measurement method is the digital image method, which can only be used in uniaxial and transparent pressure chambers (hydraulic oil) Applicable under certain conditions, the test mechanism itself limits the scope of application of this method. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16
Inventor 廖波周国庆季雨坤常传源赵晓东周檀君
Owner ZHEJIANG GONGSHANG UNIVERSITY
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