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Micro strain gauge for triaxial instrument strain measurement and manufacturing method thereof

A strain measurement and triaxial instrument technology, applied in the field of strain gauges, can solve problems such as large error and lack of availability, and achieve the effects of improving measurement accuracy and making the production method feasible.

Inactive Publication Date: 2010-10-20
CENT SOUTH UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this device has a disadvantage that the accuracy of its measurement results is only 0.1mm. In the usual triaxial shear test, the small deformation of the test instrument will affect the measurement of axial deformation. Larger errors will occur, and the effect required by the experiment cannot be obtained.

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  • Micro strain gauge for triaxial instrument strain measurement and manufacturing method thereof
  • Micro strain gauge for triaxial instrument strain measurement and manufacturing method thereof
  • Micro strain gauge for triaxial instrument strain measurement and manufacturing method thereof

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0047] see Figure 13 , Figure 14 and Figure 15, the first strain gauge 1, the second strain gauge 2 and the first terminal 6 are pasted on one side of the bronze strip 5, the first strain gauge 1 and the second strain gauge 2 are electrically connected with the first terminal 6, and the bronze strip The other side of 5 is pasted with the third strain gauge 3, the fourth strain gauge 4 and the second terminal 7, the third strain gauge 3 and the fourth strain gauge 4 are electrically connected with the second terminal 7, the first terminal 6 and the second terminal 7 are electrically connected to the signal amplifier through a wire 8, and the bronze strip 5, the first strain gauge 1, the second strain gauge 2, the first terminal 6, the third strain gauge 3, the fourth strain gauge 4 and The second terminal 7 is covered with silicone 9 .

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Abstract

The invention discloses a micro strain gauge for triaxial instrument strain measurement and a manufacturing method thereof. A first strain sheet (1), a second strain sheet (2) and a first connector lug (6) are stuck to one side of a bronze strip (5); the first strain sheet (1) and the second strain sheet (2) are electrically connected with the connector lug (6); a third strain sheet (3), a fourth strain sheet (4) and a second connector lug (7) are stuck to the other side of the bronze strip (5); the third strain sheet (3) and the fourth strain sheet (4) are electrically connected with the second connector lug (7); the first connector lug (6) and the second connector lug (7) are electrically connected with a signal amplifier through leads (8); and silicone (9) is covered on the bronze strip (5), the first strain sheet (1), the second strain sheet (2), the first connector lug (6), the third strain sheet (3), the fourth strain sheet (4) and the second connector lug (7). The outward bending strain of the middle part of a sample is measured by using the micro strain gauge directly stuck to the lateral surface of the sample, the measurement precision can be greatly improved, and the manufacturing method thereof is feasible.

Description

technical field [0001] The invention relates to a triaxial tester, in particular to a strain gauge of the triaxial tester, and also relates to a manufacturing method of the strain gauge. Background technique [0002] The triaxial compression test of soil is a relatively complete indoor test method for measuring the shear strength of soil. At present, most domestic triaxial test devices are strain-controlled triaxial testers, and its research has been relatively mature. However, this device has a disadvantage that the accuracy of its measurement results is only 0.1mm. In the usual triaxial shear test, the small deformation of the test instrument will affect the measurement of axial deformation. For the more demanding triaxial test Larger errors will be generated, and the effect required by the experiment cannot be obtained. This is a problem that needs to be solved urgently. Contents of the invention [0003] The first technical problem to be solved by the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16G01N3/24
Inventor 李建中师岩哲何玉荣
Owner CENT SOUTH UNIV
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