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Strain gauge based on magnetorheological elastomer

A magnetorheological elastomer and strain gauge technology, applied in the field of strain gauges, can solve the problems of narrow application range, complicated manufacturing process, and easy damage.

Active Publication Date: 2014-09-10
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing strain gauges usually use a sensitive grid as a component for measuring strain. The sensitive grid has poor temperature and humidity resistance and is easily corroded by impurities. Even after packaging, it still cannot completely solve the problem of anti-corrosion. Use, the application range is narrow, the structure is fine, easy to damage, the production process is complicated, and it is not easy to maintain
The diameter of the resistance wire used in the sensitive grid is all above 20 um due to the influence of the existing process, so the measurement accuracy is low

Method used

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Embodiment Construction

[0016] see figure 1 , is an embodiment of a strain gauge based on a magnetorheological elastomer, including an upper insulating film 1 and a lower insulating film 3. In this embodiment, both the upper insulating film 1 and the lower insulating film 3 are polymer films, Both the upper insulating film 1 and the lower insulating film 3 have a thickness of 15-25 um, and in this embodiment, the upper insulating film 1 and the lower insulating film 3 both have a thickness of 20 um. The lower surface of the upper insulating film 1 is pasted and fixed with an upper electrode sheet 2, and the upper lead wire 6a is welded and fixed on the upper electrode sheet 2. The welding point of the upper lead wire 6a is located between the upper electrode sheet 2 and the upper insulating film 1, and the sealing performance is good. Prevents interference with magnetorheological elastomers. The upper surface of the lower insulating film 3 is pasted and fixed with the lower electrode sheet 4, the lo...

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Abstract

The invention discloses a strain gauge based on a magnetorheological elastomer. The strain gauge comprises an upper insulation film and a lower insulation film. An upper electrode plate is fixedly arranged on the lower surface of the upper insulation film in an attaching mode. A fixing upper lead is welded to the upper electrode plate, and a lower electrode plate is fixedly arranged on the upper surface of the lower insulation film in an attaching mode. The lower electrode plate and the upper electrode plate correspond, a fixing lower lead is welded to the lower electrode plate, and the magnetorheological elastomer which is in a flake shape is arranged between the upper electrode plate and the lower electrode plate. The upper end face and the lower end face of the magnetorheological elastomer are fixed with the upper electrode plate and the lower electrode plate respectively in an attaching mode. Pre-structured soft magnetic particles in the magnetorheological elastomer form a plurality of soft magnetic particle chains, and the axes of all the soft magnetic particle chains are all perpendicular to the upper end face and the lower end face of the magnetorheological elastomer. The strain gauge based on the magnetorheological elastomer is high in precision and wide in application range.

Description

technical field [0001] The invention relates to the field of strain gauges, in particular to a strain gauge based on a magneto-rheological elastic body. Background technique [0002] Existing strain gauges usually use a sensitive grid as a component for measuring strain. The sensitive grid has poor temperature and humidity resistance and is easily corroded by impurities. Even after packaging, it still cannot completely solve the problem of anti-corrosion. The application range is narrow, the structure is fine, easy to damage, the production process is complicated, and it is not easy to maintain. The diameter of the resistance wire used in the sensitive grid is all above 20 um due to the influence of the existing technology, so the measurement accuracy is low. Contents of the invention [0003] The purpose of the present invention is to provide a strain gauge based on a magneto-rheological elastomer to address the deficiencies of the prior art. The strain gauge has high pr...

Claims

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Application Information

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IPC IPC(8): G01B7/16
Inventor 居本祥张登友杨百炼唐锐
Owner CHONGQING MATERIALS RES INST
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