Graphene rubber strain test device and rock strain measurement method

A strain testing and graphene technology, applied in the field of graphene rubber strain testing devices, can solve problems such as error, easy falling off, failure, etc., and achieve the effects of preventing direct contact, good electrical conductivity, and good ductility

CN109974572AActive Publication Date: 2019-07-05SHAOXING UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-07-05

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Abstract

The invention provides a graphene rubber strain test device and a rock strain measurement method. The graphene rubber strain test device is used for measuring strain of a rock test block, and comprises a graphene rubber strain gauge, a data collector and a display which are connected in sequence, wherein the graphene rubber strain gauge comprises a graphene rubber strip, the graphene rubber stripis formed by mixing graphene and elastic rubber, and two ends of the graphene rubber strip are connected with the data collector through lead wires respectively. The graphene rubber strip made by mixing the graphene and the elastic rubber has good electrical conductivity, the graphene rubber strip is hooped on the rock test block, the graphene rubber strip is deformed synchronously when the rock test block is slightly deformed by a force, and the deformation of an object can be sensed sensitively. When the graphene rubber strip is deformed, the resistivity inevitably changes, and the strain ofthe rock test block can be precisely converted and obtained through measuring variation of resistivity of the graphene rubber strip during the deformation process.
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Description

technical field

[0001] The invention relates to the technical field of rock strain measurement, in particular to a graphene rubber strain test device and a rock strain measurement method. Background technique

[0002] At present, the instruments for measuring strain on the market are mainly strain gauges and extensometers. The principle of the strain gauge is to stick the strain gauge on the rock test block, so that it expands and contracts with the strain of the rock test block, so that the metal foil inside will elongate or shorten with the strain, and many metals are mechanically elongated. Or shorten its resistance will change accordingly. However, the strain gauge is a single-point measurement, which can only measure the local strain of the rock test block, and some small strains cannot be measured, and the operation of the strain gauge is inconvenient, and there will be certain errors. The extensometer is difficult to install, and it is easy to fall off during the ex...

Examples

Embodiment Construction

[0033] Embodiments of the present invention provide a graphene rubber strain testing device and a rock strain measuring method, such as Figure 1-6 As shown, it is used to measure the radial strain and axial strain of the rock test block 1, including a graphene rubber strain gauge 2, a data collector 3, and a display 4 connected in sequence.

[0034] The graphene rubber strain gauge 2 includes a graphene rubber strip 21, and the graphene rubber strip 21 is formed by mixing graphene and elastic rubber. Graphene is mixed into rubber with good elasticity, and the rubber is natural rubber, so that when the graphene rubber strip 21 is deformed, the graphene content on the cross section of the graphene rubber strip 21 changes, and the amount of current passing through also changes, and the change of its resistance is measured rate, to achieve the purpose of measuring the strain of the object conveniently and quickly.

[0035] like image 3 As shown, the two ends of the graphene ru...