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Sensor fixing device of acoustic emission test

A technology for fixing devices and sensors, which is applied in the direction of measuring devices, material analysis using acoustic emission technology, instruments, etc., can solve the problem of affecting the normal progress of uniaxial compression acoustic emission tests, inaccurate spatial position fixation of sensors, increasing specimen loss and Time-consuming test and other problems, to achieve the effect of simple structure, accuracy assurance, and easy replacement

Inactive Publication Date: 2017-10-20
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no special device for fixing acoustic emission sensors on the surface of cubic specimens such as geotechnical materials. Traditional acoustic emission sensors are fixed by coating the surface of the sensor with vaseline and then fixed with rubber bands. This method has the spatial position of the sensor. Inaccurate, the sensor is easy to fall off during the test, and the acoustic emission sensor needs to be repeatedly disassembled and assembled. In this case, it not only increases the loss of the specimen and the time-consuming test, but also affects the performance of the uniaxial compression acoustic emission test. Work properly

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  • Sensor fixing device of acoustic emission test
  • Sensor fixing device of acoustic emission test
  • Sensor fixing device of acoustic emission test

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Embodiment Construction

[0023] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0024] Such as figure 1 As shown, a sensor fixing device for acoustic emission test of the present invention includes a fixing mechanism 1 of the sensor body, a socket bracket 3 , a socket rigid bracket 4 , and a solid rigid bracket 5 . Such as figure 1 , figure 2 , image 3 As shown, the fixing mechanism 1 of the sensor body is used to adjust and fix the sensor, and the mechanism is arranged inside the hollow cylindrical shell 12; the fixing mechanism of the sensor body is inserted into a slot bracket provided with a half-shaped slot 31 through a plugboard 11 3; the sensor body 2 is put into the mechanism by the sensor cover 14, the limit spring 15, and the limit plate 16 is fixed to it, and the sensor wire is protruded from the bar-shaped gap 17; The sensor body is closely combined with the test piece 6. Such as figure 1 , Image 6 As shown, two s...

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Abstract

The invention discloses a sensor fixing device for an acoustic emission test, which comprises a fixing mechanism of a sensor body, a slot bracket, a socket rigid bracket and a solid rigid bracket. The fixing mechanism of the sensor body is used to install the sensor, including a cylindrical shell, a plugboard, a pressure spring, a sensor cover, a limit spring, and a limit plate. There are two slot brackets arranged symmetrically, and each slot bracket contains a slot for supporting the fixing mechanism of the sensor body. The socket rigid support is hollow, which is convenient for inserting the solid rigid support with the alveolar surface. Three bolt holes are uniformly arranged on one side of the socket rigid support, and the solid rigid support is fixed by bolts. The invention has a simple structure, is easy to install and disassemble, can be used repeatedly, and can adjust the position of the sensor to meet the simultaneous use of multiple sensors, thereby enhancing the flexibility of sensor detection and improving the accuracy of the acoustic emission test.

Description

technical field [0001] The invention relates to a fixing device for an acoustic emission sensor, in particular to a fixing device for an acoustic emission sensor suitable for uniaxial compression acoustic emission testing of cube specimens of rock, concrete, cement soil, coal and other materials. Background technique [0002] Acoustic emission monitoring technology has been widely used in the field of geotechnical engineering to monitor the damage evolution process of materials. When performing uniaxial compression acoustic emission tests on rock-soil materials in the laboratory, the acoustic emission sensor is required to be in close contact with the rock-soil test piece and be able to be fixed on the surface of the test piece. At present, there is no special device for fixing acoustic emission sensors on the surface of cubic specimens such as geotechnical materials. Traditional acoustic emission sensors are fixed by coating the surface of the sensor with vaseline and then ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/14G01N29/26
CPCG01N29/14G01N29/26
Inventor 孙振国李明宝陈冲
Owner NORTHEAST FORESTRY UNIVERSITY
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