Sensor fixing test rack for uniaxial compression sound emission test of coal petrography and application method of same

Abstract

The invention discloses a sensor fixing test rack for a uniaxial compression sound emission test of coal petrography and an application method of the sensor fixing test rack. The test rack comprises a round rack in which a coal petrography sample is arranged, and three foot stools distributed at 120 degrees and used for fixing the round rack, wherein clinging devices used for fixing sound emission sensors in contact with the coal petrography sample are arranged on the round rack; the round rack comprises an upper round rack and a lower round rack which are respectively fixed with the upper parts and the lower parts of the three foot stools; the plurality of clinging devices are respectively fixed on the upper round rack and the lower round rack. When in use, the sensor fixing test rack is placed on a uniaxial compression tester; a coupling agent is uniformly applied on the surfaces of the signal acquisition ends of the sound emission sensors; after the sound emission sensors are mounted, the coal petrography sample is placed, and then the uniaxial compression sound emission test can be performed. The sensor fixing test rack solves the problems that at present, when the uniaxial compression sound emission test is performed in a laboratory, the spatial position of the sensors can not be fixed accurately, the sensors drop in the testing process, and high labor intensity is caused by repeated disassembly and assembly of the sensors.

Description

technical field [0001] The invention relates to a fixed sensor test frame and a use method thereof, in particular to a sensor fixed test frame suitable for coal rock uniaxial compression acoustic emission test and a use method thereof. Background technique [0002] When the laboratory conducts uniaxial compression acoustic emission tests on coal and rock materials, the acoustic emission sensor is required to be in close contact with the coal and rock samples and be able to be fixed on the surface of the samples. At present, there is no device specially used for fixing acoustic emission sensors on the surface of standard cylindrical samples such as coal and rock. The surface of the acoustic emission sensor is fixed by coating solid butter on the surface of the sensor, and then fixed with a rubber band. The problem of the sensor falling off during the process, and the acoustic emission sensor needs to be disassembled and assembled repeatedly, in this case, the loss of the samp...

AI Technical Summary

Problems solved by technology

At present, there is no device specially used for fixing acoustic emission sensors on the surface of standard cylindrical samples such as coal and rock. The surface of the acoustic emission sensor is fixed by coating solid butter on the surface of the sensor, and then fixed with a rubber band. During the process, the sensor falls off, and the acoustic emission sensor needs to be disassembled and assembled repeatedly. In this case, the sample loss and test time are increased, which affects the normal operation of the uniaxial compression acoustic emission test.

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