Sound emission probe precise positioning device of rock uniaxial test and use method

Abstract

The invention discloses a sound emission probe precise positioning device of a rock uniaxial test and a use method. The device comprises an annular dial plate with a positioning hole and an annular nonius track, a nonius with a threaded hole and a set screw, a probe containing cap with a screw rod, and a scale bar; the nonius determines an orientation according to the annular dial plate; the annular dial plate is connected with the positioning hole by the scale bar; the scale bar has the effects of connecting and determining the position of the dial plate; one end, pointing to the inner side of the annular dial plate, of the screw rod is connected with the probe containing cap, and a sound emission probe is fixed by a spring (screw); during mounting, the screw rod is adjusted to increase frictional force between the probe and a rock test piece, and the probe and the positioning device are mounted on the surface of the rock test piece by using the frictional force. The device is flexible and convenient, and can perform sound emission probe precise positioning and fixing on rock test pieces with different shapes and sizes, meanwhile, the number and mounting orientation of the probe can be selected, and the time and vigor of researchers are effectively saved.

Description

technical field [0001] The invention relates to an acoustic emission probe positioning device, in particular to an adjustable acoustic emission probe positioning device which is easy to install and use, has low manufacturing cost and is used for rock uniaxial compression experiments. Background technique [0002] As my country's mineral resources become increasingly scarce, more and more mines are transferred to deep underground mining. While deep mining has brought us resources, it has also brought us many problems. Researchers need to further understand the mechanical properties of rock compression failure and crack evolution characteristics. [0003] During the failure process of rock materials, the internal damage of the material gradually accumulates, accompanied by elastic-plastic deformation, crack initiation and expansion, etc. These energy release processes generate high-frequency acoustic emission signals. Therefore, acoustic emission monitoring provides researcher...

AI Technical Summary

Problems solved by technology

In experiments, researchers generally use existing positioning devices to fix AE probes on the surface of rock specimens, but most of these current devices cannot be adjusted, and sometimes cannot meet the needs of researchers; some researchers use glue , Adhesive tape to fix the acoustic emission probe on the surface of the rock specimen, but this is time-consuming and laborious, and affects the accuracy of the collected signal results, and may even cause the probe to loosen and fall to the ground, causing the probe to break, causing unnecessary economic losses

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