Acoustic emission sensor fixing device for concrete surface

Abstract

The invention discloses an acoustic emission sensor fixing device for a concrete surface. The acoustic emission sensor fixing device comprises a sensor fixing bracket, a spring, a sensor cover and a foot sleeve, wherein the foot sleeve is arranged at the lower end of the sensor fixing bracket and comprises a substrate, and a notch for placing an acoustic emission sensor is formed in the substrate; the spring is fixed on the lower surface at the upper side corresponding to the sensor fixing bracket; and the lower end of the spring is connected with the sensor cover. According to the fixing device, the actual problems of difficult firm fixing of an acoustic emission sensor on a concrete surface, difficult precise guarantee of a spatial position of the sensor, difficult disassembly and assembly, difficult guarantee of fixed pressure applied onto the acoustic emission sensor, difficult high-efficiency recycling, and the like at present are solved, and the acoustic emission sensor fixing device can be used for carrying out acoustic emission monitoring on concrete and rock quasi-brittle materials in laboratories and fixing an acoustic emission sensor in actual projects of concrete structures and the like.

Description

technical field [0001] The invention relates to a sensor fixing device, in particular to a fixing device for fixing an acoustic emission sensor on a concrete surface, which can be used for repeated acoustic emission monitoring of concrete and rock quasi-brittle materials in a laboratory, and in concrete structures Such as the need to fix the acoustic emission sensor in the actual project. Background technique [0002] In recent years, acoustic emission technology has been more and more used in the non-destructive testing of civil engineering structures. Since concrete is a brittle artificial stone, it is not very easy to place acoustic emission sensors on its surface, and the existing magnetic sensor supports used in pressure vessels and other fields are not suitable for setting on concrete and rocks. The surface of such materials, because concrete and steel are not used, magnetic materials cannot be adsorbed on it. In addition, in the acoustic emission monitoring test o...

AI Technical Summary

Problems solved by technology

Since concrete is a brittle artificial stone, it is not very easy to place acoustic emission sensors on its surface, and the existing magnetic sensor supports used in pressure vessels and other fields are not suitable for setting on concrete and rocks. The surface of such materials, because concrete and steel are not used, magnetic materials cannot be adsorbed on it

In addition, in the acoustic emission monitoring test of concrete material specimens in the laboratory, there is also the problem of fixing the acoustic emission sensor, because in such a situation it is necessary to repeatedly disassemble the acoustic emission sensor, and it is required to fix it each time The spatial position of the acoustic emission sensor and the magnitude of the fixed pressure meet the corresponding accuracy requirements

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