Acoustic emission sensor fixation device for bridge cable health monitoring

Abstract

The invention discloses an acoustic emission sensor fixation device for bridge cable health monitoring. The device consists of a hollow cylinder, a hoop and an integration adjuster. An acoustic emission sensor is disposed in the hollow cylinder, two ends of the hoop are respectively fixed to the bottom outside surface of the hollow cylinder symmetrically, and the bottom of the integration adjusteris installed at the cavity top of the hollow cylinder. The acoustic emission sensor fixation device provided by the invention has the bottom designed into a curved surface, the acoustic emission sensor clings to a monitored curved surface, at the same time a waterproof material filling layer is designed, thus forcefully guaranteeing effective acquisition of acoustic emission signals and the bottom waterproof and dustproof requirements of the acoustic emission fixation device. The top is designed into a threaded fitting way, and is convenient for dismantling and replacing the acoustic emissionsensor. The bottom of the sensor integration adjuster combines elastic metal sheets with rubber, and can achieve uniform adjustment of the sensor pressure. The acoustic emission sensor fixation device provided by the invention not only provides a ring of magnet adsorption layer, but also is designed with the shockproof hoop, achieves dual fixation, and can prevent accidents.

Description

technical field [0001] The invention relates to the technical field of nondestructive health monitoring of civil engineering structures, in particular to an acoustic emission sensor fixing device for bridge cable health monitoring. Background technique [0002] As a new type of non-destructive monitoring technology, acoustic emission technology can monitor the real-time dynamic health of important structural components in civil engineering, and provide a basis for judging the damage state of structures. Among them, the reasonable installation of acoustic emission sensors is crucial to the effective acquisition of acoustic emission signals, which affects the assessment of structural health status. [0003] Bridge suspenders and cables are affected by factors such as rainwater and dust in the natural environment. It is pointed out in the "Technical Regulations for Underpinning of Buildings (Structures)" that these factors have adverse effects on the acquisition of acoustic emi...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an acoustic emission sensor fixing device for bridge cable health monitoring, which solves the problem that the existing acoustic emission sensor fixing device cannot be waterproof and dustproof in a complex outdoor environment, the contact surface of the cylindrical structure is poorly integrated, and the device is not easy to fix, etc. technical problem

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