Piezoelectric ceramic tube-based cylindrical intelligent aggregate device
A piezoelectric ceramic tube and intelligent aggregate technology, applied in electromagnetic measuring devices, measuring devices, material analysis by electromagnetic means, etc., can solve the problem of difficult to judge the development degree of structural damage, time-consuming and labor-intensive special structural detection, radial damage detection Difficulties and other problems, to achieve the effect of broad promotion market and application prospects, simple production and installation process, and simple structure
Inactive Publication Date: 2017-02-22
DALIAN UNIV OF TECH
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Problems solved by technology
[0004] For traditional concrete components, due to the large volume of concrete, the damage generally occurs inside, and its radial damage detection is relatively difficult. It is difficult to judge whether the structure has suffered damage and the extent of damage during construction and service. It is time-consuming and labor-intensive, and it is also dangerous for the detection of some special structures
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[0016] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.
[0017] The invention provides a cylindrical intelligent aggregate device based on piezoelectric ceramic tubes, the specific implementation is as follows:
[0018] First, wires 6 are welded on the positive and negative electrodes of the piezoelectric ceramic tube 1 , and the transmission and reception of signals are carried out through the wires 6 . Then brush a layer of waterproof and anti-electricity adhesive protective layer 2 on the inside and outside of the piezoelectric ceramic tube 1. After the waterproof and anti-electrical adhesive protective layer 2 is completely cured, coat a layer of epoxy resin protection on the outside of the waterproof and anti-electrical adhesive protective layer 2. Layer 3, after the epoxy resin protective layer 3 is completely solidified, pour cement or marble filler into t...
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The invention relates to a piezoelectric ceramic tube-based cylindrical intelligent aggregate device and belongs to the civil engineering concrete component structure health monitoring field. Concrete structures are affected by external environment during construction and service processes, and as a result, the structures will be damaged to different degrees, as for a pure concrete columnar component, tiny cracks and damage will occur on the interior and surface of the pure concrete columnar component, and as for a concrete filled steel tube, concrete will be peeled from a steel tube to different degrees. As for the radial damage of this type of columnar structure, based on a characteristic that concrete cracks and the peeling of concrete from a steel tube may affect a wave transfer path, and the energy of received waves will be decreased, active, passive and impedance methods are utilized to infer the states of the concrete and the concrete filled steel tube structure through the change of received signal energy and spectra; and simple and feasible method can be provided for the damage and peeling monitoring of the concrete or the concrete filled steel tube based on the piezoelectric ceramic tube-based cylindrical intelligent aggregate device.
Description
technical field [0001] The invention is mainly used in the field of structural health monitoring of civil engineering concrete (especially cylindrical) components. Specifically, due to the impact of the external environment on the concrete structure during construction and service, the structure will be damaged to varying degrees. For columnar components, various microcrack damages will occur inside and on the surface. For concrete filled steel tubes, there are various degrees of peeling between concrete and steel tubes. The present invention mainly aims at the radial damage of this type of columnar structure, utilizes the characteristics that the existence of concrete cracks and steel tube concrete peeling will affect the wave transmission path, and weakens the energy of the received wave, and utilizes active, passive and impedance methods to receive The detected signal energy and spectrum changes can conversely infer the state of the concrete or CFST structure. This cylindr...
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IPC IPC(8): G01B7/16G01N27/20G01N1/28
CPCG01B7/16G01N1/28G01N27/205
Inventor 霍林生陈冬冬宋钢兵
Owner DALIAN UNIV OF TECH
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