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A Dynamic Damage Identification Method for Structural Sealant Without Reference Model

A damage identification and sealant technology, applied in the direction of analyzing materials, using sonic/ultrasonic/infrasonic waves to analyze solids, instruments, etc., to achieve the effects of easy operation, fast detection speed, and simple experimental installation

Active Publication Date: 2021-10-22
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic damage identification method for structural sealants without a reference model, to solve the defect in the prior art that an initial non-damaged reference model is required for damage detection, and the present invention does not require an initial non-damaged reference model Dynamic damage detection of structural sealants can be realized

Method used

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  • A Dynamic Damage Identification Method for Structural Sealant Without Reference Model
  • A Dynamic Damage Identification Method for Structural Sealant Without Reference Model
  • A Dynamic Damage Identification Method for Structural Sealant Without Reference Model

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] Embodiments of the present invention provide a dynamic damage identification method for structural sealants without a reference model, such as figure 1 As shown, the method includes the following steps:

[0036] Take the same kind of glass panel units to be tested as a set, and each glass panel unit in the set as a sample, use the same hammer test to measure the acceleration and hammer signal for each sample j, and calculate the acceleration frequency response function H j (ω k );

[0037] Calculate the sample acceleration frequency response function H j (ω k ) mode normalized frequency response function all in the set The average frequency response function of and calculate relative to The accumulative difference ...

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Abstract

The invention discloses a dynamic damage identification method for structural sealants without a benchmark model, which includes: measuring acceleration and hammer signals by using the same hammering experiment on similar glass panel units, calculating acceleration frequency response functions; and normalizing all samples Acceleration frequency response function, and calculate the average acceleration frequency response function, calculate the accumulative difference of the acceleration frequency response function of each sample; then calculate the upper limit of the one-sided confidence level of the accumulative difference of the acceleration frequency response function, and identify abnormal samples according to the upper limit of the one-sided confidence level; then The damage status of the glass panel unit is judged according to the peak frequency difference of the abnormal samples. The method of the invention can quickly identify individual units with damage to the structural sealant in similar glass panel units without an initial non-damage reference model, and has the advantages of simple experimental installation, easy operation, fast detection speed, and the like.

Description

technical field [0001] The invention relates to the technical field of glass curtain wall damage detection, in particular to a dynamic damage identification method for structural sealant without a reference model. Background technique [0002] Hidden frame and semi-hidden frame glass curtain wall are often used in various building envelopes due to their beautiful and simple appearance. Among them, the support device composed of structural sealant, rubber strip, etc. is a concealed project. Once damaged, the panel unit may fall off and cause a safety accident. [0003] In order to ensure the firmness of the installation of the glass panel unit in the curtain wall, it is necessary to regularly check its use status. Pan Danguang, Jiang Kun, Zhang Xichen, Wang Hongtao, Zheng Heng, and Hu Naidong disclosed a damage detection method for glass curtain wall structural sealant under a benchmark model in the patent "Damage Identification Method for Glass Curtain Wall Boundary Structu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04
CPCG01N29/04G01N2291/0232G01N2291/0235
Inventor 潘旦光江坤
Owner UNIV OF SCI & TECH BEIJING
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