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Structure defect ultrasonic on-line intelligent identifying system and identifying method

A technology for intelligent identification and structural defects, applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, special data processing applications, instruments, etc., can solve the problem of no crack depth quantitative detection equipment, etc., achieve good market promotion value and low investment cost. , the effect of improving the accuracy

Inactive Publication Date: 2006-03-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, research institutions at home and abroad have done a lot of research on applying signal processing and artificial neural network methods to ultrasonic testing, but most of the testing results are qualitative identification of defect types, and there is no equipment for quantitative detection of crack depth.

Method used

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  • Structure defect ultrasonic on-line intelligent identifying system and identifying method
  • Structure defect ultrasonic on-line intelligent identifying system and identifying method
  • Structure defect ultrasonic on-line intelligent identifying system and identifying method

Examples

Experimental program
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Effect test

Embodiment

[0030] Such as figure 1 As shown, the ultrasonic online intelligent identification system for structural defects includes an ultrasonic flaw detector, a high-speed data acquisition card, and a computer. , the high-speed data acquisition card is connected with the synchronous circuit through the gate control circuit, and connected with the probe through the broadband amplifier. There is also a logic control circuit connected between the gate control circuit and the microprocessor of the computer. The microprocessor has a built-in wavelet analysis module connected to each other, Artificial neural network module.

[0031] The transducer is used to convert high-frequency electrical oscillation energy into sound energy through mechanical vibration through the reverse piezoelectric effect.

[0032] The gate control circuit is mainly used to select the defect echo signal and exclude the emission signal and the bottom echo signal.

[0033] The logic control circuit is mainly used to...

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PUM

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Abstract

This invention provides a super acoustic online intelligent system for detecting structure defect, which contains super acoustic defect detector comprising synchronous circuit, emission circuit, probe with transducer and receiving circuit, high speed data sampling card connected with synchronous circuit by gate control circuit, and computer, wherein the the logic control circuit connected with gate control circuit and micro processor of computer, the micro processor having each other connected wavelet analysis module and artificial neural network.

Description

technical field [0001] The invention relates to an ultrasonic nondestructive testing system, in particular to an ultrasonic online intelligent identification system and identification method for structural defects. Background technique [0002] With the development of modern industry, non-destructive testing technology and its application have become more and more important. Various defects may occur in metal parts during material smelting and processing. For bearing parts, especially parts with high temperature, high pressure and high speed, internal defects may lead to major personal accidents and serious losses. In these accidents, welding defects are one of the most important factors. [0003] Due to the great harm of crack-type defects in welded structures, the accurate quantification of their depth is particularly important in the assessment of structural integrity. Ultrasonic nondestructive testing technology is widely used in the measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/11G06F19/00
CPCG01N2291/0289
Inventor 陈国华何湘铂张新梅谢常欢
Owner SOUTH CHINA UNIV OF TECH
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