Automatic defect recognition method and system for magnetic particle testing

A magnetic particle detection and automatic recognition technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of monotonous repetition of work content, no fusion of magnetic particle detection technology, slow detection speed, etc., to improve workpiece recognition. effect on rate and discriminant accuracy

Inactive Publication Date: 2014-08-13
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology

However, most of the currently used magnetic particle flaw detection equipment has always used the test results to identify and judge the presence or absence of parts defects by using the method of manual observation of the magnetized parts by the on-site operators.
This process has the following disadvantages: slow detection speed, low work efficiency, monotonous and repetitive work content for operators, resulting in high missed detection rate; strong ultraviolet light at the work site of fluorescent magnetic particle flaw detection is easy to cause comparisons for long-time workers serious bodily injury; and detrimenta...

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  • Automatic defect recognition method and system for magnetic particle testing
  • Automatic defect recognition method and system for magnetic particle testing
  • Automatic defect recognition method and system for magnetic particle testing

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[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] In the following description, references to "one embodiment," "an embodiment," "an example," "example," etc. indicate that such described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitations, but not every embodiment or example necessarily includes the specific feature, structure, characteristic, property, element or limitation. Additionally, repeated use of the phrase "according to one embodiment of the present application" does not necessarily refer to the same embodiment, although it may.

[0035] For simplicity, some technical features known to those skilled in the art are omitted from the following description.

[0036] The invention provides a method for aut...

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Abstract

The invention discloses an automatic defect recognition method for magnetic particle testing. Whether a workpiece has defects or not is recognized by conducting image collecting, image preprocessing, image characteristic extraction, detect recognition and the like on the workpiece to be tested. The invention further discloses an automatic defect recognition system for magnetic particle testing. According to the automatic defect recognition technical scheme for magnetic particle testing, images are collected, discrimination of material types, the machining technique, magnetic particle detection process characteristics and other background knowledge of the workpiece and the rich experience of magnetic particle inspection personnel are combined, and thus the recognition rate and the discrimination accuracy of the workpiece are improved.

Description

technical field [0001] The invention belongs to the field of magnetic particle detection of non-destructive flaw detection, and in particular relates to a method and system for automatically identifying defects in magnetic particle detection. Background technique [0002] Magnetic particle testing is one of the five conventional methods of non-destructive testing. It is the most widely used and mature method in the detection of surface defects of ferromagnetic materials. Magnetic particle testing technology has a history of more than 80 years since its birth. With the continuous improvement and maturity of magnetization technology and the rapid popularization and use of computers, the application technology of magnetic particle flaw detection has also been continuously developed and improved, and the detection sensitivity and accuracy have been significantly improved. However, most of the magnetic particle flaw detection equipment currently in use has always used the test re...

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Application Information

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IPC IPC(8): G06K9/60G06K9/62
Inventor 张华李远江陆鹏张静刘满禄史晋芳刘桂华梁峰
Owner SOUTHWEAT UNIV OF SCI & TECH
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