Welding seam film defect identification method and system

A defect identification and negative film technology, which is applied in the direction of using radiation for material analysis, etc., to achieve the effect of improving the recognition accuracy

Inactive Publication Date: 2019-01-01
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for identifying defects in welded seam film that overcomes the lack of accuracy in amplitude and direction, and

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  • Welding seam film defect identification method and system
  • Welding seam film defect identification method and system
  • Welding seam film defect identification method and system

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0033] In the description of this specification, descriptions referring to the terms "an embodiment", "a specific embodiment", "for example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in this application. In at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics descri...

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Abstract

The invention provides a welding seam film defect identification method and system. The method comprises the following steps: acquiring a welding seam film of a welding seam through a ray imaging technology; acquiring welding seam image texture characteristic data of the welding seam film by utilizing an image identification technology; establishing an identification model according to the weldingseam image texture characteristic data and a defect type of the welding seam film through a machine learning algorithm; acquiring welding seam image texture characteristic data of a welding seam filmto be detected; calculating a defect type of the welding seam film to be detected according to the welding seam image texture characteristic data of the welding seam film to be detected and the identification model. Therefore, the problem that the texture precision and the characteristic judgment of welding film welding are not accurate is effectively solved, the image edge detection and defect tracking and identification precision of a welding film is greatly improved and a foundation is laid for the development of a welding seam characteristic identification technology.

Description

technical field [0001] The invention relates to the field of safety detection of oil and gas pipelines, in particular to a method and system for identifying defects of weld film negatives. Background technique [0002] As a basic process of connecting components, welding plays an important role in the production and daily maintenance of my country's industrial field. Due to various defects in welding construction, affected by the stability of various parameters in the welding process, various defects such as slag inclusions, cracks, and pores will inevitably appear in the weld seam. In order to ensure the quality of welded components, there are Detailed detection and reasonable evaluation of weld defects are necessary. Conventional non-destructive testing methods mainly include ultrasonic testing and X-ray testing. The X-ray detection method provides reliable guidance for subsequent welding work due to its high sensitivity, intuitive reliability, and good repeatability, so...

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Application Information

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IPC IPC(8): G01N23/18
CPCG01N23/18
Inventor 董绍华谢书懿孙玄张河苇张来斌
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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