High-resolution welding seam supersonic image-forming damage-free detection method and detection system

A technology of ultrasonic imaging and non-destructive testing, which is applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, etc. It can solve problems such as high cost, no precedent for combining precision mechanical scanning devices and micro-scanning imaging, complex processing techniques, etc., to improve performance , to achieve computer reproduction, to achieve the effect of a simple principle

Inactive Publication Date: 2008-01-09
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] Judging from the current research status, the super-resolution reconstruction of sequence images and ultrasound imaging technology are independent of each other, and there is no precedent for combining the two; There is no precedent for the combination of the former; t...

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  • High-resolution welding seam supersonic image-forming damage-free detection method and detection system
  • High-resolution welding seam supersonic image-forming damage-free detection method and detection system
  • High-resolution welding seam supersonic image-forming damage-free detection method and detection system

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Embodiment Construction

[0026] Hereinafter, preferred embodiments of the present invention will be described in detail in conjunction with the drawings.

[0027] Fig. 1 shows a working flow chart of a high-definition ultrasonic imaging nondestructive testing method for weld seams, which will be described in three parts in conjunction with the accompanying drawings, namely: ultrasonic imaging inspection of weld seams, micro-scanning and super-resolution reconstruction As well as the Scanning Device and Imaging Software section.

[0028] 1. Weld seam ultrasonic imaging detection part

[0029]As shown in Fig. 2, the hardware structure of the welding seam ultrasonic imaging detection system of the present invention, the welding seam workpiece 1 is associated with the data acquisition system 6 through the probe 2, and the data acquisition system 6 passes through the ultrasonic transmitting / receiving system 4 and the scanning device (three-dimensional precision scanning) device) 3, wherein the data acquis...

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Abstract

The invention discloses a high clear weld ultrasound imaging undamaged detection method and detection system, firstly dong point by point scanning with leach focusing probe to welding seam, and sampling detecting signal of ultrasound reflect echo for every bit, composing the ultrasonic scanning image of welding line section, and then realizing to rebuild super-resolution of image by gathering tiny scanning image and multigraph rebuilding super-resolution image. The invention can breach resolution limited of existing equipment of ultrasound imaging, it improves greatly recognizability of equipment of ultrasound imaging for the small bug of welding line by multi-framing rebuilding high resolution and high quality image from fall quality image in the scene.

Description

technical field [0001] The invention relates to an ultrasonic imaging nondestructive testing method and a testing system, in particular to a high-definition ultrasonic imaging nondestructive testing method and a testing system of a weld seam. Background technique [0002] The weld is the weakest part of the welded structure, and about 70% of the accidents caused by the failure of the welded structure are caused by the failure of the weld. However, at present, the level of automatic welding in our country is low, and the on-line quality inspection methods for welded structures are especially lacking. Therefore, there is an urgent need for a non-destructive testing method that can automatically and quickly detect weld defects. Ultrasonic testing is currently recognized as one of the most effective conventional nondestructive testing methods in weld defect detection. In modern non-destructive testing technology, ultrasonic imaging technology is a remarkable new technology and ...

Claims

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Application Information

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IPC IPC(8): G01N29/06
Inventor 陈铁群戴光智薛家祥谢宝忠
Owner SOUTH CHINA UNIV OF TECH
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