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

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, in particular to a high-definition ultrasonic imaging nondestructive testing method for weld seams. 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 a further development of ultrasonic testin...

AI Technical Summary

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; there is no precedent for the combination of precision mechanical scanning device and micro-scanning imaging

However, devices capable of micro-scanning and ultrasonic imaging equipment capable of obtaining higher resolution generally use complex processing techniques and are expensive

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