Ultrasonic scanning dynamic gate real-time tracking method for continuous variable-thickness workpiece and scanning method

A technology of variable thickness and gate, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and measuring devices. The effect of reliability and accurate detection

Active Publication Date: 2021-04-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] The embodiment of the present invention provides a method and scanning method for ultrasonic scanning of continuously variable thickness workpieces and real-time tracking of dynamic gates. This method can solve the problem of inaccurate and inaccurate measurement of continuous workpieces during ultrasonic scanning. The acquisition gate accurately obtains the internal echo information of the measured point, realizes the accurate detection of internal defects of the workpiece, and ensures the reliability of automatic ultrasonic scanning of the workpiece

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  • Ultrasonic scanning dynamic gate real-time tracking method for continuous variable-thickness workpiece and scanning method
  • Ultrasonic scanning dynamic gate real-time tracking method for continuous variable-thickness workpiece and scanning method
  • Ultrasonic scanning dynamic gate real-time tracking method for continuous variable-thickness workpiece and scanning method

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[0026] The words "first, second, third, etc." or similar terms such as module A, module B, and module C in the description and claims are only used to distinguish similar objects, and do not represent a specific ordering of objects. It can be understood that Obviously, where permitted, the specific order or sequence can be interchanged such that the embodiments of the application described herein can be practiced in other sequences than those illustrated or described herein.

[0027] In the following description, the involved reference numerals representing steps, such as S110, S120, etc., do not mean that this step must be executed, and the order of the previous and subsequent steps can be interchanged or executed simultaneously if allowed.

[0028] The term "comprising" used in the description and claims should not be interpreted as being restricted to what is listed thereafter; it does not exclude other elements or steps. Therefore, it should be interpreted as specifying th...

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Abstract

The invention provides an ultrasonic scanning dynamic gate real-time tracking method for a continuous variable-thickness workpiece. The real-time tracking method comprises the following steps: formulating a scanning track according to a measured workpiece; respectively setting starting time and gate width of an interface echo tracking gate, a bottom echo tracking gate and a data acquisition gate of an ultrasonic scanning device; when determining that the thickness of the measured point of the measured workpiece changes based on the scanning track of the measured workpiece, according to the sound time change of different measured points of the interface echo tracking gate and the sound time change of different measured points of the bottom echo tracking gate, updating the starting time of the bottom echo tracking gate, the starting time of the data acquisition gate and the gate width. The invention also provides an ultrasonic scanning method for the continuous variable-thickness workpiece, and the method comprises the steps: obtaining the position information of a measured point of a measured workpiece, obtaining the echo information collected by the data gate at the moment through the ultrasonic scanning device, and calculating the ultrasonic data according to the echo information.

Description

technical field [0001] The invention relates to the technical field of ultrasonic detection, in particular to a method for real-time tracking of a dynamic gate for ultrasonic scanning of continuously variable thickness workpieces and a scanning method. Background technique [0002] In recent years, automated ultrasonic testing technology has developed rapidly and has been widely used in aviation, aerospace, national defense and other fields. Non-contact ultrasonic pulse reflection method is often used in automatic ultrasonic testing, that is, the scanning device clamps the ultrasonic probe and emits pulse waves to the inside of the tested part, and collects the echo information between the interface and the bottom surface of the tested part through the data acquisition gate. Ultrasound scan imaging. In the case of continuous workpiece detection, such as aeroengine blades, hubs and other complex curved surface workpieces, the acoustic time between the ultrasonic interface wa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/265
Inventor 徐春广马朋志肖定国潘勤学杨博
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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