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Ultrasonic nondestructive detection characteristic imaging system based on LabVIEW

A feature imaging, non-destructive testing technology, applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, special data processing applications, instruments, etc., to achieve the effects of easy function upgrade, good data format compatibility, and powerful imaging functions

Inactive Publication Date: 2015-11-18
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the B and C imaging functions attached to commercial ultrasonic testing equipment are based on waveform amplitude imaging functions, which have great limitations in expressing ultrasonic propagation characteristics

Method used

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  • Ultrasonic nondestructive detection characteristic imaging system based on LabVIEW
  • Ultrasonic nondestructive detection characteristic imaging system based on LabVIEW
  • Ultrasonic nondestructive detection characteristic imaging system based on LabVIEW

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Experimental program
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the drawings.

[0024] figure 1 Shows the schematic diagram of the hardware components of the LabVIEW-based ultrasonic nondestructive testing characteristic imaging system. The industrial computer sends motion control commands to the motion controller's single-chip computer through the serial port, so that the stepper motor driver sends driving pulses to drive the stepper motor on the three-dimensional motion bracket to rotate , The stepping motor cooperates with the screw to make the ultrasonic sensor mounted on the sliding table perform C-scan motion. The ultrasonic pulse transmitter receiver excites and receives the ultrasonic detection signal through the ultrasonic sensor, and also provides the trigger signal of digital-analog conversion for the data acquisition card; the data acquisition card receives the detection signal according to the trigger signal sent by the pulse transmitter receiver and ...

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Abstract

The present invention relates to an ultrasonic nondestructive detection characteristic imaging system based on LabVIEW. The system comprises a hardware part and a software part, wherein the hardware part comprises an industrial personal computer, a high-speed data acquisition card, an ultrasonic pulse transmitting and receiving device and the like, and the software part comprises a synchronous control module, a movement control module, a waveform data acquisition module, a characteristic value calculation module and the like. With the system, the scanning signal A of the ultrasonic C type scanning process can be recorded, and the ultrasonic detection characteristic value can be automatically solved according to the scanning signal A; and the B type ultrasonic imaging and the C type ultrasonic imaging are performed according to the characteristic value, such that the defect shape, the defect size, the defect position, the material structure uniformity and other important non-destructive detection information can be intuitively displayed, and the chromatographic detection on the material defect and the non-uniformity can be achieved. According to the present invention, the system uses the modular construction way, has characteristics of simple structure, powerful imaging function, strong functional scalability and simple operation, and provides the powerful hardware and software system for the ultrasonic nondestructive detection of the material.

Description

technical field [0001] The invention belongs to the field of testing and measurement technology and instruments—ultrasonic nondestructive testing, and relates to a characteristic imaging system for ultrasonic nondestructive testing based on a LabVIEW development platform. Background technique [0002] Non-destructive testing refers to the detection of macro defects, the measurement of collective characteristics, the evaluation of chemical composition, organizational structure and mechanical properties of materials or parts or both in a way that does not damage their future use and reliability, and then Evaluate the suitability of a material or article for a particular application. [0003] The image display of ultrasonic nondestructive testing can directly display the shape and position of the internal defects of the object, provide intuitive and a large amount of information, and have the advantages of high reliability, high reproducibility, and accurate quantification. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06G06F17/50
Inventor 陈振华郭文光卢超张翀
Owner NANCHANG HANGKONG UNIVERSITY
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