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Flaw detection system and flaw detection method

A laser and optical path adjustment technology, which is applied in the field of flaw detection systems of ultrasonic technology, can solve problems such as the impact of flaw detection results, achieve intuitive and real-time flaw detection results, and improve flaw detection efficiency

Active Publication Date: 2012-10-24
XIAN JINBO TESTING INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem solved by the invention is that the flaw detection results of the existing ultrasonic flaw detection method are easily affected by the contact conditions between the probe and the flaw detection surface

Method used

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  • Flaw detection system and flaw detection method
  • Flaw detection system and flaw detection method
  • Flaw detection system and flaw detection method

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Embodiment approach

[0025] refer to figure 1 As shown, an embodiment of the flaw detection system of the present invention includes:

[0026] Laser 10, generating pulsed laser light;

[0027] The optical path adjustment device 20 adjusts the optical path of the laser light generated by the laser 10 to project the laser light onto the flaw detection surface of the workpiece, and performs laser scanning on the flaw detection surface;

[0028] The signal receiving device 30 captures the thermally excited ultrasonic signal generated by the laser scanning of the flaw-detected workpiece;

[0029] The imaging device 40 generates a dynamic waveform image based on the thermally excited ultrasonic signal received by the signal receiving device 30 .

[0030] In the embodiment of the above flaw detection system, the pulse laser generated by the laser 10 is used as the flaw detection signal source, and the pulse laser can change the projection position on the flaw detection surface through the optical path ...

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Abstract

The invention relates to a flaw detection system and a flaw detection method. The flaw detection system comprises a laser, a light path adjusting device, a signal receiving device and an imaging device, wherein the laser generates pulse laser; the light path adjusting device adjusts the light path of the laser generated by the laser so that the laser radiates to the flaw detection surface of a workpiece to carry out laser scanning on the flaw detection surface; the signal receiving device captures the thermal excitation ultrasonic signals of the detected workpiece generated by the laser scanning; and the imaging device generates dynamic waveform images based on the thermal excitation ultrasonic signal received by the signal receiving device. The flaw detection system and flaw detection method can carry out high-speed flaw detection on objects of any shapes, have higher flaw detection reliability, and can obtain visual and real-time flaw detection results.

Description

technical field [0001] The invention relates to the field of non-destructive flaw detection, in particular to a flaw detection system and a flaw detection method using ultrasonic technology. Background technique [0002] At present, in the process of industrial production and application, it has become a routine detection method to conduct non-destructive testing on workpieces to obtain internal defects of workpieces. Among them, ultrasonic flaw detection technology is a kind of non-destructive flaw detection technology widely used in the industry. [0003] The existing ultrasonic flaw detection technology simply uses an ultrasonic probe to generate ultrasonic waves to the flaw detection surface of the workpiece, and according to the ultrasonic waves, the internal defects of the workpiece are determined through the reflected echo or diffracted wave of the workpiece defect. According to the position of the ultrasonic probe relative to the flaw detection surface and the diffe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/06G01N29/34
CPCG01N2291/0289G01N29/2418
Inventor 王波刘小军
Owner XIAN JINBO TESTING INSTR