Ultrasonic automatic detection device for laser welding T-shaped welding seam defects and quantification method

An automatic detection device and laser welding technology, applied in the aerospace field, can solve the problems of low detection efficiency, insufficient detection accuracy, insufficient sensitivity, etc., and achieve the effects of high quantitative detection accuracy, improved detection efficiency, and improved detection accuracy.

Pending Publication Date: 2021-11-05
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0003] Aiming at the problems of insufficient detection accuracy, insufficient sensitivity, and low detection efficiency in the prior art, the present invention provides an ultrasonic automatic detection device for laser welding T-shaped weld defects and a quantitative method thereof, and realizes do

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  • Ultrasonic automatic detection device for laser welding T-shaped welding seam defects and quantification method
  • Ultrasonic automatic detection device for laser welding T-shaped welding seam defects and quantification method
  • Ultrasonic automatic detection device for laser welding T-shaped welding seam defects and quantification method

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[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0045] Such as figure 1 As shown, an ultrasonic automatic scanning detection device for laser welding T-shaped weld defects, the device consists of a base 7, a two-dimensional motion table 1, a height adjustment seat 2, a special ultrasonic probe set 3, a laser calibration component 4, and a detection table 5 , water spray assembly 6 constitutes;

[0046] The two-dimensional motion table 1 is installed on the base 7, through the two-dimensional motion table 1, the positions of the special ultrasonic probe group 3 and the laser calibration assembly 4 relative to the welding seam can be adjusted from the X-axis direction, and the special ultrasonic probe group 3 and the laser The calibration component 4 performs a scanning movement along the extending di...

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Abstract

The invention discloses an ultrasonic automatic detection device for laser welding T-shaped weld defects and a quantification method. The device comprises a base, a two-dimensional motion table, a height adjusting seat, a special ultrasonic probe group, a laser calibration assembly, a detection table and a water spraying assembly. The two-dimensional motion platform is installed on the base and used for carrying the special ultrasonic probe group and the laser calibration assembly, and the positions of the special ultrasonic probe group and the laser calibration assembly can be adjusted in the X direction and the Y direction through the two-dimensional motion platform; the detection table is fixedly arranged on the base and is used for placing a detected workpiece; and the water spraying assembly supplies water to the special ultrasonic probe group. The quantitative detection method comprises the following steps of: drawing an amplitude-size curve based on a reference block; performing scanning detection; and evaluating a detection signal. According to the device and method, multi-probe-group automatic detection is adopted, the detection efficiency is greatly improved through designed probe arrangement mode and laser marking, and the detection precision of internal defects of a welding seam is improved through high-frequency ultrasonic detection.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to an ultrasonic automatic detection device for laser welding T-shaped weld defects and a quantitative method thereof. Background technique [0002] High-performance titanium alloy double-beam laser welding T-shaped weld is an important aircraft panel structure. Its advantages of high strength, low cost and light weight have been verified in the manufacture of large aircraft such as Airbus, and it has become a development trend in the field of aviation manufacturing in recent years. focus. The double-beam laser welding technology of high-performance titanium alloy is sensitive to the influence of welding parameters, and the microstructure and mechanical properties of welded joints are easily affected by welding parameters. What's more serious is the lack of welding standards and quality judgment basis for double-beam laser welding seams of titanium alloys, especially the lack of...

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Application Information

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IPC IPC(8): G01N29/04G01N29/22G01N29/265G01N29/30
CPCG01N29/04G01N29/22G01N29/265G01N29/30G01N2291/0234Y02E30/30
Inventor 陈振华陈伟兵卢今卢超
Owner NANCHANG HANGKONG UNIVERSITY
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