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Calibration block for ultrasonic phased array sector scanning and method for manufacturing and using the same

A technology of ultrasonic phase control and manufacturing method, which is applied in the direction of material analysis, instruments, and measuring devices using sonic/ultrasonic/infrasonic waves.

Active Publication Date: 2021-08-03
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the constant propagation velocity measured by the calibration test block for metallic materials cannot be directly applied to composite materials

Method used

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  • Calibration block for ultrasonic phased array sector scanning and method for manufacturing and using the same
  • Calibration block for ultrasonic phased array sector scanning and method for manufacturing and using the same
  • Calibration block for ultrasonic phased array sector scanning and method for manufacturing and using the same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment proposes a calibration block for ultrasonic phased array sector scanning, which is used to verify the applicability of composite materials with different structures and thicknesses in ultrasonic phased array sector scanning, such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 12 , Figure 13 As shown, the calibration block 1 is a plate-shaped structure with a semicircular arc-shaped end 2 at one end, and five flat-bottomed holes are arranged radially on the semi-circular arc-shaped surface of the semi-circular arc-shaped end 2 with an angle of 90° 3. The flat-bottomed holes 3 are set at 15° intervals around the center of the semi-arc-shaped end 2 at positions of 15°, 30°, 45°, 60° and 75° on the semi-arc-shaped surface and form a line Arranged radially.

[0038] In order to better realize the present invention, further, the calibration block 1 includes 200 composite material prepregs with a thickness of 0.125mm, and the length and width of t...

Embodiment 2

[0045] This embodiment proposes a method for manufacturing a calibration block for ultrasonic phased array sector scanning, which is used to manufacture the above-mentioned calibration block for ultrasonic phased array sector scanning, such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 12 , Figure 13 The specific operation of the manufacturing method shown is as follows: select 200 sheets of composite material prepregs with a size of 100mm×100mm×0.125mm, and sequentially adopt laying, assembly, and autoclave forming and curing to generate 100mm×100mm×25mm prepregs. Test block; then cut the test block of 100mm×100mm×25mm to obtain a test block of 80mm×80mm×25mm, and then mill one end of the test block of 80mm×80mm×25mm, and prepare the arc surface The special program and the calling program generate a semicircular arc-shaped end 2 with a radius of 25 mm; finally, at intervals of 15° on the semi-circular arc-shaped end 2, with the center of the semi-circular arc-...

Embodiment 3

[0052] This embodiment proposes a method for using a calibration block for ultrasonic phased array sector scanning, using a phased array probe 4 to carry out a phased array experiment on the calibration block 1, and in a specific experiment, place the phased array probe 4 The position corresponding to the center of the circle of the semicircular arc-shaped end 2 and the circle centers of the five flat-bottomed holes 3 on the calibration block 1 .

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Abstract

The invention proposes a calibration block for ultrasonic phased array sector scanning and its manufacturing and use method. By designing and manufacturing the calibration block for composite material ultrasonic phased array sector scanning, it is used for ultrasonic phased array sector scanning to correct different structures, Applicability verification of composite materials with different thicknesses, measuring the incident point of the probe, measuring the deflection angle of the probe, measuring the sound wave propagation velocity, determining the ultrasonic waveform, and adjusting the baseline ratio of the ultrasonic display, so as to realize the precise positioning and quantification of defects, and effectively improve the ultrasonic phase. Accuracy, repeatability and comparability of detection results of array sector scanning. In the present invention, the design of the calibration block is the key point, while the arc surface and the flat-bottomed hole are the difficult points in the manufacture of the calibration test block.

Description

technical field [0001] The invention belongs to the technical field of nondestructive testing, and in particular relates to a calibration block for ultrasonic phased array sector scanning and a method for manufacturing and using it. Background technique [0002] The metal material is composed of crystal grains, the grains are arranged irregularly in the spatial orientation, the overall performance of the metal material is isotropic, and the ultrasonic propagation speed is constant; while the composite material is a heterogeneous mixed phase structure, the internal structure complex structure. The fiber filaments are soaked and dried in the resin to form a prepreg fiber cloth. The prepreg is cut, layered and cured to form a composite material. The anisotropy of the composite material is significant. - Refraction and wave mode conversion may occur at the resin heterogeneous interface, which makes the propagation characteristics more complicated, and the ultrasonic wave shows ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/30
CPCG01N29/30
Inventor 吴晓红张武明杨扬袁信满林文钦岳诚郭君王亚琴虞永杰王邦凯尹松松
Owner CHENGDU AIRCRAFT INDUSTRY GROUP