Method for quickly measuring wall thickness of annular section based on industrial CT

A measurement method and cross-section technology, applied in image data processing, instruments, calculations, etc., can solve the problem of not being able to obtain the maximum and minimum wall thickness of the rotary cavity components, and achieve slow calculation speed, fast operation calculation speed, and large memory Effect

Pending Publication Date: 2020-04-03
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a rapid measurement method for the wall thickness of the circular section based on industrial CT, to s

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  • Method for quickly measuring wall thickness of annular section based on industrial CT
  • Method for quickly measuring wall thickness of annular section based on industrial CT
  • Method for quickly measuring wall thickness of annular section based on industrial CT

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Embodiment 1

[0038] A specific embodiment of the present invention, such as Figure 1-Figure 5 As shown, a method for quickly measuring the thickness of an annular section based on industrial CT is disclosed. The steps include: Step 1: Obtain the annular section of the rotary cavity member, and divide the image area; Step 2: Determine the thickness of the annular section Coordinates of the center of the circle; Step 3: Calculate the maximum radius R of the circular section max , draw a virtual circle; Step 4: Calculate the pixel distance of any point in the virtual circle, and calculate the actual wall thickness of any point.

[0039] Compared with the prior art, in this embodiment, the industrial CT cross-sectional image of the position to be measured of the revolving cavity member is acquired by industrial CT imaging equipment, and the maximum and minimum values ​​of the wall thickness of the ring member are calculated according to the industrial CT cross-sectional image. Under the prem...

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Abstract

The invention relates to a method for quickly measuring wall thickness of an annular section based on an industrial CT, belongs to the technical field of nondestructive testing, and solves the problemthat the maximum value and the minimum value of the wall thickness of a rotary cavity component cannot be obtained in the wall thickness measurement process of the rotary cavity component in the prior art. The measuring method comprises the following steps: 1, acquiring the circular ring section of the rotary cavity component, and dividing an image area; 2, determining circle center coordinates of the circular ring section; 3, calculating the maximum radius Rmax of the circular ring section, and drawing a virtual circle; and 4, calculating the pixel distance of any point in the virtual circle, and calculating the actual wall thickness of any point. The circular ring section of the position to be measured is obtained through the industrial CT imaging equipment, the circle center coordinates of the circular ring section are obtained through the two chord lines, the maximum value and the minimum value of the wall thickness of the rotary cavity component are obtained on the premise that it is guaranteed that the measured component is not damaged, the principle is simple, the calculated amount is small, and the operation calculation speed is high.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to a method for rapidly measuring the wall thickness of an annular section based on industrial CT. Background technique [0002] For some products with a revolving cavity structure (through hole or closed), conventional dimensional measurement methods such as calipers, laser scanning or contact three-coordinates cannot effectively measure their wall thickness, and non-destructive testing methods are required for wall thickness measurement. Common non-destructive measurement methods for wall thickness include ultrasonic method, X-ray method, infrared thermal imaging method and industrial CT method. For cavity components with uneven density or large attenuation, because there are many pores inside, the attenuation is large when the ultrasonic wave penetrates the wall thickness, and the reflected echo signal cannot be effectively collected to achieve wall thickness meas...

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Application Information

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IPC IPC(8): G06T7/60G06T7/70G06T7/12G06T7/136
CPCG06T7/60G06T7/70G06T7/12G06T7/136G06T2207/10081G06T2207/30108
Inventor 江柏红高晓进周金帅高增华张昊于士章
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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