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Three-dimensional reconstruction method for internal defect of alloy firmware

A technology of 3D reconstruction and internal defects, applied in the direction of optical testing flaws/defects, etc., can solve the problem of inability to simulate the process of 3D expansion

Inactive Publication Date: 2014-04-09
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the deficiencies in the prior art that infrared non-destructive testing cannot display the three-dimensional image of the defect, and cannot simulate the three-dimensional expansion process of the defect, the technical problem to be solved by the present invention is to provide a three-dimensional image of the internal defect of the alloy firmware. Three-dimensional reconstruction method for internal defects of alloy firmware for reconstruction and completion of three-dimensional simulation of defects

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  • Three-dimensional reconstruction method for internal defect of alloy firmware
  • Three-dimensional reconstruction method for internal defect of alloy firmware
  • Three-dimensional reconstruction method for internal defect of alloy firmware

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Embodiment 1

[0043] The three-dimensional reconstruction method of the internal defects of the alloy firmware proposed by the present invention is based on the infrared non-destructive detection technology, and takes into account the heat transfer theory. Non-destructive testing is performed on the internal defects of the alloy firmware through non-destructive testing technology to determine the location range of the defects. At the same time, combined with the theory of heat transfer, the depth information of the defects can be determined, so as to realize the three-dimensional reconstruction of the internal defects and realize the intuitive use of the firmware. Three-dimensional simulation. The alloy firmware in this embodiment takes an aero engine blade as an example.

[0044] The method of the present invention is as figure 1 As shown, including the following steps:

[0045] 1) Use non-destructive testing equipment to generate infrared images

[0046] In this embodiment, a high-energy flash...

Embodiment 2

[0061] The difference of this embodiment 1 is that: this step 2) and step 3) of embodiment 1 are executed in parallel, such as figure 2 As shown, the details are as follows:

[0062] Use non-destructive testing equipment to generate infrared images;

[0063] Perform non-destructive testing of defects in the alloy firmware through non-destructive testing technology in infrared images to determine the location range and color difference information of the defects;

[0064] Use the theory of heat transfer in the infrared image to perform one-dimensional heat transfer calculation on the image to determine the depth information of any defect point;

[0065] According to the position range and depth information of the defect, 3D reconstruction is completed through visualization technology to realize the 3D simulation of the defect.

[0066] Determining the position range and color difference information of the defect and determining the depth information of any defect point are performed sim...

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Abstract

The invention relates to a three dimensional reconstruction method for internal defect of an alloy firmware, which comprises the following steps: using a nondestructive test device to generate an infrared image; in the infrared image, carrying out nondestructive test on the internal defect of the alloy firmware by a nondestructive test technology, determining the position scope of the defect and the color difference information; according to the defect position scope, determining the depth information of a random defect point by combining a heat transfer theory; according to the defect position scope and the depth information, completing the three-dimensional reconstruction through a visualization technology for realizing the three-dimensional simulation of the defect. According to the invention, the three-dimensional simulation is carried out for the internal defect of the alloy firmware, thereby the three-dimensional image of the internal defect can be presented in a visual and effective mode. The internal defect condition of the alloy firmware can be detected by the method, the firmware can not be damaged, the technicians can conveniently observe the three-dimensional image of the internal defect of the firmware from multi-direction and multi-level aspects. The method of the invention has important reality meaning and research value.

Description

Technical field [0001] The invention relates to an infrared nondestructive detection technology, in particular to a three-dimensional reconstruction method for internal defects of alloy firmware. Background technique [0002] Infrared non-destructive testing technology is a new method that has developed rapidly in the field of non-destructive testing in recent years. This technology has the characteristics of non-contact, fast, intuitive, and automated testing. It has been widely used in the detection of aircraft engine blade defects abroad. It is that after heating the blade, the defects inside the blade change the thermal performance of the blade itself, which will form an accumulation of energy at the defect, resulting in a change in the temperature field of the blade surface. Through image processing technology to process and analyze the temperature map of the blade surface, the position of the defect can be determined, so as to achieve the purpose of non-destructive testing....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/88
Inventor 赵大威赵怀慈郝明国赵春阳周雷
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI