Three-dimensional reconstruction method for internal defect of alloy firmware

A technology of 3D reconstruction and internal defects, which is applied in the direction of optical testing flaws/defects, etc., and can solve problems such as inability to simulate 3D expansion processes

Inactive Publication Date: 2012-06-06
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
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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 for the internal defects of the alloy firmware proposed by the invention is based on the infrared non-destructive testing technology, and takes heat transfer theory into consideration. Through non-destructive testing technology, the internal defects of the alloy firmware are non-destructively tested to determine the location range of the defects. At the same time, the depth information of the defects can be determined by combining the heat transfer theory, so as to realize the three-dimensional reconstruction of the internal defects and realize the intuitive use of the current working conditions of the firmware. 3D simulation. The alloy firmware in this embodiment is an aeroengine blade as an example.

[0044] The inventive method such as figure 1 shown, including the following steps:

[0045] 1) Generate infrared images using non-destructive testing equipment

[0046] In this embodiment, the test piece is actively heated b...

Embodiment 2

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

[0062] Generate infrared images using non-destructive testing equipment;

[0063] In the infrared image, the defects inside the alloy firmware are non-destructively detected by non-destructive testing technology, and the position range and color difference information of the defects are determined;

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

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

[0066] Determining the position range of defects and color difference information and determining the depth information of ...

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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 non-destructive testing technology, in particular to a three-dimensional reconstruction method for internal defects of an 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 automatic testing. It has been widely used in the detection of aero-engine blade defects abroad. It means that after the blade is heated, the defects inside the blade change the thermal performance of the blade itself, and energy accumulation will be formed at the defect, resulting in changes 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 test...

Claims

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Application Information

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Patent Type & Authority Applications(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
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