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Porosity test block screening method, device and equipment and storage medium

A screening method and porosity technology, applied in image data processing, instruments, calculations, etc., can solve problems such as large error in results, difficult implementation, and large volume, and achieve the effect of reducing workload and improving production efficiency.

Active Publication Date: 2020-06-12
SHANGHAI AIRCRAFT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above existing technical solutions, it is difficult to manufacture porosity test blocks through process parameter control, and the result error will be large
However, if it is based on ultrasonic imaging detection technology, due to the large demand for porosity test blocks in the daily production process, and the volume of porosity test blocks is generally large, the porosity test blocks are evaluated by calculating the porosity. The process is complicated, which increases the workload of screening and reduces the production efficiency of porosity test blocks

Method used

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  • Porosity test block screening method, device and equipment and storage medium
  • Porosity test block screening method, device and equipment and storage medium
  • Porosity test block screening method, device and equipment and storage medium

Examples

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Embodiment 1

[0027] figure 1 It is a flowchart of a porosity test block screening method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of screening porosity test blocks on a test plate. To execute, the device may be implemented in software and / or hardware. Specifically include the following steps:

[0028] S110. Acquire a first target detection image of the first target detection area on the test board, and calculate a grayscale average value of the first target detection image.

[0029] Wherein, the test plate refers to the carrier for porosity test block screening. If the porosity test block is directly manufactured according to the process, due to the imperfection of the process principle and theory, the randomness of human operation and other factors during the production process, it is easy to cause the porosity test block to have process defects and not meet the requirements. actual production standards. Therefore, it is necessa...

Embodiment 2

[0054] figure 2 It is a flow chart of a porosity test block screening method provided in Embodiment 2 of the present invention. The technical solution of this embodiment is further refined on the basis of the above embodiments. Optionally, the acquisition of the reference detection image of the test plate by using digital radiography detection technology includes: obtaining an initial detection image of the test plate, and determining the unmarked area of ​​the test plate according to the initial detection image ; Obtain a reference detection image of the unmarked area of ​​the test plate by using digital radiography detection technology.

[0055] The specific implementation steps of the embodiment of the present invention include:

[0056] S210. Acquire an initial detection image of the test board, and determine an unmarked area of ​​the test board according to the initial detection image.

[0057] In one embodiment, optionally, the technical methods for obtaining the init...

Embodiment 3

[0069] Figure 4 It is a schematic diagram of a porosity test block screening device provided in Embodiment 3 of the present invention. This embodiment can be applied to the situation of screening porosity test blocks on the test plate, and the device can be realized by means of software and / or hardware. The screening device for the porosity test block includes: a first target detection image acquisition module 310 , a uniformity coefficient determination module 320 and a first porosity test block determination module 330 .

[0070] Wherein, the first target detection image acquisition module 310 is used to acquire the first target detection image of the first target detection area on the test board, and calculate the gray level average value of the first target detection image;

[0071] A uniformity coefficient determining module 320, configured to determine the uniformity coefficient of the first target detection area according to the average gray value;

[0072] The first...

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Abstract

The embodiment of the invention discloses a porosity test block screening method, device and equipment and a storage medium. The method comprises the following steps: acquiring a first target detection image of a first target detection area on a test board, and calculating a gray average value of the first target detection image; determining a uniformity coefficient of the first target detection area according to the gray average value; and if the uniformity coefficient meets a preset standard, taking the first target detection area as a first porosity test block. According to the embodiment of the invention, the uniformity coefficient of the first target detection image on the test plate is calculated, and the first porosity test block is determined according to the standard of the uniformity coefficient, so that the problem that the algorithm for calculating the porosity is complex is solved, the workload of the screening process is reduced, and the production efficiency of the porosity test block is further improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of non-destructive testing of aviation composite material parts, and in particular to a screening method, device, equipment and storage medium for porosity test blocks. Background technique [0002] With the development of composite material manufacturing technology, it has become an important development trend in the aviation field to adopt a large number of advanced composite materials in large passenger aircraft. Pores are inevitable defects in the manufacturing process of carbon fiber composites, and the mechanical properties of composites are very sensitive to pores. In order to ensure the safety of passenger aircraft, porosity testing is an important branch in the field of non-destructive testing of aircraft. The key technology to realize porosity testing is to screen out a series of porosity test blocks on the prepared test plate. Among them, the porosity Rate test blocks in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00
CPCG06T7/0004G06T2207/10116G06T2207/10132G06T5/90Y02E30/30
Inventor 肖鹏刘奎南方陈健周晖
Owner SHANGHAI AIRCRAFT MFG
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