Image quality indicator and radiographic testing quality judgment method applying same

A technology of ray detection and image quality meter, which is applied in the direction of material analysis using radiation, can solve the problems of irregular arrangement, inapplicability, poor objectivity, etc., and achieve the effect of improving reliability and simplifying the difficulty of image processing

Active Publication Date: 2015-10-28
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology

[0003] With the increasing number of products such as high-speed trains, the demand for quality inspection in the process of production, manufacturing and service is extremely urgent. At present, the judgment of radiographic inspection accuracy is generally based on manual observation, which has poor objectivity, and the image quality meter is generally of the wire type. , the arrangement is irregular, not suitable for image processing and recognition

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  • Image quality indicator and radiographic testing quality judgment method applying same

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0030] Such as figure 1 As shown, the image quality meter of the present invention is suitable for digital image processing for judging the accuracy of X-ray detection, including a base plate 1, a spatial resolution detection area arranged on the base plate 1, a plate thickness resolution detection area, and an image quality meter search area and pinpoint zones.

[0031] The image quality meter is made of the material of the workpiece to be tested in radiographic inspection, such as steel or aluminum.

[0032] The bottom plate 1 of the image quality meter is rectangular, and is used to carry the spatial resolution detection area, plate thickness resolution detection area, image quality meter search area and precise positioning area on it.

[0033] The spatial resolution detection area is used to determine the spatial resolution of the radiatio...

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Abstract

The invention relates to an image quality indicator and a radiographic testing quality judgment method applying the same. The image quality indicator comprises a base plate and a spatial resolution testing area and a plate thickness resolution testing area which are arranged on the base plate. The spatial resolution testing area is composed of a plurality of regular long-strip material blocks with different widths. The plate thickness resolution testing area is composed of a plurality of long-strip stepped-appearance material blocks with different heights. The way that an image quality indicator negative film is observed by people is abandoned and replaced with automatic judgment based on an image processing mode, and therefore judgment is more objective. The image quality indicator adopts regular graphics, the image processing difficulty is lowered, and reliability is improved. The image quality indicator is provided with the spatial resolution testing area and the plate thickness resolution testing area, thereby being capable of determining radiographic testing spatial resolution and plate thickness responsivity at the same time.

Description

technical field [0001] The invention relates to a judging method, in particular to an image quality meter and a radiographic quality judging method using the image quality meter. Background technique [0002] X-ray flaw detection technology is one of the main methods of non-destructive testing, and it is a necessary means to detect high-safety welds. X-ray flaw detection refers to the use of the ability of X-rays to penetrate metals, so that X-rays can penetrate the object to be inspected. The defect part and the base metal have different absorption capabilities for rays, and the air or non-metallic inclusions contained in the defect part have the ability to absorb rays. Lower, combined with the corresponding darkroom processing, so as to obtain the corresponding defect effect. [0003] With the increasing number of products such as high-speed trains, the demand for quality inspection in the process of production, manufacturing and service is extremely urgent. At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04
Inventor 路浩陶传琦迟建波王新
Owner CRRC QINGDAO SIFANG CO LTD
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