An image quality meter and a method for judging the quality of radiographic detection using the image quality meter

Abstract

The invention relates to an image quality meter and a method for judging the quality of radiation detection using the image quality meter, comprising a base plate and a spatial resolution detection area and a plate thickness resolution detection area arranged on the base plate; the spatial resolution detection area The zone is composed of a plurality of regular elongated material blocks of different widths arranged side by side; the plate thickness resolution detection zone is a long ladder-shaped material block with steps of different heights. The present invention abandons the method of manually observing the film of the image quality meter, and instead performs automatic judgment based on the image processing method, so that the judgment is more objective. The image quality meter adopts regular graphics, which simplifies the difficulty of image processing and improves reliability. The image quality meter has a spatial resolution detection area and a plate thickness resolution detection area, which can simultaneously measure the spatial resolution and plate thickness responsivity of radiographic detection.

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...

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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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