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A Method for Determining Standard Parameters of Low Exposure Levels in Radiographic Direct Digital Imaging

A technology of digital imaging and standard parameters, which is applied in the field of infrastructure construction, can solve problems such as inaccurate setting of detection process parameters, achieve the effects of reducing detection exposure, improving safety, improving DR detection quality and detection work efficiency

Active Publication Date: 2022-05-17
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology

[0008] The present invention provides a method for determining standard parameters of low-exposure level for direct digital imaging detection of rays, so as to solve the non-standard process parameter determination method and DR system process parameter calibration method for solving engineering DR detection existing in the prior art, and the setting of detection process parameters is not correct. Accuracy and other defects

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  • A Method for Determining Standard Parameters of Low Exposure Levels in Radiographic Direct Digital Imaging

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 and figure 2 As shown, the present invention provides a method for determining standard parameters of low-exposure level in direct digital imaging of rays, including:

[0037] Step S1, preparing a plurality of test calibration blocks with different thicknesses, each calibration block is provided with a weld seam in the middle; wherein, the minimum processing quantity of the calibration block N=the maximum transillumination thickness T / 3 is taken as an integer, and the minimum thickness of the calibration block is generally The thickness difference between adjacent calibration blocks is 2-3mm, and the length and width of each calibration block are 300×300mm.

[0038] Step S2. Select a digital detector and a high-frequency constant-voltage directional X-ray machine as the detection equipment. According to actual needs, a digit...

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Abstract

The invention relates to the technical field of infrastructure construction, in particular to a method for determining standard parameters of low-exposure level for ray direct digital imaging detection. The method includes: processing and manufacturing process test calibration blocks, selecting testing equipment and materials, preparing for X-ray machine work, setting detection transillumination methods, setting DR detection systems, arranging detection marks and image quality meters, process parameter tests, and generating standard process parameter diagrams . The method for determining the standard parameters of low-exposure level for ray direct digital imaging detection provided by the present invention can quickly and accurately search or calculate the standard process parameters for DR detection of weld seams with various thicknesses by generating a continuous fitting diagram of DR low-exposure level standard process parameters. Effectively improve the quality and efficiency of DR inspection, reduce the amount of inspection exposure, and improve the safety of ray operations.

Description

technical field [0001] The invention relates to the technical field of infrastructure construction, in particular to a method for determining standard parameters of low-exposure level for ray direct digital imaging detection. Background technique [0002] In recent years, ray direct digital imaging detection technology (DR) has been applied in the detection industry. The detection process parameters are an important factor in determining the quality of detection. There are welds with various transillumination thicknesses in the project. It is still necessary to determine the applicable standard process parameters. There are great technical difficulties, the main reasons are: [0003] (1) At present, there is still a lack of research results and standards for determining the standard process parameters of DR testing. There is no effective method to follow. On-site testing and construction can only be determined by empirical data or on-site filming tests. The process parameter...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/04
CPCG01N23/04G01N2223/03G01N2223/1016G01N2223/3037
Inventor 陈剑刘家发单忠斌董利苹赵洪元
Owner BC P INC CHINA NAT PETROLEUM CORP