计算数字聚焦光圈法重建图像的 DGS 曲线

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Russian Journal of Nondestructive Testing Pub Date : 2024-08-23 DOI:10.1134/S1061830924700645
A. E. Bazulin, E. G. Bazulin, A. Kh. Vopilkin, S. A. Kokolev, S. V. Romashkin, D. S. Tikhonov
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引用次数: 0

摘要

摘要 将天线阵列广泛引入超声波测试实践,使得利用相控阵技术或数字聚焦孔径(DFA)技术获得反射体图像成为可能。然而,目前在核电工程、石油化工、天然气生产等行业进行超声波无损检测的许多规范性文件都要求确定反射体的等效尺寸。本文提出了一种计算 DAF-DGS 阵列的方法,用于在分析图像时确定等效平底孔 (FBH) 的直径。结果表明,不使用图像的振幅,而使用积分振幅会更有效。数值实验表明,确定 FBH 直径的精确度为 \( \pm 0.1\) mm。在模型实验中,确定 FBH 直径的精度绝对值优于 0.2 毫米。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Calculating the DGS Curve for Images Reconstructed by Digital Focusing of Aperture Method

The widespread introduction of antenna arrays into the practice of ultrasonic testing has made it possible to obtain images of reflectors using either phased array technology or digital focusing of aperture (DFA) technology. However, many current regulatory documents governing the rules for conducting ultrasonic nondestructive testing in nuclear power engineering, petrochemistry, gas production industry, etc. require determining the equivalent dimensions of reflectors. The present article proposes a method for calculating the DAF-DGS array to determine the diameter of an equivalent flat-bottomed hole (FBH) when analyzing an image. It is shown that it is more efficient to work not with the amplitude of the image, but with the integral amplitude. Numerical experiments have shown the accuracy of the order of \( \pm 0.1\) mm in determining the FBH diameter. In model experiments, the accuracy of determining the FBH diameter was better than 0.2 mm in absolute value.

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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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