ISO 32543-1:2024 无损检测 工业X射线系统中焦斑的特性 第1部分：针孔相机射线照相法

标准编号：ISO 32543-1:2024

中文名称：无损检测 工业X射线系统中焦斑的特性 第1部分：针孔相机射线照相法

英文名称：Non-destructive testing — Characteristics of focal spots in industrial X-ray systems — Part 1: Pinhole camera radiographic method

发布日期：2024-05

标准范围

本文件规定了一种测量大于0,1的有效焦斑尺寸的方法？毫米的X射线系统，不超过1？000千伏？通过针孔相机方法进行数字评估的X射线电压。用于此测量的电子管电压限制为200？kV用于目视胶片评价，可选择高于200？如果使用数字检测器，则为kV。X射线图像的成像质量和分辨率高度依赖于有效焦斑的特性，特别是从探测器平面看到的尺寸和二维强度分布。与EN 12543系列和ISO 32543系列中规定的其他方法相比，该方法允许获得焦斑的图像并查看其状态（例如阳极的凹坑）。本试验方法提供了测定工业X射线管标准（宏观焦斑）和微型焦斑的有效尺寸（尺寸）的说明。该确定基于焦斑图像的测量，该焦斑图像已经用“针孔”技术射线照相记录并用数字方法评估。对于商用X射线管类型的表征（即用于广告或贸易），附录？可以使用a。

This document specifies a method for the measurement of effective focal spot dimensions above 0,1 mm of X-ray systems up to and including 1 000 kV X-ray voltage by means of the pinhole camera method with digital evaluation. The tube voltage applied for this measurement is restricted to 200 kV for visual film evaluation and can be selected higher than 200 kV if digital detectors are used.

The imaging quality and the resolution of X-ray images depend highly on the characteristics of the effective focal spot, in particular the size and the two-dimensional intensity distribution as seen from the detector plane. Compared to the other methods specified in the EN 12543 series and the ISO 32543 series, this method allows to obtain an image of the focal spot and to see the state of it (e.g. cratering of the anode).

This test method provides instructions for determining the effective size (dimensions) of standard (macro focal spots) and mini focal spots of industrial X-ray tubes. This determination is based on the measurement of an image of a focal spot that has been radiographically recorded with a “pinhole” technique and evaluated with a digital method.

For the characterization of commercial X-ray tube types (i.e. for advertising or trade), the specific FS (focal spot) values of Annex A can be used.

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