behalfBS EN 462-1-1994 中英文版 无损检测-射线底片质 第1部分：像质计 图象质量评估

2021年1月21日发(作者：removal)
EN462-1.1994
（翻译：宋广泽

公供参考）

EN462
Non-destructive

testing- Image quality of radiographs

无损检测

–

射线底片质量


Part: 1 Image quality indicators(wire type)
Determination of image quality value
第一部分：像质计

图象质量评估




范围

This part of this European Standard specifies a device and a method for the determination of the
image quality of radiographs. Other devices are the subject of parts 2 and 5 of the standard.

此欧洲标准的 这一部分指定了对射线照相图相质量的评定方法和程序，其他程序见标准
2
至
5
部分。

ive references

参考标准

This European Standard incorporates by dated or undated reference, provisions from other
normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of
these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies.

本欧洲标准由注明日期或未注明日期的参考，其他出版物的条 款合并编制而成。这些参考在
文本适当位置引用，所用出版物在此后列出。对于注明日期的引用文件，其 以后的修改或修订
内容只有在本标准进行修订或修改时才引用。对于未注明日期的引用文件，将引用其最 新版
本。

EN462-2 Non-destructive testing- Image quality of radiographs-part 2: Image quality indicators
(step/hole type),determination of image quality values
1)

EN462-2
无损探伤 ；射线照片的图像质量。第二部分：像质计（线型）；图像质量数值的测定

EN462-4 Non-destructive testing-Image quality of radiographs-part 4: Experimental evaluation of
image quality values and image quality tables
1)

EN462-4
无损探伤；射线照片的图像质量。第四部 分：图像质量数值和图像质量表的实验性评
估

EN462-5 Non- destructive testing-Image quality of radiographs- part 5: Image quality indicators
(Duplex wire type)
–
Determination of image unhappiness value
1)

EN462-1.1994
EN462-5
无 损探伤；射线照片的图像质量。图像质量指数（双芯导线类型），整体图像不清晰
度数值的测定

EN25580 Non-destructive testing
–
Industrial radiographic illuminators
–
Minimum requirements (ISO
5580:1985 )
EN25580
无损检测
-
工业射线照相
-
最低要求

EN45014 General criteria for suppliers, declaration of conformity
EN45014
供应方的通用标准

3. Definitions

定义

For the purposes of this standard, the following definitions apply:

本标准采用以下定义：

3.1 Image quality

图相质量

That characteristic of a radiographic image which determines the degree of detail which it shows.

判断射线图相显示详细程度的特征。

3.2 Image quality indicator (IQI)

像质计

A device comprising a series of elements of graded dimensions which enable a measure of the
image quality to be obtained. The elements of IQI are commonly wires or steps with holes.

一种包含一连串的元件和不同尺寸的能测量图像质量的设备，一般由金属线和孔洞组成。

3.2 Image quality value

图像质量值

A measure of the image quality required or achieved and is equal to the wire number given in table
1 for the thinnest wire which can be detected on the radiograph.

测量图像质量应达到相当于表
1
中给出的在射线照片中能发现的最小金属丝的编号。< br>
4 Specification for wire type image quality indicators

线型像质计的规范

4.1 Dimension, designation

尺寸及名称

Figure 1 represents a wire-type image quality indicator.

图
1
描绘了一个线型像质计










EN462-1.1994
Dimensions in millimeter
单位：
mm

a) Space for identification marking

各线之间距


Figure 1:
Image quality indicator (wire type)
图
1
：线型像质计


The IQI system is based on a series of 19 wires of different diameters which are specified in table
1 together with the relevant tolerances and the wire numbers. This series of wires has been subdivided
into four overlapping ranges of 7 consecutive wire numbers, viz. W1 to W7, W6 to W12, W10 to W16
and W13 to W19. The 7 wires in an IQI are arranged parallel to each other. The lengths of the wires, L
are10mm, 25mm or 50mm.

像质计体系由一组
19
根不同直径的金属丝组成 ，表
1
规定了相关的公差和线号。这一系列
像质计再细分为线号互相重叠的四组，每组 有
7
根相邻线号的金属丝组成。即
W1
到
W7
，
W 6
到
W12
，
W10
到
W16
和
W13
到
W19
，一个像质计中的
7
根金属丝相互平行，其长度
L
为
10mm
，
25mm
和
50mm
。

The written designation of an image quality indicator shall give the symbol IQI, the number of the
standard, the wire number of the thickest wire as specified in table 1 (e.g. W10), the symbol denoting
the wire material (e.g. FE) and the length (e.g. W25):
像质计的书面名称应给出像质计符号，标准号，最大金属丝的线号（按表
1
规定如
W10
），金属丝的材料（如
FE
）和线的长度（如
W25
）。