GB/T 23901.1-2019 English PDF (GBT23901.1-2019)

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GB/T 23901.1-2019: Non-destructive testing -- Image quality of radiographs -- Part 1: Determination of the image quality value using wire-type image quality indicators
GB/T 23901.1-2019
Non-destructive testing--Image quality of radiographs--Part 1. Determination of the image quality value using wire-type image quality indicators
ICS 19.100
J04
National Standards of People's Republic of China
Replace GB/T 23901.1-2009
Non-destructive testing radiographic inspection image quality
Part 1. Determination of image quality values of silk-type image quality
Part 1.Determinationoftheimagequalityvalueusingwire-typeimage
(ISO 19232-1.2013, IDT)
Published on.2019-05-10
2019-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
1 range 1
2 Normative references 1
3 Terms and Definitions 1
4 wire image quality specification 1
5 use of image quality 4
6 Determination of image quality 4
Appendix A (informative) ASTME747-04 Generalized Silk Marking Guide 6
Reference 7
Foreword
GB/T 23901 "Non-destructive testing radiographic inspection image quality" is divided into five parts.
---Part 1. Determination of the image quality of the silk-type image quality meter;
--- Part 2. Determination of image quality values of stepped hole image quality meters;
--- Part 3. Image quality classification;
--- Part 4. Experimental evaluation of image quality and image quality table;
--- Part 5. Determination of image clarity of double-filament image quality.
This part is the first part of GB/T 23901.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 23901.1-2009 "Non-destructive testing of radiographic film quality - Part 1. Linear image quality
The determination of the index, compared with GB/T 23901.1-2009, the main changes are as follows.
---Modified normative references;
---Modified terms and definitions;
---" Radiographic film quality" was changed to "radiography to detect image quality";
--- "Image quality index" was changed to "image quality value";
--- "film" changed to "detector";
--- "Linear image quality meter", changed to "silk-type image quality meter";
--- Added Appendix A for the conversion between the ASTM wire type image quality mark and the GB image quality wire number.
This section uses the translation method equivalent to ISO 19232-1.2013 "Non-destructive testing radiographic inspection image quality Part 1. Silk
Determination of the image quality value of the image quality meter.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
---GB/T 19802-2005 Minimum requirements for non-destructive testing of industrial radiographic viewing lamps (ISO 5580.1985, IDT)
--- GB/T 23901.4-2019 Non-destructive testing - Radiographic image quality - Part 4. Image quality and image quality
Evaluation (ISO 19232-4.2013, IDT)
--- GB/T 27050.1-2006 Conformity assessment supplier's declaration of conformance Part 1. General requirements (ISO /IEC 17050-1.
2004, IDT)
This part is proposed and managed by the National Non-Destructive Testing Standardization Technical Committee (SAC/TC56).
This section drafted by. Shanghai Aerospace Power Technology Engineering Co., Ltd., Shanghai Space Propulsion Research Institute, China Guangdong Nuclear Engineering Co., Ltd., Lake
Beisanjiang Aerospace Jiangbei Machinery Engineering Co., Ltd., Zhejiang Jinyun Image Quality Meter Factory, Matrix Science and Technology Testing Technology (Beijing) Co., Ltd., Shanghai Materials
Materials Research Institute, Shanghai Aerospace Precision Machinery Research Institute, Shanghai Aerospace Equipment Manufacturing General Co., Ltd., Shanghai Satellite Equipment Research Institute, Sichuan Aerospace
Chuanan Fire Technology Co., Ltd., Shanghai Feitian Zhongzhi Technology Co., Ltd., Zhejiang Special Equipment Inspection and Research Institute, Aerospace Materials and Process Research
Research Institute, CITIC Daika Co., Ltd., Institute of Acoustics, Chinese Academy of Sciences, Donghai Research Station, Ningbo Special Equipment Inspection and Research Institute, Shanghai Airlines
Tiantian Control Technology Research Institute, Aintik Testing Technology (Shanghai) Co., Ltd.
The main drafters of this section. Xu Guozhen, Chen Yiwei, Jiang Jiansheng, Ding Jie, Wang Xiaoyong, Liu Zhanglong, Jiang Yunxi, Zhu Congbin, Zhou Jianping, Wei Yu,
Xu Wei, Sun Jianwei, Zhang Zheng, Wang Daolong, Huang Wenda, Lu Yanda, Yuan Life, Liu Jun, Hu Ling, Chen Hu, Yuan Zhizuo, Zhang Rui, Zhang Yifeng, Yan Lianna,
Ma Jun.
The previous versions of the standards replaced by this section are.
---GB/T 23901.1-2009.
Non-destructive testing radiographic inspection image quality
Part 1. Determination of image quality values of silk-type image quality
1 Scope
This part of GB/T 23901 specifies equipment and methods for determining the quality of radiographic images using a silk-type image quality meter.
This section applies to the determination of image quality by radiographic determination using a silk-type image quality meter.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
ISO 5580 Non-destructive testing industrial radiography viewing lamp minimum requirements (Non-destructive testing-Industrialradi-
ographiciluminators-Minimumrequirements)
ISO /IEC 17050-1 Conformity Assessment Suppliers - Conformity Assessment Part 1. General (Conformityassessment-
Supplier'sdeclarationofconformity-Part 1.Generalrequirements)
ISO 19232-4 - Non-destructive testing - Radiographic image quality - Part 4. Evaluation of image quality and image quality (Non-
destructivetesting-Imagequalityofradiographs-Part 4.Experimentalevaluationofimagequality
Valuesandimagequalitytables)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Image quality
Image quality
Radiographic detection image features reflecting the extent of the displayed details.
3.2
Image quality image qualityindicator; IQI
The ability to measure the quality of the image, consisting of a series of different grades of wire or a stepped hole.
Note. The image quality indicator can also be expressed by image quality indicator and IQI. The image quality type is usually a wire type or a stepped hole type.
3.3
Image quality value
Expressed as a requirement to determine or achieve the most fine or smallest pore identifiable on the radiographic image of the image quality.
Note. Image quality values can also be expressed in terms of image quality values and IQI sensitivity (IQIsensitivity). The number of the wire type image meter is shown in Table 1.
4 wire image quality specification
4.1 Image size and name
The wire type image quality meter is shown in Figure 1.
The unit is mm
Description.
l --- the length of the wire;
S---wire center spacing.
a Image quality marker area.
Figure 1 silk type image quality meter
The image quality series consists of 19 wires of different diameters with corresponding tolerances and corresponding wire numbers, see Table 1. These gold
The filaments are divided into four groups with overlapping ranges, each consisting of 7 consecutively numbered wires, namely W1~W7, W6~W12, W10~
W16 and W13~W19. The seven wires in the image quality meter are arranged in parallel with each other, and the length l of the wires is 10 mm, 25 mm or 50 mm, respectively.
The name of the image should i...