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GB/T 35394-2017 English PDF

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GB/T 35394-2017: Non-destructive testing -- X-ray digital radiography -- System properties
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Basic data

Standard ID GB/T 35394-2017 (GB/T35394-2017)
Description (Translated English) Non-destructive testing -- X-ray digital radiography -- System properties
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J04
Classification of International Standard 19.100
Word Count Estimation 22,23
Date of Issue 2017-12-29
Date of Implementation 2018-04-01
Regulation (derived from) National Standards Bulletin 2017 No. 32
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35394-2017: Non-destructive testing -- X-ray digital radiography -- System properties

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Non-destructive testing - X-ray digital radiography - System properties ICS 19.100 J04 National Standards of People's Republic of China Non-destructive testing X-ray digital imaging detection system characteristics 2017-12-29 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard by the National Standardization Technical Committee nondestructive testing (SAC/TC56) and focal point. This standard was drafted unit.China Institute of Engineering Physics Machinery Manufacturing Technology Institute, Lanzhou Ruiqi Gede Measurement and Control Technology Co., Ltd., in National Institute of Special Equipment Testing and Research, CITIC Daika Co., Ltd., Hangzhou Huaan NDT Technology Co., Ltd., China Ordnance Science Research Institute of Ningbo Branch, Hubei Sanjiang Space Jiangbei Machinery Engineering Co., Ltd., Suzhou Industrial Park Road Green Technology Co., Ltd., Shanghai Institute of Materials, Harbin Boiler Factory Co., Ltd., Yantai Huake Testing Equipment Co., Ltd., Chongqing University, Tsinghua University, AVIC Beijing Airlines Manufacturing Engineering Research Institute, Chengdu Huayu Testing Technology Co., Ltd., Chengdu Aircraft Industry (Group) Co., Ltd., South Germany Certification Testing (China) Limited Shanghai Branch, Guangdong Yingquan High-tech Materials Co., Ltd. The main drafters of this standard. Sun Chaoming, Sun Zhongcheng, Liang Lihong, Liu Jun, Zhang Liming, Ni Peijun, Wang Xiaoyong, Tao Weidao, Ding Jie, Meng Ling, Wang Jianhua, Duan Xiao reef, Xiao Yongshun, Song Zhenfang, Tang Liangming, Yang Yang, Liu Erjun, Zeng Xiangzhao. Non-destructive testing X-ray digital imaging detection system characteristics

1 Scope

This standard specifies the X-ray digital imaging system equipment requirements and measurement conditions and linear range, the basic spatial resolution, the minimum Licensed grayscale amplitude, contrast sensitivity, thickness tolerance and exposure curve determination method. This standard applies to metallic materials, non-metallic materials, composite materials and other products X-ray digital imaging test equipment performance measurement.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 12604.11 Terminology for non-destructive testing X-ray digital imaging test GB/T 23901.5 Non-destructive testing Radiographic film quality - Part 5. Determination of unsharpness of bilinear image quality meter Nondestructive testing - X - ray digital imaging test methods GB/T 35389 Nondestructive testing X - ray digital imaging detection guidelines

3 Terms and definitions

GB/T 12604.11 defined terms and definitions apply to this document.

4 symbol

The symbols listed in Table 1 apply to this document. Table 1 symbols and instructions Symbol Description CNR contrast to noise ratio CNRg Contrast-to-noise ratio measured using a groove with a specific thickness difference CSa contrast sensitivity D Grayscale, the ratio of the grayscale value of the image to the full amplitude Dip line modulation degree E detector single frame exposure fps The number of image frames the detector outputs per second GVmax detector can output the maximum gray value The average gray value in the GVmean area GVmin minimum allowable gray level

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