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GB/T 23901.2-2019: Non-destructive testing -- Image quality of radiographs -- Part 2: Determination of the image quality value using step/hole-type image quality indicators Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 23901.2: Historical versions
Similar standardsGB/T 23901.2-2019: Non-destructive testing -- Image quality of radiographs -- Part 2: Determination of the image quality value using step/hole-type image quality indicators---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT23901.2-2019 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 19.100 J 04 GB/T 23901.2-2019 / ISO 19232-2:2013 Replacing GB/T 23901.2-2009 Non-destructive testing - Image quality of radiographs - Part 2: Determination of the image quality value using step/hole-type image quality indicators (ISO 19232-2:2013, IDT) ISSUED ON: JUNE 04, 2019 IMPLEMENTED ON: JANUARY 01, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of the PRC. Table of ContentsForeword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Terms and definitions ... 5 4 Specification for step/hole-type image quality indicators ... 6 5 Use of image quality indicators ... 10 6 Determination of image quality value ... 10ForewordGB/T 23901 “Non-destructive testing - Image quality of radiographs” is divided into 5 parts: - Part 1: Determination of the image quality value using wire-type image quality indicators; - Part 2: Determination of the image quality value using step/hole-type image quality indicators; - Part 3: Image quality classes; - Part 4: Experimental evaluation of image quality values and image quality tables; - Part 5: Determination of the image quality unsharpness and basic spatial resolution value using duplex wire-type image quality indicators. This Part is Part 2 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 23901.2-2009 “Non-destructive testing - Image quality of radiographs - Part 2: Image quality indicators (step/hole type) - Determination of image quality value”. As compared with GB/T 23901.2-2009, the main changes are as follows: - Modify normative references (See Clause 2; Clause 2 of the 2009 edition); - Modify terms and definitions (See Clause 3; Clause 3 of the 2009 edition); - CHANGE the expression in Chinese of “Image quality of radiographs” [Translator note: There is another expression for “Image quality of radiographs” in Chinese]; - CHANGE the expression in Chinese of “image quality value” [Translator note: There is another expression for “image quality value” in Chinese]; - CHANGE “film” to “detector”. This Part, using translation method, is identical to ISO 19232-2:2013 “Non- destructive testing - Image quality of radiographs - Part 2: Determination of the image quality value using step/hole-type image quality indicators”. The documents of China which have a consistent correspondence with the international documents normatively referenced in this Part are as follows: - GB/T 19802-2005 Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (ISO 5580:1985, IDT) - GB/T 23901.4-2019 Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables (ISO 19232-4:2013, IDT) - GB/T 27050.1-2006 Conformity assessment - Suppliers declaration of conformity - part 1: General requirements (ISO/IEC 17050-1:2004, IDT) This Part was proposed by and shall be under the jurisdiction of National Technical Committee 56 on Non-destructive Testing of Standardization Administration of China (SAC/TC 56). Responsible drafting organizations of this Part: Shanghai Institute of Space Propulsion; Shanghai Aerospace Power Technology Engineering Co., Ltd.; Shanghai Research Institute of Materials; Zhejiang Jinyun IQI. Co.; Hubei Sanjiang Space Jiangbei Machinery Engineering Co., Ltd.; Matrix Science and Industry Testing Technologies (Beijing) Co., Ltd.; Shanghai Spaceflight Precision Machinery Institute; Shanghai Institute of Spacecraft Equipment; Shanghai Aerospace Equipment Manufacturer Co., Ltd.; Sichuan Aerospace Chuannan Fire Work Technology Co., Ltd.; China Nuclear Power Engineering Co., Ltd.; Shanghai Feitian Zhongzhi Technology Co., Ltd.; Zhejiang Academy of Special Equipment Science; Aerospace Research Institute of Materials & Processing Technology; CITIC Dicastal Co., Ltd.; Shanghai Acoustics Laboratory, Chinese Academy of Sciences; Ningbo Special Equipment Inspection and Research Institute; Shanghai Aerospace Control Technology Institute; NDT Testing Technology (Shanghai) Co., Ltd. Main drafters of this Part: Chen Yiwei, Xu Guozhen, Jiang Jiansheng, Ding Jie, Liu Zhanglong, Wang Xiaoyong, Jiang Yunxi, Zhou Jianping, Wei Quan, Sun Jiangang, Xu Wei, Zhang Zheng, Zhu Congbin, Wang Daolong, Huang Wenda, Lv Yanda, Yuan Shengping, Liu Jun, Hu Ling, Chen Hu, Yuan Zhizuo, Zhang Rui, Zhang Yifeng, Zhai Lianna, Ma Jun. The previous editions of the standard replaced by this Part were released as follows: - GB/T 23901.2-2009. Non-destructive testing - Image quality of radiographs - Part 2: Determination of the image quality value using step/hole-type image quality indicators1 ScopeThis Part of GB/T 23901 specifies a device and a method for the determination of the image quality of radiographs using step/hole-type image quality indicators. This Part applies to the determination of the image quality value of radiographs using step/hole-type image quality indicators.2 Normative referencesThe following documents are indispensable for the application of this document. For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document. ISO 5580 Non-destructive testing - Industrial radiographic illuminators - Minimum requirements ISO/IEC 17050-1 Conformity assessment - Supplier’s declaration of conformity - Part 1: General requirements ISO 19232-4 Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. 3.1 Image quality Characteristic of a radiographic image which determines the degree of detail it shows. 3.2 Image quality indicator; IQI Device comprising a series of wires or steps with holes of graded dimensions ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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