GB/T 31362-2015 English PDFUS$254.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 31362-2015: Non-destructive testing -- Thermal neutron radiographic testing -- Determination of beam L/D ratio Status: Valid
Basic dataStandard ID: GB/T 31362-2015 (GB/T31362-2015)Description (Translated English): Non-destructive testing -- Thermal neutron radiographic testing -- Determination of beam L/D ratio Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J04 Classification of International Standard: 19.100 Word Count Estimation: 13,189 Date of Issue: 2015-02-04 Date of Implementation: 2015-10-01 Adopted Standard: ISO 12721-2000, IDT Regulation (derived from): National Standards Bulletin 2015 No. 3 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 Summary: This Standard specifies the determination of the thermal neutron radiography Neutron beam collimation ratio (L/D values ??between 20 and 1000) test technology. The technical analysis of neutron radiography imaging quality shadow region of the device based on zero whole, without measure and calculate the physical size of the collimator system. This Standard used by the device are converted into Gd foil screen and high-resolution single-sided film inside the vacuum cartridge is tested. GB/T 31362-2015: Non-destructive testing -- Thermal neutron radiographic testing -- Determination of beam L/D ratio---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Non-destructive testing. Thermal neutron radiographic testing. Determination of beam L/D ratio ICS 19.100 J04 National Standards of People's Republic of China NDT Thermal neutron radiographic testing Determination of neutron beam L/D ratio (ISO 12721.2000, IDT) Issued on. 2015-02-04 2015-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the translation method identical with ISO 12721.2000 "Non-destructive testing thermal neutron radiography detected neutron beam L/D ratio Determination. " The standard non-destructive testing by the National Standardization Technical Committee (SAC/TC56) and focal points. This standard was drafted. China Institute of Atomic Energy, Shanghai Research Institute of Materials, Haitai Division Inspection Technologies Ltd, China Engineering Nuclear Physics Institute of Physics and Chemistry. The main drafters of this standard. Chen Dongfeng, Han Songbo, Liu Yuntao, Wang Hongli, Wu Meimei, Weiguo Hai Tang Bin, Wang Yu, Helin Feng, Sun Kai, Sun Yong, Hao Lijie, Liu Xiaolong, Li Yuqing, Jinyu Fei.IntroductionThis standard is intended to provide guidance to obtain reliable mass neutron radiography imaging data, and to help users determine heat-related Neutron radiography device is suitable for a particular application. NDT Thermal neutron radiographic testing Determination of neutron beam L/D ratio1 ScopeThis standard specifies the determination of the thermal neutron radiography neutron beam collimation ratio (L/D values \u200b\u200bbetween 20 and 1000) test technique. The technology group Analysis of image quality in neutron radiography Newtree shadow region of the device, without having to measure and calculate the physical size of the collimator system. This standard employed The devices have been placed by Gd foil conversion screen and high-resolution single-sided film cartridge inside the vacuum tested.2 Terms and definitionsThe following terms and definitions apply to this document. 2.1 Effective collimation than effectiveL/Dratio One of the factors that determine the imaging resolution neutron radiography apparatus, the size of the inlet aperture and an effective imaging plane distance (L) and the inlet The ratio of the effective aperture diameter (D) of. Note. The actual measured L and D, L/D values \u200b\u200bcalculated with L/D values \u200b\u200bobtained by this method are different. 2.2 Full umbra shadow zone In the shadow image, all of the original object beam is blocked region (like solar eclipse), see Figure 1. Explanation. 1 --- beam; 2 --- object; 3 --- Full Movies region; 4 --- penumbra; 5 --- source. Figure 1 Schematic drawing area Newtree Movies 2.3 Penumbra penumbra In the shadow image, the initial part of the object beam is blocked region (hatched not determined sharpness), see Figure 1. 2.4 The initial beam primarybeam Originating from the neutron source, until the effect of the object/detection system occurs, remains collimated neutron beam state. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 31362-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 31362-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 31362-2015_English with my colleagues?Answer: Yes. 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