GB/T 23903-2009 English PDF

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GB/T 23903-2009: Resolution indicators for ray image
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23903-2009	369	Add to Cart	3 days	Resolution indicators for ray image	Valid

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GB/T 23901.3   GB/T 23901.2   GB/T 23901.4   GB/T 23904   GB/T 23902   GB/T 23901.1   

Basic data

Standard ID: GB/T 23903-2009 (GB/T23903-2009)
Description (Translated English): Resolution indicators for ray image
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 19.100
Word Count Estimation: 16,164
Date of Issue: 2009-05-26
Date of Implementation: 2009-12-01
Quoted Standard: GB/T 1470; GB/T 12604.2; GB/T 19001; GB/T 27025
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.7 (Total No.147)
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 test meter -ray image resolution classification, technical requirements and test methods. This standard applies to the lead alloy or metal to its density equivalent resolution of the test meter. This standard applies to the resolution of the test meter type test and factory inspection. As a user of this standard may also order acceptance.

GB/T 23903-2009: Resolution indicators for ray image

---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.
Resolution indicators for ray image ICS 19.100 J04 National Standards of People's Republic of China Ray image resolution tester Posted 2009-05-26 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Category 1 5 2 Technical Requirements 6 Test Method 2 7 Inspection rules 3 8 marks 4 9 logo and tag 4 10 packaging, transportation and storage 4 Appendix A (informative) resolution test meter structure type Example 5 References 8

Foreword

Appendix A of this standard is an informative annex. The standard non-destructive testing by the National Standardization Technical Committee (SAC/TC56) and focal points. This standard was drafted. Guangdong Ying-chuen Steel Products Co., Ltd. Nanjing Nimda graphic images, Academy of Military Medical Radiation Medicine Sciences, Beijing Borch Technology Development Co., Shanghai Research Institute of Materials. The main drafters of this standard. according to Mr Tsang, Ning Hao, Zhang, Liu wide, Jinyu Fei.

Introduction

Ray detection systems and radiation detection image resolution and resolution radiographs resolution imaging system is the assessment of the quality and image Image quality as well as an important indicator of the quality of photographic film, as well as radiation detection equipment and test the image quality of an important basis for acceptance, need to use quality Amount detection instruments measure it objectively, this appliance is ray imaging with the resolution tester. It can play an objective description of the image points Identified the role of force, directly reflects the performance of image resolution, image is an important instrument to detect quality control system. Resolution tester Not only can be used in conventional radiation detection, it can also be used to detect ray digital imaging, industrial CT, medical CT, medical X-ray diagnostic equipment and FIG. Detection of image quality. Resolution can be measured by the test meter X-ray imaging system of visual resolution, intensifying screen - film systems for resolution, image transmission system The resolution can also test the imaging system modulation transfer function (MTF). Standard resolution test meter line for the number of columns and structure are recommended and suggestive, it may need to select the appropriate practical use The structure and form. Ray image resolution tester

1 Scope

This standard specifies the test meter ray image resolution of classification, technical requirements and test methods. This standard applies to its density of lead alloy or equivalent metal resolving power tester. This standard applies to the resolution of the test meter type test and factory inspection. This standard can also be ordered as a user acceptance basis.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1470 lead and lead-antimony alloy plate GB/T 12604.2 Terminology for nondestructive testing radiographic testing (GB/T 12604.2-2005, ISO 5576.1997, Non-destructivetesting-IndustrialX-rayandgamma-rayradiology-Vocabulary, IDT) GB/T 19001 quality management system requirements (GB/T 19001-2008, ISO 9001.2008, IDT) GB/T 27025 testing and calibration laboratories General requirements (GB/T 27025-2008, ISO /IEC 17025.2005, IDT)

3 Terms and Definitions

GB/T 12604.2 and established the following terms and definitions apply to this standard. 3.1 Resolution test meter in length and a predetermined width of the metal wire, usually made of lead, tungsten or other heavy metals. 3.2 It consists of a line and its width equal to the distance between adjacent (space) components. 3.3 Line within the width direction of the total number of lines per unit length, unit LP/mm. 3.4 The length and width of the same root-like lines and its width is located in the same shape - 1 pitch (space) between lines of the composition. Category 4 This standard applies resolution test meter types can be classified as follows. a) beam arrangement according to the law of the line can be divided into. 1) arithmetic arrangement; 2) geometric arrangement. b) by line of beam arrangement can be divided into. 1) are arranged in parallel; ......

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