BS EN ISO 19232-1-2013 Non-destructive testing Image quality of radiographs Determination of the image quality value using wire-type image quality indicators《无损检测 射线照相底片像质 使用线型像质计进.pdf

1、BSI Standards PublicationBS EN ISO 19232-1:2013Non-destructive testing Image quality of radiographsPart 1: Determination of the image qualityvalue using wire-type image qualityindicators (ISO 19232-1:2013)BS EN ISO 19232-1:2013 BRITISH STANDARDNational forewordThis British Standard is the UK impleme

2、ntation of EN ISO19232-1:2013. It supersedes BS EN 462-1:1994 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/46, Non-destructive testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publicati

3、on does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 75213 1ICS 19.100Compliance with a British Standard cannot confer immunity fromlega

4、l obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 19232-1 June 2013 ICS 19.100 Supersedes EN 462-1:1994Engli

5、sh Version Non-destructive testing - Image quality of radiographs - Part 1: Determination of the image quality value using wire-type image quality indicators (ISO 19232-1:2013) Essais non destructifs - Qualit dimage des radiogrammes - Partie 1: Dtermination de lindice de qualit dimage laide dindicat

6、eurs fils (ISO 19232-1:2013) Zerstrungsfreie Prfung - Bildgte von Durchstrahlungsaufnahmen - Teil 1: Bildgteprfkrper (Drahtsteg) - Ermittlung der Bildgtezahl (ISO 19232-1:2013) This European Standard was approved by CEN on 15 May 2013. CEN members are bound to comply with the CEN/CENELEC Internal Re

7、gulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN me

8、mber. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

9、 CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan

10、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form a

11、nd by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19232-1:2013: EBS EN ISO 19232-1:2013EN ISO 19232-1:2013 (E) 3 Foreword This document (EN ISO 19232-1:2013) has been prepared by Technical Committee ISO/TC 135 “Non-destructive testing“ in collaboration with Technical Commi

12、ttee CEN/TC 138 “Non-destructive testing” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2013, and conflicting national standards shall be with

13、drawn at the latest by December 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 462-1:1994. Accordin

14、g to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gr

15、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 19232-1:2013 has been approved by CEN as EN ISO 19232-1:2013

16、 without any modification. BS EN ISO 19232-1:2013ISO 19232-1:2013(E) ISO 2013 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Specification for wire-type image quality indicators . 14.1 Dimensions, designation 14.2 Material . 24.3 Markin

17、g of IQI 24.4 Declaration of conformity 35 Use of image quality indicators . 45.1 Selection 45.2 Arrangement . 46 Determination of image quality value . 4Annex A (informative) Guidance for conversion of the ASTM E747-042standard wire identities 6Bibliography 7BS EN ISO 19232-1:2013ISO 19232-1:2013(E

18、)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a t

19、echnical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters

20、 of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated

21、to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for

22、 identifying any or all such patent rights.ISO 19232-1 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO Technical Committee TC 135, Non-destructive testing, Subcommittee SC 5, Radiation methods, in accordance with the Agreement on technical cooperation betwe

23、en ISO and CEN (Vienna Agreement).This second edition cancels and replaces the first edition (ISO 19232-1:2004), of which it constitutes a minor revision with the following changes: update of references and definitions; statement that EN wire IQIs of EN 462-1:19941and its designation are identical w

24、ith ISO wire IQIs and its designation, as defined in this part of ISO 19232; replacement of film by detector, which includes film and digital detectors; addition of a new Annex for conversion of ASTM wire IQI identities to ISO wire IQI numbers.It also incorporates the Technical Corrigendum, ISO 1923

25、2-1:2004/Cor. 1:2007.ISO 19232 consists of the following parts under the general title Non-destructive testing Image quality of radiographs: 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

26、 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 unsharpness value using duplex wire-type image quality indicatorsiv ISO 2013 All rights reservedBS EN ISO 19232-1:2013INTERNATIO

27、NAL STANDARD ISO 19232-1:2013(E)Non-destructive testing Image quality of radiographs Part 1: Determination of the image quality value using wire-type image quality indicators1 ScopeThis part of ISO 19232 specifies a device and a method for the determination of the image quality of radiographs using

28、wire-type image quality indicators.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the refere

29、nced document (including any amendments) applies.ISO 5580, Non-destructive testing Industrial radiographic illuminators Minimum requirementsISO/IEC 17050-1, Conformity assessment Suppliers declaration of conformity Part 1: General requirementsISO 19232-4, Non-destructive testing Image quality of rad

30、iographs 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.3.1image qualitycharacteristic of a radiographic image which determines the degree of detail it shows3.2image q

31、uality indicatorIQIdevice comprising a series of elements of graded dimensions which enable a measure of the image quality to be obtainedNote 1 to entry: The elements of IQI are commonly wires or steps with holes.3.3image quality valuemeasure of the image quality required or achieved and is equal to

32、 the thinnest element which can be detected on the radiographNote 1 to entry: For wire-type IQIs, the element numbers are given in Table 1.4 Specification for wire-type image quality indicators4.1 Dimensions, designationFigure 1 represents a wire-type image quality indicator. ISO 2013 All rights res

33、erved 1BS EN ISO 19232-1:2013ISO 19232-1:2013(E)Dimensions in millimetresKeyl lengths of the wiress wire centreline spacingaSpace for identification marking.Figure 1 Image quality indicator (wire-type)The IQI system is based on a series of 19 wires of different diameters which are specified in Table

34、 1 together with the relevant tolerances and the wire numbers. This series of wires has been subdivided into four overlapping ranges of seven consecutive wire numbers, viz. W 1 to W 7, W 6 to W 12, W 10 to W 16, and W 13 to W 19. The seven wires in an IQI are arranged parallel to each other. The len

35、gth of the wires, l, is 10 mm, 25 mm or 50 mm.The written designation of an image quality indicator shall be labelled with the letters IQI, the number of this part of ISO 19232, the wire number of the thickest wire as specified in Table 1 (e.g. W 10), the symbol denoting the wire material (e.g. FE),

36、 and the length (e.g. 25):EXAMPLE 1 IQI ISO 19232-1 - W 10 FE-25IQIs with the designation EN 462-11are considered to be identical to IQIs with the designation ISO 19232-1.NOTE Annex A gives a table for conversion of ASTM E747-042wire identities to the wire IQI values of this part of ISO 19232.The fu

37、ll designation may be abbreviated to the wire number of the thickest wire of the IQI (e.g. W 10) and the wire material (e.g. FE) where reference to this part of ISO 19232 is clear.EXAMPLE 2 W 10 FE4.2 MaterialAll the wires of an IQI shall consist of the same material and shall be embedded in a prote

38、ctive covering of a material which shall not affect the image quality value. See Table 2 for usual wire materials.4.3 Marking of IQIThe marking applied on the IQI (see Figure 1) shall give the following information:a) number of the thickest wire (1, 6, 10, or 13); this is located at the side of the

39、thickest wire;2 ISO 2013 All rights reservedBS EN ISO 19232-1:2013ISO 19232-1:2013(E)b) letters identifying the wire material used, e.g. FE;c) ISO letters.EXAMPLE 10 FE ISOIQIs with the letters EN are considered to be identical to IQIs with the letters ISO.The radiographic image of the identificatio

40、n shall not cause glare when the radiograph is viewed. It is recommended that the absorption of the marking is not more than twice the absorption of the thickest wire.4.4 Declaration of conformityEach IQI shall be delivered with a declaration of conformity according to ISO/IEC 17050-1 which confirms

41、 that the IQI complies with this part of ISO 19232. For identification, the IQI shall be numbered and marked by the producer.Table 1 Wire numbers, diameters, and limit deviationsDimensions in millimetresImage quality indicator including WireWire centre-line spacingsW 1 W 6 W 10 W 13element (wire) nu

42、mbernominal wire diameterdiameter tolerances W 1 3,20 0,039601,+ W 2 2,50 7501,+ W 3 2,00 601+ W 4 1,60 0,02501+ W 5 1,25 W 6 1,00 W 7 0,80 W 8 0,63 W 9 0,50 0,01 W 10 0,40 W 11 0,32 W 12 0,25 W 13 0,20 W 14 0,16 W 15 0,125 0,005 W 16 0,100 W 17 0,080 W 18 0,063 W 19 0,050 ISO 2013 All rights reserv

43、ed 3BS EN ISO 19232-1:2013ISO 19232-1:2013(E)5 Use of image quality indicators5.1 SelectionThe criteria for selecting the IQI to be used shall be the material under test and the image quality value expected or required.The wire material shall have a coefficient of absorption as close as possible to

44、that of the material under test. Where IQIs as listed in Table 2 are used for materials other than those listed in this table, refer to ISO 19232-4. In such cases, the wire material shall have the next lowest coefficient of absorption to that of the object under test. If this is not feasible because

45、 the differences in absorption are too great, IQIs made of the same type of material as the object under test shall be used.Table 2 Types of IQI and wire materials used for selected groups of materialsImage quality indicatorWire number Wire materialSuitable for testing of the following materialsW 1

46、CUW 6 CUW 10 CUW 13 CUW 1 to W 7W 6 to W 12W 10 to W 16W 13 to W 19Copper Copper, zinc, tin, and their alloysW 1 FEW 6 FEW 10 FEW 13 FEW 1 to W 7W 6 to W 12W 10 to W 16W 13 to W 19Steel (low alloyed)Ferrous materialsW 1 TIW 6 TIW 10 TIW 13 TIW 1 to W 7W 6 to W 12W 10 to W 16W 13 to W 19Titanium Tita

47、nium and its alloysW 1 ALW 6 ALW 10 ALW 13 ALW 1 to W 7W 6 to W 12W 10 to W 16W 13 to W 19Aluminium Aluminium and its alloys5.2 ArrangementWhen the radiograph is taken, the IQI shall be placed on the side of the section under test facing the source of radiation and remote from the detector.If this i

48、s not possible, the IQI may be placed adjacent to the side of the section under test nearest the detector. To indicate that this arrangement has been used, the image of a letter F shall be visible on the radiograph near the IQI marking.The IQI shall be placed on the object in an area where the thick

49、ness is as uniform as possible.Special arrangements may be determined by application standards.6 Determination of image quality valueIn determining the image quality value, the conditions for viewing radiographs specified in ISO 5580 shall be observed. The number of the thinnest wire which is clearly visible on the radiograph shall be 4 ISO 2013 All rights reservedBS EN ISO 19232-1:2013ISO 19232-1:2013(E)taken as the image quality value. The image of a wire is a