1、December 2013 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 19.100!%*Fg“2073568www.din.deDDIN EN ISO 19232-2Non-destructive testing Image quality of radiographs Part 2: Determination of the image quality value using step/hole-typeimage quality indicators (ISO 19232-2:2013);English version EN ISO 19232-2:2013,English translation of DIN EN ISO 19232-2:2013-1
3、2Zerstrungsfreie Prfung Bildgte von Durchstrahlungsaufnahmen Teil 2: Ermittlung der Bildgtezahl mit Stufe/Loch-Typ-Bildgteprfkrper(ISO 19232-2:2013);Englische Fassung EN ISO 19232-2:2013,Englische bersetzung von DIN EN ISO 19232-2:2013-12Essais non destructifs Qualit dimage des radiogrammes Partie 2
4、: Dtermination de lindice de qualit dimage laide dindicateurs trous et gradins (ISO 19232-2:2013);Version anglaise EN ISO 19232-2:2013,Traduction anglaise de DIN EN ISO 19232-2:2013-12SupersedesDIN EN 462-2:1994-06www.beuth.deDocument comprises 13 pagesIn case of doubt, the German-language original
5、shall be considered authoritative.11.13 DIN EN ISO 19232-2:2013-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 19232-2:2013) has been prepared by Technical Committee CEN/TC 138 “Non-destructive testing” (Secretariat: AFNOR, France) in collaboration with Technical
6、 Committee ISO/TC 135 “Non-destructive testing”. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-08-22 AA Durchstrahlungsprfung und Strahlenschutz. DIN EN ISO 19232 consists of the follow
7、ing 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 image quality indicators Part 3: Image quality class
8、es 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 indicators The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 558
9、0 DIN EN 25580 ISO 19232-1 DIN EN ISO 19232-1 ISO 19232-4 DIN EN ISO 19232-4 ISO 19232-5 DIN EN ISO 19232-5 Amendments This standard differs from DIN EN 462-2:1994-06 as follows: a) the content of DIN EN 462-2:1994-06 has been adopted with minor technical changes; b) the marking applied on the IQI h
10、as been changed to ISO letters; c) the text of the standard has been editorially revised. Previous editions DIN EN 462-2: 1994-06 DIN EN ISO 19232-2:2013-12 3 National Annex NA (informative) Bibliography DIN EN 25580, Non-destructive testing Industrial radiographic illuminators Minimum requirements
11、DIN EN ISO 19232-1, Non-destructive testing Image quality of radiographs Part 1: Determination of the image quality value using wire-type image quality indicators DIN EN ISO 19232-4, Non-destructive testing Image quality of radiographs Part 4: Experimental evaluation of image quality values and imag
12、e quality tables DIN EN ISO 19232-5, Non-destructive testing Image quality of radiographs Part 5: Determination of the image unsharpness value using duplex wire-type image quality indicators DIN EN ISO 19232-2:2013-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NO
13、RM EN ISO 19232-2 June 2013 ICS 19.100 Supersedes EN 462-2:1994 English Version 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) Essais non destructifs Qualit dimage des radiogrammes
14、 Partie 2: Dtermination de lindice de qualit dimage laide dindicateurs trous et gradins (ISO 19232-2:2013) Zerstrungsfreie Prfung Bildgte von Durchstrahlungsaufnahmen Teil 2: Ermittlung der Bildgtezahl mit Stufe/Loch-Typ-Bildgteprfkrper (ISO 19232-2:2013) This European Standard was approved by CEN o
15、n 15 May 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations 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 b
16、e obtained on application to the CEN-CENELEC Management Centre or to any CEN member. 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
17、the CEN-CENELEC Management Centre has the same status as the official versions. 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, I
18、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, 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: Aven
19、ue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19232-2:2013: E Contents Page Foreword .3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Specification for step/hole-type image
20、 quality indicators 5 4.1 Dimensions, manufacture, designation 5 4.1.1 Dimensions 5 4.1.2 Manufacture .5 4.1.3 Designation 5 4.2 Material .6 4.3 Marking .6 4.4 Declaration of conformity .7 5 Use of image quality indicators . 7 5.1 Selection . 7 5.2 Arrangement 7 6 Determination of image quality valu
21、e 88888 Bibliography 9 8DIN EN ISO 19232-2:2013-12 EN ISO 19232-2 (E) 2Foreword This document (EN ISO 19232-2:2013) has been prepared by Technical Committee ISO/TC 135 “Non- destructive testing” in collaboration with Technical Committee CEN/TC 138 “Non-destructive testing” the secretariat of which i
22、s 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 withdrawn at the latest by December 2013. Attention is drawn to the poss
23、ibility 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 462-2:1994. This second edition cancels and replaces the first edition (ISO 19232-2:2004
24、), of which it constitutes a minor revision with the following changes: null updated references; null statement that EN wire IQIs of EN 462-2:19941 and its designation are identical to ISO wire IQIs null and its designation, as defined in this part of ISO 19232; null replacement of film by detector,
25、 which includes film and digital detectors. It also incorporates the Technical Corrigendum, ISO 19232-2:2004/Cor. 1:2007. ISO 19232 consists of the following parts under the general title Non-destructive testing Image quality of radiographs: null Part 1: Determination of the image quality value usin
26、g wire-type image quality indicators null Part 2: Determination of the image quality value using step/hole-type image quality indicators null Part 3: Image quality classes null Part 4: Experimental evaluation of image quality values and image quality tables null Part 5: Determination of the image un
27、sharpness value using duplex wire-type image quality indicators Endorsement notice The text of ISO 19232-2:2013 has been approved by CEN as EN ISO 19232-2:2013 without any modification. DIN EN ISO 19232-2:2013-12 EN ISO 19232-2 (E) 3According to the CEN-CENELEC Internal Regulations, the national sta
28、ndards 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
29、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 1 ScopeThis part of ISO 19232 specifies a device and a method for the determination of the image quality of radiographs using step/hole-type image quality
30、 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 referenced document (includin
31、g 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 radiographs Part 4: Experi
32、mental 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 quality indicatorIQIdevi
33、ce 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 the thinnest element w
34、hich can be detected on the radiographNote 1 to entry: For step/hole-type IQIs, the element numbers are the hole numbers as given in Table 1.DIN EN ISO 19232-2:2013-12 EN ISO 19232-2 (E) 44 Specification for step/hole-type image quality indicators4.1 Dimensions, manufacture, designation4.1.1 Dimensi
35、onsThe IQI system is based on a series of 18 steps of different thicknesses and holes of corresponding diameters which are specified in Table 1 along with the relevant tolerances and the hole numbers. These steps and holes have been subdivided into four overlapping ranges of six consecutive hole num
36、bers, viz. H 1 to H 6, H 5 to H 10, H 9 to H 14, and H 13 to H 18.Dimensions in millimetresKeyIQI No.H 1 H 5 H 9 H 13h 10 mm 10 mm 10 mm 15 mml 5 mm 7 mm 7 mm 15 mmaSpace for identification marking.Figure 1 Step/hole-type image quality indicator4.1.2 ManufactureThe steps of thicknesses lower than 0,
37、8 mm shall contain two holes of the same diameter. The steps of thicknesses equal or higher than 0,8 mm shall contain one hole. The minimum distance from the centre of a hole to the edge of the step, or to the edge of the second hole in that step, shall be the hole diameter plus 1 mm. The holes shal
38、l be perpendicular to the surface and shall not have a bevelled edge.4.1.3 DesignationThe written designation of an image quality indicator shall be labelled with the letters IQI, the number of this part of ISO 19232, the number of the smallest hole as specified in Table 1 (e.g. H 5), and the symbol
39、 denoting the IQI material (e.g. FE).EXAMPLE IQI ISO 19232-2-H 5 FEIQIs with the designation EN 462-21are considered to be identical to IQIs with the designation ISO 19232-2.DIN EN ISO 19232-2:2013-12 EN ISO 19232-2 (E) 5Table 1 Hole numbers, hole diameters, step thicknesses, and tolerances of the r
40、ange of IQIsDimensions in millimetresRange of image quality indicators Step/holeH 1 H 5 H 9 H 13 element (hole) numbernominal hole diameter and step thicknessnominal hole diameter and step thickness tolerances H 1 0,1250+ 0,015 H 2 0,160 H 3 0,200 H 4 0,250 H 5 0,320 H 6 0,400 H 7 0,500 H 8 0,6300+
41、0,020 H 9 0,800 H 10 1,000 H 11 1,2500+ 0,025 H 12 1,600aH 13 2,000aH 14 2,500aH 15 3,2000+ 0,030aH 16 4,000aH 17 5,000aH 18 6,3000+ 0,036aThese values may be used for special applications by agreement between contracting parties.4.2 MaterialAll parts of the IQI shall consist of the same material an
42、d shall be embedded in a protective covering material which shall not affect the image quality value.See Table 2 for usual IQI materials.4.3 MarkingThe marking applied on the IQI (see Figure 1) shall give the following information:a) number of the smallest hole printed next to the smallest hole;b) l
43、etters identifying the IQI material used, e.g. FE;c) ISO letters.EXAMPLE H 5 FE ISOIQIs with the letters EN are considered to be identical to IQIs with the letters ISO.The radiographic image of the identification shall not cause glare when the radiograph is viewed. It is recommended that the absorpt
44、ion of the marking is not more than twice the absorption of the thickest step.DIN EN ISO 19232-2:2013-12 EN ISO 19232-2 (E) 64.4 Declaration of conformityEach IQI shall be delivered with a declaration of conformity according to ISO/IEC 17050-1 which confirms that the IQI complies with this part of I
45、SO 19232. For identification, the IQI shall be numbered and marked by the producer.5 Use of image quality indicators5.1 SelectionThe IQI shall be selected in accordance with the material under test and its thicknesses.Whenever possible, the IQI shall be of the same type of material as the specimen u
46、nder test. For other cases, see ISO 19232-4.Table 2 Types of IQI and material used for selected groups of materialsIQI marking Hole number from Table 1 IQI materialSuitable for testing of the following materialsH 1 CUH 5 CUH 9 CUH 13 CUH 1 to H 6H 5 to H 10H 9 to H 14H 13 to H 18Copper Copper, zinc,
47、 tin, and their alloysH 1 FEH 5 FEH 9 FEH 13 FEH 1 to H 6H 5 to H 10H 9 to H 14H 13 to H 18Steel (low alloyed) Ferrous materialsH 1 TIH 5 TIH 9 TIH 13 TIH 1 to H 6H 5 to H 10H 9 to H 14H 13 to H 18Titanium Titanium and its alloysH 1 ALH 5 ALH 9 ALH 13 ALH 1 to H 6H 5 to H 10H 9 to H 14H 13 to H 18Al
48、uminium 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 is not possible, the IQI may be placed adjacent to the side of the section under test nearest
49、 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 thickness is as uniform as possible.Special arrangements are determined by application standards.DIN EN ISO 19232-2:2013-12 EN ISO 19232-2 (E) 76 Determination of image quality valueIn determining the image quality value, the conditions
