BS EN ISO 17643-2015 Non-destructive testing of welds Eddy current examination of welds by complex plane analysis《焊接的无损检测 通过综合平面分析检验焊接的边缘电流》.pdf

1、BSI Standards PublicationBS EN ISO 17643:2015Non-destructive testing of welds Eddy current examination of welds by complex plane analysisBS EN ISO 17643:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 17643:2015. It supersedes BS EN 1711:2000 which is w

2、ithdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contr

3、act. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79661 6 ICS 25.160.40 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the au

4、thority of the Standards Policy and Strategy Committee on 31 October 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17643 September 2015 ICS 25.160.40 Supersedes EN 1711:2000English Version Non-destructive testi

5、ng of welds - Eddy current examination of welds by complex plane analysis (ISO 17643:2015) Contrle non destructif des assemblages souds - Contrle par courants de Foucault des assemblages souds par analyse des signaux dans le plan complexe (ISO 17643:2015) Zerstrungsfreie Prfung von Schweiverbindunge

6、n - Wirbelstromprfung von Schweiverbindungen durch Vektorauswertung (ISO 17643:2015) This European Standard was approved by CEN on 20 June 2015. 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

7、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 member. This European Standard exists in three official versions (English, French, German). A

8、 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. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cypr

9、us, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited King

10、dom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 176

11、43:2015 EBS EN ISO 17643:2015EN ISO 17643:2015 (E) 3 European foreword This document (EN ISO 17643:2015) has been prepared by ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN. This European Standard shall

12、be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. Attention is drawn to the possibility that some of the elements of this document m

13、ay 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 1711:2000. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to i

14、mplement 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Roma

15、nia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17643:2015 has been approved by CEN as EN ISO 17643:2015 without any modification. BS EN ISO 17643:2015ISO 17643:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and def

16、initions . 14 Personnel qualification . 15 Written procedures . 26 General applications . 26.1 Essential variables . 26.2 Additional information 26.3 Surface conditions 26.4 Equipment . 36.4.1 Instrumentation (excluding probe) . 36.4.2 Surface probes . 36.4.3 Accessories . 36.4.4 Systematic equipmen

17、t maintenance . 56.5 Test procedure . 56.5.1 Evaluation mode 56.5.2 Procedure for measuring coating thickness and material comparison relative to calibration block 56.5.3 Procedure for testing welds in ferritic materials . 66.6 Detectability of discontinuities 116.7 Procedure for testing welds in ot

18、her materials . 127 Test report 12Annex A (informative) Recommended eddy current method flow diagram 14 ISO 2015 All rights reserved iiiContents PageBS EN ISO 17643:2015ISO 17643:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards b

19、odies (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 technical committee has been established has the right to be represented on that committee. International organizati

20、ons, 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 of electrotechnical standardization.The procedures used to develop this document and those intended for its furthe

21、r maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives

22、).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 identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Intro

23、duction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to co

24、nformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testin

25、g and inspection of welds.This second edition cancels and replaces the first edition (ISO 17643:2005), which has been technically revised.iv ISO 2015 All rights reservedBS EN ISO 17643:2015INTERNATIONAL STANDARD ISO 17643:2015(E)Non-destructive testing of welds Eddy current testing of welds by compl

26、ex-plane analysis1 ScopeThis International Standard defines eddy current testing techniques for detection of surface breaking and near surface planar discontinuities, mainly in ferritic materials (weld material, heat-affected zones, base material).Eddy current testing can also be specified for use w

27、ith non-ferritic materials, for example in an application standard.The techniques can be applied to coated and uncoated objects during fabrication and in service, both onshore and offshore.Eddy current testing can be carried out on all accessible surfaces and on welds of almost any configuration.Unl

28、ess otherwise specified at specific items in this International Standard, the general principles of ISO 15549 apply.NOTE Eddy current testing is usually performed in the as-welded condition. However, the accuracy of the results can be affected by very rough surface finishes.2 Normative referencesThe

29、 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 (including any amendments) applies.ISO 9712, N

30、on-destructive testing Qualification and certification of NDT personnelISO 12718, Non-destructive testing Eddy current testing VocabularyISO 15548-1, Non-destructive testing Equipment for eddy current examination Part 1: Instrument characteristics and verificationISO 15548-2, Non-destructive testing

31、 Equipment for eddy current examination Part 2: Probe characteristics and verificationISO 15548-3, Non-destructive testing Equipment for eddy current examination Part 3: System characteristics and verificationISO 15549, Non-destructive testing Eddy current testing General principles3 Terms and defin

32、itionsFor the purposes of this document, the terms and definitions given in ISO 12718 apply.4 Personnel qualificationNon-destructive testing shall be performed by qualified and capable personnel. It is recommended that personnel are qualified in accordance with ISO 9712 or an equivalent standard at

33、an appropriate level in the relevant industry sector. ISO 2015 All rights reserved 1BS EN ISO 17643:2015ISO 17643:2015(E)5 Written proceduresIf a written procedure is required, it should be prepared in accordance with ISO 15549. Otherwise, the procedures detailed in this International Standard shall

34、 be followed.6 General applications6.1 Essential variablesPrior to eddy current testing, the following essential items shall be specified in accordance with ISO 15549: certification of testing personnel; testing plan; testing equipment; calibration of the equipment; calibration blocks; acceptance cr

35、iteria; recording of indications; reporting format; actions necessary for non-acceptable indications.6.2 Additional informationPrior to eddy current testing, the following information should be specified. Further information may be necessary for determination of the nature of the discontinuities and

36、 the composition or grade of the base material: type of filler metal; location and extent of welds to be tested; weld surface geometry; surface conditions; coating type and thickness.6.3 Surface conditionsEddy current testing can be used to detect surface cracks through non-metallic coatings up to a

37、 thickness of 2 mm. For coating thicknesses greater than 2 mm, the sensitivity of the test method shall be demonstrated in advance before eddy current testing is used.NOTE 1 Eddy current testing is dependent on close contact between the probe and the test surface. For effective eddy current testing

38、of welds, it should be noted that local adverse weld form, excessive weld spatter, scale, rust and loose paint can influence sensitivity by separating the probe from the test object and by inducing noisy responses.NOTE 2 It should be noted that some types of conductive coating, such as thermally spr

39、ayed aluminium and lead, can seriously influence the results as they can deposit electrically conductive metallic material in cracks open to the surface. Cracks covered with such a metallic deposit are not always indicated by this method.2 ISO 2015 All rights reservedBS EN ISO 17643:2015ISO 17643:20

40、15(E)6.4 Equipment6.4.1 Instrumentation (excluding probe)6.4.1.1 GeneralThe instrument used for eddy current testing in accordance with this International Standard shall be capable of analysis and display in the complex plane. The amplitude and phase of eddy current signals shall be measurable.6.4.1

41、.2 FrequencyThe eddy current instrumentation shall be able to operate at a selected frequency within the range 1 kHz to 1 MHz.6.4.1.3 Signal displayThe display shall include the facility to freeze eddy current signals on screen until reset by the operator. The trace shall be clearly visible under al

42、l lighting conditions expected during testing.6.4.1.4 Phase controlThe phase control shall be able to give complete rotation of displayed signals (360 ) in steps of no more than 10 each.6.4.2 Surface probes6.4.2.1 Probes for measuring coating thickness and material evaluation relative to calibration

43、 blockThe probe shall operate in the absolute mode at a selected frequency in the range from 1 kHz to 1 MHz. All the probes shall be clearly marked with their operating frequency range.6.4.2.2 Probes for testing of weldsFor testing of ferritic welds, probes specially designed for this purpose shall

44、be used.The coils assembly shall be orthogonal, tangential or equivalent.The electrical connection shall enable differential measurements which are characterized by having a minimal dependency on continuous or small variations in conductivity, permeability and lift-off in the welded and heat-affecte

45、d zones.The diameter of the probe shall be selected relative to the geometry of the component under test. Such probes shall be able to operate when covered by a thin layer of non-metallic wear-resistant material over the active face. If the probe is used with a cover, then the cover shall always be

46、in place during calibration. The probe shall operate at a selected frequency in the range from 100 kHz to 1 MHz6.4.3 Accessories6.4.3.1 Calibration blockA calibration block, of the same type of material as the component to be examined, shall be used. It shall have EDM (electric discharge machined) n

47、otches of 0,5 mm, 1,0 mm, and 2,0 mm depth, unless otherwise specified, for example in an application standard. The tolerance on the notch depth shall be 0,1 mm. The recommended width of the notches is 0,2 mm. An example of a calibration block is shown in Figure 1. ISO 2015 All rights reserved 3BS E

48、N ISO 17643:2015ISO 17643:2015(E)Dimensions in millimetresFigure 1 Example of a calibration block6.4.3.2 Non-conductive flexible stripsNon-conductive flexible strips of a known thickness to simulate the coating or actual coatings on the calibration block shall be used.The thickness of the non-conduc

49、tive flexible strips should be multiple of 0,5 mm.6.4.3.3 Probe extension cablesExtension cables may only be used between the probe and the instrumentation if the function, sensitivity and the resolution of the whole system can be preserved.4 ISO 2015 All rights reservedBS EN ISO 17643:2015ISO 17643:2015(E)6.4.3.4 Remote display and controlFor operation with long extension cables, the equipment shall include a device for remote signal display at the operators location.6.4.4 Systematic equipment maintena