1、December 2011 Translation by DIN-Sprachendienst.English price group 15No 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).I
2、CS 25.160.40!$xXo“1855376www.din.deDDIN EN ISO 10863Non-destructive testing of welds Ultrasonic testing Use of time-of-flight diffraction technique (TOFD) (ISO 10863:2011)English translation of DIN EN ISO 10863:2011-12Zerstrungsfreie Prfung von Schweiverbindungen Ultraschallprfung Anwendung der Beug
3、ungslaufzeittechnik (TOFD) (ISO 10863:2011)Englische bersetzung von DIN EN ISO 10863:2011-12Contrle non destructif des assemblage souds Contrle par ultrasons Utilisation de la technique de diffraction des temps de vol (mthode TOFD)(ISO 10863:2011)Traduction anglaise de DIN EN ISO 10863:2011-12Supers
4、edesDIN CEN/TS 14751:2005-02www.beuth.deDocument comprises 35 pagesIn case of doubt, the German-language original shall be considered authoritative.12.11 DIN EN ISO 10863:2011-12 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC
5、121 “Welding” (Secretariat: DIN, Germany) in collaboration with Technical Committee ISO/TC 44 “Welding and allied processes”, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). The responsible German body involved in its preparation was the Normenaussch
6、uss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-08-23 AA Ultraschallprfung. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 9712 E DIN EN ISO 9712 ISO 17635 DIN EN ISO 17635 ISO 17640 DIN EN ISO 1764
7、0 Amendments This standard differs from DIN CEN/TS 14751:2005-02 as follows: a) normative references have been updated, ISO 9712 has been added; b) the standard has been revised in form and substance and brought in line with the current rules of presentation; c) the figures in Annex A “Reference blo
8、cks” have been replaced and some examples have been deleted. Previous editions DIN CEN/TS 14751: 2005-02 National Annex NA (informative) Bibliography E DIN EN ISO 9712, Non destructive testing Qualification and certification of NDT personnel General principles DIN EN ISO 17635, Non-destructive testi
9、ng of welds General rules for metallic materials DIN EN ISO 17640, Non-destructive testing of welds Ultrasonic testing Techniques, testing levels, and assessment EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10863 September 2011 ICS 25.160.40 Supersedes CEN/TS 14751:2004English Version No
10、n-destructive testing of welds - Ultrasonic testing - Use of time-of-flight diffraction technique (TOFD) (ISO 10863:2011) Contrle non destructif des assemblages souds - Contrle par ultrasons - Utilisation de la technique de diffraction des temps de vol (mthode TOFD) (ISO 10863:2011) Zerstrungsfreie
11、Prfung von Schweiverbindungen - Ultraschallprfung - Anwendung der Beugungslaufzeittechnik (TOFD) (ISO 10863:2011) This European Standard was approved by CEN on 27 August 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur
12、opean 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 member. This European Standard exists in three official versio
13、ns (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. CEN members are the national standards bodies of Austria, B
14、elgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN C
15、OMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10863:2011: EContents DIN EN I
16、SO 10863:2011-12 EN ISO 10863:2011 (E) 2 PageForeword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 General remarks on the capabilities of the technique.5 5 Testing levels .6 6 Information required prior to testing .6 6.1 Items to be defined by specification6 6.2 Specific informat
17、ion required by the operator before testing 7 6.3 Written test instruction or procedure 7 7 Requirements for personnel and equipment 7 7.1 Personnel qualifications .7 7.2 Equipment 8 8 Preparation for testing 8 8.1 Volume to be inspected 8 8.2 Setup of probes9 8.3 Scan increment setting .9 8.4 Geome
18、try considerations .9 8.5 Preparation of scanning surfaces9 8.6 Temperature .10 8.7 Couplant .10 8.8 Provision of datum points 10 9 Testing of base material10 10 Range and sensitivity settings.11 10.1 Settings.11 10.2 Checking of the settings .11 10.3 Reference blocks .12 11 Weld testing13 12 Interp
19、retation and analysis of TOFD images 13 12.1 General13 12.2 Assessing the quality of the TOFD image.13 12.3 Identification of relevant TOFD indications 14 12.4 Classification of relevant TOFD indications .14 12.5 Determination of location and size 15 12.6 Evaluation against acceptance criteria .16 1
20、3 Test report 16 Annex A (informative) Reference blocks 18 Annex B (informative) Examples of TOFD scans.23 Bibliography 33 Foreword This document (ISO 10863:2011) has been prepared by Technical Committee CEN/TC 121 “Welding”, the secretariat of which is held by DIN, in collaboration with Technical C
21、ommittee ISO/TC 44 Welding and allied processes”. 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 March 2012, and conflicting national standards shall be withdrawn at the latest by March 2012. Att
22、ention 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 CEN/TS 14751:2004. According to the CEN/CENELEC Internal Regulat
23、ions, 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta
24、, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN ISO 10863:2011-12 EN ISO 10863:2011 (E) 3 “ 1 Scope This International Standard specifies the application of the time-of-flight diffraction (TOFD) technique to the semi- or
25、 fully automated ultrasonic testing of fusion-welded joints in metallic materials of minimum thickness 6 mm. It applies to full penetration welded joints of simple geometry in plates, pipes, and vessels, where both the weld and parent material are low-alloyed carbon steel. Where specified and approp
26、riate, TOFD can also be used on other types of materials that exhibit low ultrasonic attenuation (especially that due to scatter). Where material-dependent ultrasonic parameters are specified in this International Standard, they are based on steels having a sound velocity of (5 920 50) m/s for longi
27、tudinal waves, and (3 255 30) m/s for transverse waves. It is necessary to take this fact into account when examining materials with a different velocity. This International Standard makes reference to the basic standard EN 583-6 and provides guidance on the specific capabilities and limitations of
28、TOFD for the detection, location, sizing and characterization of discontinuities in fusion-welded joints. TOFD can be used as a stand-alone method or in combination with other non-destructive testing (NDT) methods or techniques, for manufacturing inspection, and for in-service inspection. This Inter
29、national Standard specifies four testing levels (A, B, C, D) in accordance with ISO 17635 and corresponding to an increasing level of inspection reliability. Guidance on the selection of testing levels is provided. This International Standard permits assessment of TOFD indications for acceptance pur
30、poses. This assessment is based on the evaluation of transmitted, reflected and diffracted ultrasonic signals within a generated TOFD image. This International Standard does not include acceptance levels for discontinuities. 2 Normative references The following referenced documents are indispensable
31、 for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9712, Non-destructive testing Qualification and certification of NDT personnel General principles
32、 ISO 17635, Non-destructive testing of welds General rules for metallic materials ISO 17640:2010, Non-destructive testing of welds Ultrasonic testing Techniques, testing levels, and assessment EN 473, Non-destructive testing Qualification and certification of NDT personnel General principles EN 583-
33、6, Non-destructive testing Ultrasonic examination Part 6: Time-of-flight diffraction technique as a method for detection and sizing of discontinuities DIN EN ISO 10863:2011-12 EN ISO 10863:2011 (E) 4 EN 1330-4, Non-destructive testing Terminology Part 4: Terms used in ultrasonic testing EN 12668 (al
34、l parts), Non-destructive testing Characterization and verification of ultrasonic examination equipment 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1330-4 and the following apply. 3.1 time-of-flight diffraction setup TOFD setup probe arrangement d
35、efined by probe characteristics (e.g. frequency, probe element size, beam angle, wave mode) and probe centre separation 3.2 probe centre separation PCS distance between the index points of the two probes NOTE The PCS for two probes located on a curved surface is the straight-line, geometric separati
36、on between the two probe index points and not the distance measured along the surface. 3.3 beam intersection point point of intersection of the two main beam axes 3.4 time-of-flight diffraction indication TOFD indication pattern or disturbance in the time-of-flight diffraction image which may need f
37、urther evaluation 3.5 time-of-flight diffraction image TOFD image two-dimensional image, constructed by collecting adjacent A-scans while moving the time-of-flight diffraction setup NOTE The signal amplitude of the A-scans is typically represented by grey-scale values. 3.6 offset scan scan parallel
38、to the weld axis, where the beam intersection point is not on the centreline of the weld 4 General remarks on the capabilities of the technique General principles of the TOFD technique are described in EN 583-6. For the testing of fusion-welded joints, some specific capabilities and limitations of t
39、he technique have to be considered. The TOFD technique is an ultrasonic image-generating technique, which offers the capability of detection, location, and sizing. To a certain extent, characterization of discontinuities in the weld material as well as in the adjacent parent material is also possibl
40、e. Compared with purely reflection-based techniques, the TOFD technique, which is based upon diffraction as well as reflection, is less sensitive to the orientation of the discontinuity. Discontinuities oriented perpendicular to the surface, and at intermediate angles of tilt, are detectable as well
41、 as discontinuities in the weld fusion faces. DIN EN ISO 10863:2011-12 EN ISO 10863:2011 (E) 5 In certain circumstances (thickness, weld preparation, scope of testing, etc.) more than one single TOFD setup is required. A typical TOFD image is linear in time (vertical axis) and probe movement (horizo
42、ntal axis). Because of the V-configuration of the ultrasound paths, the location of a possible discontinuity is then non-linear. TOFD testing has to be carried out in a correct and consistent way, such that valid images are generated which can be evaluated correctly, e.g. coupling losses and data ac
43、quisition errors have to be avoided, see 12.2. The interpretation of TOFD images requires skilled and experienced operators. Some typical TOFD images of discontinuities in fusion-welded joints are provided in Annex B. There is a reduced capability for the detection of discontinuities close to or con
44、nected with the scanning surface or with the opposite surface. This has to be considered especially for crack-sensitive steels or at in-service inspections. In cases where full coverage of these zones is required, additional measures shall be taken, e.g. TOFD can be accompanied by other NDT methods
45、or techniques. Diffracted signals from weld discontinuities can have small amplitude responses. The grain scatter effect from coarse-grained material can hinder the detection and evaluation of such responses. This shall be taken into account whenever inspecting such material. 5 Testing levels This I
46、nternational Standard specifies four testing levels (A, B, C and D, see Table 1). From testing level A to testing level C an increasing reliability is achieved. Table 1 Testing levels Testing level TOFD setup Reference block for setup verification (see 8.2) Reference block for sensitivity settings (
47、see 10.1.4) Offset scan Written test procedure A As in Table 2 No No No This International Standard B As in Table 2 No Yes No This International Standard C As in Table 2 Yes Yes aYes D As defined by specification Yes Yes aYes aThe necessity, number and position of offset scans have to be determined.
48、 If the specified acceptance level requires detection of a certain size of discontinuity at both or one surface of the weld (see Clause 4), this can necessitate the use of techniques or methods outside the scope of this International Standard. For manufacturing inspections (see also ISO 17635), all testing levels are applicable. Level A is only applicable for wall thicknesses up to 50 mm. For in-service inspections, only testing level D shall be applied. 6 Information required prior to testing 6.1
