DIN EN ISO 16827-2014 Non-destructive testing - Ultrasonic testing - Characterization and sizing of discontinuities (ISO 16827 2012) German version EN ISO 16827 2014《无损检测 超声波检测 不连续.pdf

1、June 2014 Translation by DIN-Sprachendienst.English price group 22No 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).ICS 1

2、9.100!%2c5“2156418www.din.deDDIN EN ISO 16827Non-destructive testing Ultrasonic testing Characterization and sizing of discontinuities (ISO 16827:2012);English version EN ISO 16827:2014,English translation of DIN EN ISO 16827:2014-06Zerstrungsfreie Prfung Ultraschallprfung Beschreibung und Grenbesti

3、mmung von Inhomogenitten (ISO 16827:2012);Englische Fassung EN ISO 16827:2014,Englische bersetzung von DIN EN ISO 16827:2014-06Essais non destructifs Contrle par ultrasons Caractrisation et dimensionnement des discontinuits (ISO 16827:2012);Version anglaise EN ISO 16827:2014,Traduction anglaise de D

4、IN EN ISO 16827:2014-06SupersedesDIN EN 583-5:2001-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 59 pages05.14 DIN EN ISO 16827:2014-06 2 A comma is used as the decimal marker. National foreword The text of ISO 16827:2012 has been p

5、repared by Technical Committee ISO/TC 135 “Non-destructive testing” and has been taken over as EN ISO 16827:2014 by Technical Committee CEN/TC 138 “Non-destructive testing” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (M

6、aterials 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 16810 DIN EN ISO 16810 ISO 16811 DIN EN ISO 16811 ISO 16823 DIN EN ISO 16823 ISO 16828 DIN EN IS

7、O 16828 ISO 23279 DIN EN ISO 23279 Amendments This standard differs from DIN EN 583-5:2001-02 as follows: a) ISO 16827:2012 (based on EN 583-5:2000) has been adopted in full; b) normative references have been updated; c) the standard has been editorially revised. Previous editions DIN EN 583-5: 2001

8、-02 National Annex NA (informative) Bibliography DIN EN ISO 16810, Non-destructive testing Ultrasonic testing General principles DIN EN ISO 16811, Non-destructive testing Ultrasonic testing Sensitivity and range setting DIN EN ISO 16823, Non-destructive testing Ultrasonic testing Transmission techni

9、que DIN EN ISO 16828, Non-destructive testing Ultrasonic testing Time-of-flight diffraction technique as a method for detection and sizing of discontinuities DIN EN ISO 23279, Non-destructive testing of welds Ultrasonic testing Characterization of indications in welds EUROPEAN STANDARD NORME EUROPEN

10、NE EUROPISCHE NORM EN ISO 16827 March 2014 ICS 19.100 Supersedes EN 583-5:2000English Version Non-destructive testing - Ultrasonic testing - Characterization and sizing of discontinuities (ISO 16827:2012) Essais non destructifs - Contrle par ultrasons -Caractrisation et dimensionnement des discontin

11、uits(ISO 16827:2012)Zerstrungsfreie Prfung - Ultraschallprfung - Beschreibung und Grenbestimmung von Inhomogenitten (ISO 16827:2012) This European Standard was approved by CEN on 9 February 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions

12、 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 member. This European Standard exists in t

13、hree 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. CEN members are the national standards

14、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, Poland, Portugal, Romania, Slovakia, Slovenia

15、, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved world

16、wide for CEN national Members. Ref. No. EN ISO 16827:2014 EContents Page Foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references. 6 3 Principles of characterization of discontinuities 6 3.1 General 6 3.2 Requirements for surface condition 7 4 Pulse echo techniques 7 4.1 General 7 4.2 Locati

17、on of discontinuity 7 4.3 Orientation of discontinuity 7 4.4 Assessment of multiple indications . 8 4.5 Shape of discontinuity . 8 4.5.1 Simple classification 8 4.5.2 Detailed classification of shape 9 4.6 Maximum echo height of indication . 9 4.7 Size of discontinuity 9 4.7.1 General 9 4.7.2 Maximu

18、m echo height techniques . 9 4.7.3 Probe movement sizing techniques . 10 4.7.4 Selection of sizing techniques 10 4.7.5 Sizing techniques with focussing ultrasonic probes . 11 4.7.6 Use of mathematical algorithms for sizing 11 4.7.7 Special sizing techniques . 11 5 Transmission technique 12 5.1 Gener

19、al 12 5.2 Location of discontinuity 12 5.3 Evaluation of multiple discontinuities . 12 5.4 Reduction of signal amplitude 13 5.5 Sizing of discontinuity . 13 Annex A (normative) Analysis of multiple indications 17 A.1 Lateral characterisation . 17 A.2 Transverse (Through-thickness) characterisation .

20、 17 A.3 Shadow technique 17 Annex B (normative) Techniques for the classification of discontinuity shape . 19 B.1 Simple classification 19 B.1.1 General 19 B.1.2 Reconstruction technique . 19 B.1.3 Echo envelope technique 19 B.2 Detailed classification 19 B.2.1 General 19 B.2.2 Echodynamic pattern t

21、echnique . 20 B.2.3 Directional reflectivity 22 B.3 Combination of data. 22 Annex C (informative) Maximum echo height sizing technique 30 C.1 Distance-gain-size (DGS) technique 30 C.1.1 Principle 30 C.1.2 Applications and limitations . 30 C.2 Distance-amplitude-correction (DAC) curve technique . 30

22、C.2.1 Principle 30 C.2.2 Applications and limitations . 31 2DIN EN ISO 16827:2014-06EN ISO 16827:2014 (E)Annex D (normative) Probe movement sizing techniques 32 D.1 Fixed amplitude level techniques . 32 D.1.1 Principle 32 D.1.2 Application and limitations . 32 D.2 6 dB drop from maximum technique .

23、32 D.2.1 Principle 32 D.2.2 Application and limitations . 32 D.3 12 dB or 20 dB drop from maximum technique 33 D.3.1 Principle 33 D.3.2 Application and limitations . 33 D.4 Drop to noise level technique . 33 D.4.1 Principle 33 D.4.2 Application and limitations . 33 D.5 6 dB drop tip location techniq

24、ue . 34 D.5.1 Principle 34 D.5.2 Application and limitations . 34 D.6 Beam axis tip location technique . 34 D.6.1 Principle 34 D.6.2 Application and limitations . 34 D.7 20 dB drop tip location technique 35 D.7.1 Principle 35 D.7.2 Application and limitations . 35 Annex E (normative) Iterative sizin

25、g technique 44 E.1 Scope . 44 E.2 Normal incidence testing 44 E.2.1 Principle 44 E.2.2 Adjustment of gain . 44 E.2.3 Procedure 44 E.3 Oblique incidence testing . 45 Annex F (normative) Mathematical algorithms for the estimation of the actual size of a Discontinuity . 50 F.1 Large planar discontinuit

26、ies . 50 F.2 Small planar discontinuities . 51 F.3 Planar discontinuities in a cylindrical test object . 53 Annex G (informative) Examples of special sizing techniques . 55 G.1 Tip diffraction techniques . 55 G.2 Synthetic aperture focussing technique (SAFT) . 56 3DIN EN ISO 16827:2014-06EN ISO 1682

27、7:2014 (E)ForewordThe text of ISO 16827:2012 has been prepared by Technical Committee ISO/TC 135 “Non-destructive testing” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 16827:2014 by Technical Committee CEN/TC 138 “Non-destructive testing” the secretar

28、iat 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 September 2014, and conflicting national standards shall be withdrawn at the latest by September 2014. Attention is d

29、rawn 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 583-5:2000. According to the CEN-CENELEC Internal Regulations, the natio

30、nal 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith

31、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 16827:2012 has been approved by CEN as EN ISO 16827:2014 without any modification. 4DIN EN ISO 16827:2014-06EN I

32、SO 16827:2014 (E)Introduction This International Standard is based on EN 583-5:2000+A1:2003, Non-destructive testing Ultrasonic examination Part 5: Characterization and sizing of discontinuities. The following International Standards are linked. ISO 16810, Non-destructive testing Ultrasonic testing

33、General principles ISO 16811, Non-destructive testing Ultrasonic testing Sensitivity and range setting ISO 16823, Non-destructive testing Ultrasonic testing Transmission technique ISO 16826, Non-destructive testing Ultrasonic testing Examination for discontinuities perpendicular to the surface ISO 1

34、6827, Non-destructive testing Ultrasonic testing Characterization and sizing of discontinuities ISO 16828, Non-destructive testing Ultrasonic testing Time-of-flight diffraction technique as a method for detection and sizing of discontinuities 5DIN EN ISO 16827:2014-06EN ISO 16827:2014 (E)1 Scope Thi

35、s document specifies the general principles and techniques for the characteriation and sizing of previously detected discontinuities in order to ensure their evaluation against applicable acceptance criteria. It is applicable, in general terms, to discontinuities in those materials and applications

36、covered by ,62. 2 Normative references The following referenced documents are indispensable 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 16810,

37、 Non-destructive testing Ultrasonic testing General principles ISO 16811, Non-destructive testing Ultrasonic testing Sensitivity and range setting ISO 16823, Non-destructive testing Ultrasonic testing Transmission technique ISO 16828, Non-destructive testing Ultrasonic testing Time-of-flight diffrac

38、tion technique as a method for detection and sizing of discontinuities ISO 23279, Non-destructive testing of welds Ultrasonic testing Characterization of indications in welds 3 Principles of characterization of discontinuities 3.1 General Characterization of a discontinuity involves the determinatio

39、n of those features which are necessary for its evaluation with respect to known acceptance criteria. Characterization of a discontinuity may include: a) determination of basic ultrasonic parameters (echo height, time of flight); b) determination of its basic shape and orientation; c) sizing, which

40、may take the form of either: i) the measurement of one or more dimensions (or area/volume), within the limitations of the methods; or ii) the measurement of some agreed parameter e.g. echo height, where this is taken as representative of its physical size; d) location e.g. the proximity to the surfa

41、ce or to other discontinuities; e) determination of any other parameters or characteristics that may be necessary for complete evaluation; 6DIN EN ISO 16827:2014-06EN ISO 16827:2014 (E)f) assessment of probable nature, e.g. crack or inclusion, where adequate knowledge of the test object and its manu

42、facturing history makes this feasible. Where the examination of a test object in accordance with the principles of ISO 16810 yields sufficient data on the discontinuity for its evaluation against the applicable acceptance criteria, no further characteriation is necessary. The techniques used for cha

43、racteriation shall be specified in conjunction with the applicable acceptance criteria. 3.2 Requirements for surface condition The surface finish and profile shall be such that it permits sizing of discontinuities with the desired accuracy. In general the smoother and flatter the surface the more ac

44、curate the results will be. For most practical purposes a surface finish of RD= 6,3 Pm for machined surfaces and 12,5 Pm for shotblasted surfaces are recommended. The gap between the probe and the surface should not exceed 0,5 mm. The above surface requirements should normally be limited to those ar

45、eas from which sizing is to be carried out as, in general, they are unnecessary for discontinuity detection. The method of surface preparation shall not produce a surface that gives rise to a high level of surface noise. 4 Pulse echo techniques 4.1 General The principal ultrasonic characteristics/pa

46、rameters of a discontinuity that are most commonly used for evaluation by the pulse echo techniques are described in 4.2 to 4.7 inclusive. The characteristics/parameters to be determined shall be defined in the applicable standard or any relevant contractual document, and shall meet the requirements

47、 of 10.1 of ISO 16810. 4.2 Location of discontinuity The location of a discontinuity is defined as its position within a test object with respect to an agreed system of reference co-ordinates. It shall be determined in relation to one or more datum points and with reference to the index point and be

48、am angle of the probe, and measurement of the probe position and beam path length at which the maximum echo height is observed. Depending on the geometry of the test object under examination, and the type of discontinuity, it may be necessary to confirm the location of the discontinuity from another

49、 direction, or with another probe angle, to ensure that the echo is not caused e.g. by a wave mode change at a geometrical feature of the test object. 4.3 Orientation of discontinuity The orientation of a discontinuity is defined as the direction or plane along which the discontinuity has its major axis (axes) with respect to a datum reference on the test obje