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1、BRITISH STANDARD BS EN 583-5:2001 Incorporating Amendment No. 1 Non-destructive testing Ultrasonic examination Part 5: Characterization and sizing of discontinuities The European Standard EN 583-5:2000, with the incorporation of amendment A1:2003 has the status of a British Standard ICS 19.100 ? BS
2、EN 583-5:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee on 15 January 2001 BSI 6 February 2004 ISBN 0 580 36209 4 National foreword This British Standard is the official English la
3、nguage version of EN 583-5:2000, including amendment A1:2003. The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secreta
4、ry. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogu
5、e or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the
6、text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front
7、cover, an inside front cover, the EN title page, pages 2 to 53 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 149716 February 2004 Revision to Foreword page and deletion of Ann
8、ex ZA EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 583-5 November 2000 + A1 December 2003 ICS 19.100 English version Non-destructive testing - Ultrasonic examination - Part 5: Characterization and sizing of discontinuities (includes amendment A1:2003) Essais non destructifs - Contrle ultraso
9、nore - Partie 5: Caractrisation et dimensionnement des discontinuits (inclut Iamendement A1:2003) Zerstrungsfreie Prfung - Ultraschallprfung - Teil 5: Beschreibung und Grenbestimmung von Inhomogenitten (enthlt nderung A1:2003) This European Standard was approved by CEN on 30 June 2000, and amendment
10、 A1 was approved by CEN on 20 November 2003 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
11、such national standards may be obtained on application to the 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
12、 and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slova
13、kia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
14、national Members. Ref. No. EN 583-5:2000 + A1:2003 E Page 2 EN 583-5:2000 Contents Page Foreword3 1Scope 4 2Normative references 4 3Principles of characterization of discontinuities4 3.1General4 3.2Requirements for surface condition5 4Pulse echo techniques5 4.1General5 4.2Location of discontinuity5
15、4.3Orientation of discontinuity5 4.4Assessment of multiple indications 5 4.5Shape of discontinuity 6 4.6Maximum echo height of indication.7 4.7Size of discontinuity7 5Transmission technique10 5.1General10 5.2Location of discontinuity10 5.3Evaluation of multiple discontinuities.10 5.4Reduction of sig
16、nal amplitude.10 5.5Sizing of discontinuity.11 Annex A (normative) Analysis of multiple indications14 Annex B (normative) Techniques for the classification of discontinuity shape 16 Annex C (informative) Maximum echo height sizing technique.26 Annex D (normative) Probe movement sizing techniques28 A
17、nnex E (normative) Iterative sizing technique.40 Annex F (normative) Mathematical algorithms for the estimation of the actual size of a discontinuity46 Annex G (informative) Examples of special sizing techniques 51 Page 3 EN 583-5:2000 Foreword This European Standard has been prepared by Technical C
18、ommittee 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 May 2001, and conflicting national standards shall be with
19、drawn at the latest by May 2001. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
20、this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard consists of the following parts under a general title “Non-destruc
21、tive testing Ultrasonic examination“: Part 1: General principles Part 2: Sensitivity and range setting Part 3: Transmission technique Part 4: Examination for imperfections perpendicular to the surface Part 5: Characterization and sizing of discontinuities Part 6: Time-of-flight diffraction technique
22、 as a method for detection and sizing of imperfections. Foreword to amendment A1 This document EN 583-5:2000/A1:2003 has been prepared by Technical Committee CEN/TC 138 “Non-destructive testing”, the secretariat of which is held by AFNOR. This Amendment to the European Standard EN 583-5:2000 shall b
23、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2004, and conflicting national standards shall be withdrawn at the latest by June 2004. This document has been prepared under a mandate given to CEN by the European Commissi
24、on and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland,
25、 Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Page 4 EN 583-5:2000 1 Scope This European standard specifies the general principles and techniques for the characterisation and sizing of previously detected discontinuiti
26、es in order to ensure their evaluation against applicable acceptance criteria. It is applicable, in general terms, to discontinuities in those materials and applications covered by EN 583-1:1998. 2 Normative references This European Standard incorporates by dated or undated reference, provisions fro
27、m other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendme
28、nt or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 583-1:1998, Non-destructive testing - Ultrasonic examination - Part 1: General principles. prEN 583-2:2000, Non-destructive testing - Ultrasonic examination - Part 2: Sensitivi
29、ty and range setting. EN 583-3, Non-destructive testing - Ultrasonic examination - Part 3: Transmission technique. ENV 583-6, Non-destructive testing Ultrasonic examination Part 6: Time-of-flight diffraction technique as a method for detection and sizing of imperfections EN 1713, Non-destructive tes
30、ting of welds - Ultrasonic examination - Characterization of imperfections in welds. 3 Principles of characterization of discontinuities 3.1 General Characterization of a discontinuity involves the determination of those features which are necessary for its evaluation with respect to known acceptanc
31、e 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 may take the form of either: i) the measurement of one or more dimensions (or area/volume)
32、, 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 surface or to other discontinuities; e) determination of any other parameters or characteristic
33、s that may be necessary for complete evaluation; f) assessment of probable nature, e.g. crack or inclusion, where adequate knowledge of the test object and its manufacturing history makes this feasible. Where the examination of a test object in accordance with the principles of EN 583-1:1998 yields
34、sufficient data on the discontinuity for its evaluation against the applicable acceptance criteria, no further characterisation is necessary. The techniques used for characterisation shall be specified in conjunction with the applicable acceptance criteria. Page 5 EN 583-5:2000 3.2 Requirements for
35、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 accurate the results will be. For most practical purposes a surface finish of Ra = 6,3 ?m for machined surfaces
36、 and 12,5 ?m 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 areas from which sizing is to be carried out as, in general, they are unnecessary for discontinuity detection.
37、 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/parameters of a discontinuity that are most commonly used for evaluation by the pulse echo techniques are desc
38、ribed 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 of 10.1 of EN 583-1:1998. 4.2 Location of discontinuity The location of a discontinuity is defined as its p
39、osition 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 beam angle of the probe, and measurement of the probe position and beam path length at which the maximum e
40、cho 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 direction, or with another probe angle, to ensure that the echo is not caused e.g. by a wave mode chang
41、e 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 object. The orientation can be determined by a
42、 geometrical reconstruction analogous to that described for location, with the difference that more beam angles and/or scanning directions are generally necessary than for simple location. The orientation may also be determined from observation of the scanning direction at which the maximum echo hei
43、ght is obtained. In several applications, the precise determination of the discontinuity orientation in space is not required, only the determination of the projection of the discontinuity onto one or more pre-established planes and/or sections within the test object. 4.4 Assessment of multiple indi
44、cations The method for distinguishing between single and multiple discontinuities may be based on either qualitative assessment or quantitative criteria. The qualitative determination consists of ascertaining, through the observation of the variations of the ultrasonic indications, whether or not su
45、ch indications correspond to one or more separate discontinuities. Figure 1 shows typical examples of signals from grouped discontinuities in a forging or casting. Page 6 EN 583-5:2000 Where acceptance criteria are expressed in terms of maximum allowable dimensions, preliminary quantitative measurem
46、ents shall be made in order to determine whether separate discontinuities are to be evaluated individually or collectively according to pre-established rules governing the evaluation of the group. Such rules may be based on the concentration of individual discontinuities within the group, expressed
47、in terms of the total of their lengths, areas or volumes in relation to the overall length, area or volume of the group. Alternatively, the rules may specify the minimum distance between individual discontinuities, often as a ratio of the dimensions of the adjacent discontinuities. Where a more accu
48、rate characterisation of a group of indications is required, an attempt may be made to determine whether the echoes arise from a series of closely spaced but separate discontinuities, or from a single continuous discontinuity having a number of separate reflecting facets, using the techniques descri
49、bed in annex A. 4.5 Shape of discontinuity 4.5.1 Simple classification There are a limited number of basic reflector shapes that may be identified by ultrasonic testing. In many cases evaluation against the applicable acceptance criteria only requires a relatively simple classification, described in annex B, subclause B.1. According to this, the discontinuity is classified as either: 1) point, i.e. having no significant extent in any direction; 2) elongated, i.e. having a signi
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