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1、BRITISH STANDARD BS EN 12668-2:2001 Incorporating Amendment No.1 Non-destructive testing Characterization and verification of ultrasonic examination equipment Part 2: Probes The European Standard EN 12668-2:2001, with the incorporation of amendment A1:2004, has the status of a British Standard ICS 1
2、9.100 ? BS EN 12668-2:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 July 2001 BSI 25 August 2004 ISBN 0 580 37543 9 National foreword This British Stan
3、dard is the official English language version of EN 12668-2:2001, including amendment A1:2004. It supersedes BS 4331-3:1974 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing, which has the responsibility to: A list of org
4、anizations represented on this committee can be obtained on request to its secretary. 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 Corre
5、spondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue 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
6、of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulga
7、te them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 51 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. DateComment
8、s 1529025 August 2004Modification to Clause 1 EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nation
9、al Members. Ref. No. EN 12668-2:2001 + A1:2004 E EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12668-2 May 2001 + A1 August 2004 ICS 19.100 English version Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 2: Probes (includes amendment A1:2
10、004) Essais non destructifs - Caractrisation et vrification de lappareillage de contrle par ultrasons - Partie 2: Traducteurs inclut lamendement A1:2004 Zerstrungsfreie Prfung - Charakterisierung und Verifizierung der Ultraschall-Prfausrstung - Teil 2: Prfkpfe enthlt nderung A1:2004 This European St
11、andard was approved by CEN on 16 April 2001, amendment A1 was approved by CEN on 7 June 2004. 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-dat
12、e lists and bibliographical references concerning 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 re
13、sponsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irel
14、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Page 2 EN 12668-2:2001 Contents page Foreword3 1 Scope 4 2 Normative references4 3 Terms, definitions, symbols and abbreviations4 4 General requ
15、irements for compliance.6 5 Manufacturers technical specification for probes 6 6 Test equipment 10 6.1 Electronic equipment 10 6.2 Test blocks and other equipment 10 7 Performance requirements for probes13 7.1 Physical aspects13 7.2 Radio frequency pulse shape.13 7.3 Pulse spectrum and bandwidth13 7
16、.4 Relative pulse-echo sensitivity 14 7.5 Distance-amplitude curve.14 7.6 Electrical impedance or static capacitance 15 7.7 Beam parameters for immersion probes 16 7.8 Beam parameters for contact, straight-beam, single-transducer probes20 7.9 Beam parameters for contact shear wave, angle-beam, singl
17、e-transducer probes.23 7.10 Beam parameters for contact, straight beam, dual-transducer probes.26 7.11 Beam parameters for contact, shear wave angle beam, dual-transducer probes28 Annex A (normative) Calculation of nearfield length of non-focusing probes.45 Annex B (informative) Calibration block fo
18、r angle-beam probes.48 Page 3 EN 12668-2:2001 Foreword This European Standard has been prepared by Technical Committee 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 a
19、n identical text or by endorsement, at the latest by November 2001, and conflicting national standards shall be withdrawn at the latest by November 2001. This standard consists of the following parts : EN 12668-1, Non-destructive testing - Characterization and verification of ultrasonic examination
20、equipment - Part 1: Instruments EN 12668-2, Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 2: Probes EN 12668-3, Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment Annex
21、A is normative. Annex B is informative. 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, Iceland, Ireland, Ita
22、ly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This document (EN 12668-2:2001/A1:2004) has been prepared by Technical Committee CEN/TC 138 “Non-destructive testing”, the secretariat of which is held by AFNOR. This Amendment
23、to the European Standard EN 12668-2:2001 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2005, and conflicting national standards shall be withdrawn at the latest by February 2005. According to CEN/CENELEC Inte
24、rnal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
25、rlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Page 4 EN 12668-2:2001 1 Scope This European standard covers probes used for ultrasonic non-destructive examination in the following categories with centre frequencies in the range 0,5 MHz to 15 MHz,
26、 focusing and without focusing means: a) single or dual transducer contact probes generating compressional or shear waves ; b) immersion probes. Where material dependent ultrasonic values are specified in this standard they are based on steels having an ultrasonic sound velocity of (5 920 50) m/s fo
27、r longitudinal waves, and (3 255 30) m/s for transverse waves. Periodic tests for probes are not included in this standard. Routine tests for the verification of probes using on-site methods are given in EN 12668-3. If parameters in addition to those specified in EN 12668-3 are to be verified during
28、 the probes life time, as agreed upon by the contracting parties, the methods of verification for these additional parameters should be selected from those given in this standard. The requirements of EN 12668-2:2001 do not apply to special ultrasonic thickness measuring probes. 2 Normative reference
29、s This Error! Reference source not found. incorporates by dated or undated reference, provisions from 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
30、of any of these publications apply to this Error! Reference source not found. only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 1330-4, Non destructive testing - Terminology - Part 4 : Te
31、rms used in ultrasonic testing. EN 12223, Non-destructive testing - Ultrasonic examination - Specification for calibration block No. 1. EN 12668-1, Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 1 : Instruments. EN 12668-3, Non-destructive test
32、ing - Characterization and verification of ultrasonic examination equipment - Part 3 : Combined equipment. EN 27963, Welds in steel - Calibration block No. 2 for ultrasonic examination of welds (ISO 7963:1985). EN ISO 9001, Quality systems - Model for quality assurance in design, development, produc
33、tion, installation and servicing (ISO 9001:1994). EN ISO 9002, Quality systems - Model for quality assurance in production, installation and servicing (ISO 9002:1994). 3 Terms, definitions, symbols and abbreviations For the purposes of this Error! Reference source not found. the terms and definition
34、s given in EN 1330-4 apply, together with the following terms and definitions. 3.1 dead zone depth of the zone immediately beneath the coupling surface of the work piece, in which it is not possible to detect a given reflector Page 5 EN 12668-2:2001 3.2 focal distance; (nearfield length) point on th
35、e acoustical axis where the acoustic pressure is at its maximum 3.3 horizontal plane of a sound beam with angle-beam probes the plane perpendicular to the vertical plane of sound beam including the acoustical axis in the material 3.4 operating frequency, fo; (centre frequency) in the frequency spect
36、rum of an echo the upper and lower cut-off-frequencies are determined at -6 dB compared to the maximum amplitude. With these upper and lower frequencies fu and fl the centre frequency is calculated as : luo fff= 3.5 peak-to-peak amplitude, h maximum deviation between the largest positive and the lar
37、gest negative cycles of the pulse (see Figure 1) 3.6 probe data sheet sheet giving information on probe performance which accompanies each probe. The data sheet need not necessarily be a test certificate of individual probe performance 3.7 pulse duration time interval over which the modulus of the u
38、nrectified pulse amplitude exceeds 10 % of its maximum amplitude, as shown in Figure 1 3.8 reference side reference side is the right side of an angle beam probe looking in the direction of the beam, unless otherwise specified by the manufacturer 3.9 relative bandwidth, frel ratio of the difference
39、of the upper and lower cut-off frequencies fu and fl and the centre frequency fo in percent frel = (fu - fl)/fo 100 % 3.10 squint angle for straight-beam probes, deviation between the axis of the beam and a perpendicular to the coupling surface at the emission point (see Figure 2) For angle-beam pro
40、bes angle between the sides of the probe housing and the measured beam axis, projected onto the plane of the probe face (see Figure 3) 3.11 transducer element in the probe which transforms electrical oscillations to mechanical oscillations and vice versa, in most cases piezoelectric elements 3.12 ve
41、rtical plane of a sound beam with angle-beam probes the plane in which the sound beam axis in the probe wedge and the sound beam axis in the inspected component both lie Page 6 EN 12668-2:2001 4 General requirements for compliance A probe complies with this standard if it satisfies the following con
42、ditions: a) the probe shall meet the technical requirements of this standard ; b) the probe carries a unique serial number, showing operating frequency, transducer size, angle, and wave mode, or a permanent reference number from which this information can be traced ; c) a data sheet is available for
43、 the appropriate type and series of probes which gives the performance in accordance with clause 5 of this standard. The quality of probes will be assured in one of the following ways : a) where a large number of identical probes are manufactured under a quality management system, e.g. EN ISO 9001 a
44、nd EN ISO 9002, measurements are made on a statistically selected number of probes. The manufacturer supplies a data sheet which includes the values of the specified parameters with tolerances ; b) by issuing a declaration of conformity quoting the results of measurements made on an individual probe
45、. This is suitable where only a small number of probes of each type is manufactured or where probes are required for special applications. 5 Manufacturers technical specification for probes Table 1 gives the list of information to be reported by a manufacturer in a data sheet for all probes within t
46、he scope of this standard (I = Information, M = Measurement, C = Calculation). The data sheet shall also contain information concerning the instrument used for the test, its settings and coupling conditions etc. The manufacturer shall also state the operating temperature range of the probe, and any
47、special conditions for storage or protection during transport. The supplier and the customer can agree where necessary to preclude some of the information and/or include some other details not included in Table 1. For probes intended for use at elevated temperatures the manufacturer shall provide in
48、formation on the maximum operating temperature in relation to the time of use, and the effect of temperature on the sensitivity and on the beam angle. Page 7 EN 12668-2:2001 Table 1 List of information to be given in a data sheet Category of probe Contact Immersion Straight beam Angle beam Straight
49、Information Compressional Shear Compressional Shear Compressional to be given Single Double Single Single Double Single Double Single non-f. focus. non-f. focus. non-f. non-f. focus. non-f. focus. non-f. focus. non-f. focus. non-f. focus. Manufacturers name I I I I I I I I I I I I I I I Type of probe I I I I I I I I I I I I I I I Weight M = Measurement ; C = Calculation continued Page 8 EN 12668-2:2001 Table 1 (continued) Category of probe Contact Immersi