1、Non-destructive testing - TerminologyPart 9: Terms used in acoustic emission testingBS EN 13309:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1330-9 July 2017 ICS 01.040.19; 19.100 Supersedes EN 1330-9:2009En
2、glish Version Non-destructive testing - Terminology - Part 9: Terms used in acoustic emission testing Essais non destructifs - Terminologie - Partie 9 : Termes utiliss en contrle par mission acoustique Zerstrungsfreie Prfung - Terminologie - Teil 9: Begriffe der Schallemissionsprfung This European S
3、tandard was approved by CEN on 11 May 2017. 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
4、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 version in any other language made by translation under the responsibility of a CEN member into its
5、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, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany
6、, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMIT
7、EE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1330-9:2017 ENational forewordThis British Standard is the UK implementation of EN 13309:2017. It s
8、upersedes BS EN 13309:2009, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/46, Nondestructive testing.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include al
9、l the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 92165 0ICS 01.040.19; 19.100Compliance with a British Standard cannot confer immunity from legal obligations.This
10、British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 13309:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1330-9 July 2017 ICS 01.040.19; 19.
11、100 Supersedes EN 1330-9:2009English Version Non-destructive testing - Terminology - Part 9: Terms used in acoustic emission testing Essais non destructifs - Terminologie - Partie 9 : Termes utiliss en contrle par mission acoustique Zerstrungsfreie Prfung - Terminologie - Teil 9: Begriffe der Schall
12、emissionsprfung This European Standard was approved by CEN on 11 May 2017. 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 bibliog
13、raphical 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 version in any other language made by translation under the responsib
14、ility 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republi
15、c of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE
16、NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1330-9:2017 EBS EN 13309:2017EN 1330-9:2017 (E) 2 Contents Page Euro
17、pean foreword . 3 1 Scope 4 2 Terms and definitions . 4 BS EN 13309:2017EN 1330-9:2017 (E) 3 European foreword This document (EN 1330-9:2017) 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 give
18、n the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2018, and conflicting national standards shall be withdrawn at the latest by January 2018. Attention is drawn to the possibility that some of the elements of this document may
19、be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1330-9:2009. EN 1330, Non destructive testing Terminology, is currently composed with the following parts: Part 1: List of general terms; Part 2: Terms common
20、 to the non-destructive testing methods; Part 3: Terms used in industrial radiographic testing; Part 8: Terms used in leak tightness testing; Part 9: Terms used in acoustic emission testing; Part 10: Terms used in visual testing; Part 11: Terms used in X-ray diffraction from polycrystalline and amor
21、phous materials (EN 1330-11). And EN ISO 5577 Non-destructive testing - Ultrasonic testing - Vocabulary EN ISO 12706 Non-destructive testing - Penetrant testing - Vocabulary EN ISO 12707 Non-destructive testing - Magnetic particle testing - Vocabulary EN ISO 12718 Non-destructive testing - Eddy curr
22、ent testing - Vocabulary Note 1: EN ISO 5577 was published formerly as EN 1330-4. Note 2: EN ISO12706 was published formerly as EN 1330-6. Note 3: EN ISO 12707 was published formerly as EN 1330-7. Note 4: EN ISO 12718 was published formerly as EN 1330-5. According to the CEN-CENELEC Internal Regulat
23、ions, the national standards organisations 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, Ital
24、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13309:2017EN 1330-9:2017 (E) 4 1 Scope This European Standard is concerned only with terms used specifically in acoust
25、ic emission testing (AT) and these fall into four parts: a) terms relating to the physical phenomenon; b) terms relating to the detection of the acoustic emission; c) terms relating to the measured characteristics of the signal(s); d) terms relating to acoustic emission applications. 2 Terms and def
26、initions For the purposes of this document, the following terms and definitions apply. 2.1 General 2.1.1 acoustic emission AE phenomena whereby transient elastic waves are generated by, e.g. plastic deformation, crack propagation, erosion, corrosion, impact, leakage 2.2 Terms relating to the physica
27、l phenomenon 2.2.1 acoustic emission event physical phenomenon giving rise to acoustic emission 2.2.2 acoustic emission source spatial element from where one (or more) acoustic emission event(s) originate(s) 2.2.3 acoustic emission event mechanism dynamic process or combination of processes occurrin
28、g within a material, generating acoustic emission events Note 1 to entry: AE event mechanisms can be subdivided into several categories: material and mechanical, macroscopic and microscopic, primary and secondary. 2.2.4 acoustic emission wave transient elastic wave generated by an acoustic emission
29、event 2.2.5 acoustic emission wave energy elastic wave energy released by an acoustic emission event 2.2.6 acoustic emission stimulation application of a stimulus such as force, pressure, heat, and so forth, to a test object to cause activation of acoustic emission sources BS EN 13309:2017EN 1330-9:
30、2017 (E) 5 2.2.7 event location computed location of an individual AE event using, e.g. -t measurement 2.2.8 cluster location spatial area encompassing several AE events, defining an AE cluster 2.2.9 source location spatial area comprising one or more clusters associated with an AE source and import
31、antly encompassing the true physical location of the AE events giving rise to the AE source 2.3 Terms relating to the detection of the acoustic emission 2.3.1 acoustic emission sensor device that converts the particle motion produced by an elastic wave into an electrical signal 2.3.2 acoustic emissi
32、on couplant material used at the test object-to-sensor interface to improve the transmission of acoustic emission waves across the interface 2.3.3 burst emission occurrence of acoustic emission events which can be separated in time 2.3.4 continuous emission occurrence of acoustic emission events whi
33、ch cannot be separated in time 2.3.5 acoustic emission waveguide device used for the transmission of acoustic emission waves from the test object to the acoustic emission sensor 2.3.6 acoustic emission signal electrical signal from an acoustic emission sensor converted from the acoustic emission wav
34、e Note 1 to entry: Other disturbances, e.g. EMI may affect the signal. 2.3.7 burst signal (burst) acoustic emission signal having an identifiable beginning and an end Note 1 to entry: See Figure 1. BS EN 13309:2017EN 1330-9:2017 (E) 6 Key X time s Y amplitude mV Figure 1 Burst signal 2.3.8 continuou
35、s signal acoustic emission signal having no identifiable beginning and end Note 1 to entry: See Figure 2. BS EN 13309:2017EN 1330-9:2017 (E) 7 Key X time s Y amplitude mV Figure 2 Continuous signal 2.3.9 acoustic emission noise signals that are not relevant to the purpose of the test Note 1 to entry
36、: It can have electromagnetic, thermal or mechanical origins. 2.3.10 background noise acoustic emission noise which can be rejected by raising the detection threshold or by frequency filtering 2.3.11 disturbance noise acoustic emission noise which cannot be rejected by raising the detection threshol
37、d or frequency filtering and which might be rejected by logical filtering 2.3.12 acoustic emission channel complete measurement and signal processing chain for one AE signal, including sensor, cable, preamplifier and signal processor Note 1 to entry: Some applications may utilize more than one senso
38、r per channel. BS EN 13309:2017EN 1330-9:2017 (E) 8 2.3.13 dynamic range of an acoustic emission channel ratio of the largest signal voltage (without distortion) to the peak voltage of the electronic noise Note 1 to entry: It need to be given in dB defined by: =peak signalpeak electronic noise20VDRV
39、log where DR is dynamic range. Note 2 to entry: The electronic peak noise is the maximum voltage within a defined time period without acoustic emission. 2.3.14 acoustic emission detection threshold voltage level that needs to be exceeded in order to detect an acoustic emission signal 2.4 Terms relat
40、ing to the measured acoustic emission signal(s) 2.4.1 hit detection of one burst signal on one acoustic emission channel 2.4.2 burst signal parameters specific parameters describing a burst signal (e.g. maximum amplitude, duration, rise time, energy) Note 1 to entry: See Figure 3. Key 1 burst signal
41、 rise-time 5 burst signal duration 2 burst signal maximum amplitude 6 burst signal ring down count 3 acoustic emission detection threshold 7 voltage 4 time 8 first threshold crossing Figure 3 Parameters of a burst signal BS EN 13309:2017EN 1330-9:2017 (E) 9 2.4.3 continuous signal parameters specifi
42、c parameters describing a continuous signal (e.g. ASL, RMS) 2.4.4 arrival time time when a burst signal first exceeds the detection threshold 2.4.5 delta-t -t difference between two arrival times at different channels Note 1 to entry: Usually delta-t is determined from hits on different channels res
43、ulting from the same event. 2.4.6 burst signal duration time interval between the first and the last crossing of the detection threshold by a burst signal 2.4.7 burst signal ring down count number of times a burst signal exceeds the detection threshold in one polarity during the burst signal duratio
44、n 2.4.8 burst signal maximum amplitude maximum voltage excursion within the burst signal duration Note 1 to entry: It is usually quoted in dBAE. 2.4.9 burst signal rise-time time interval between the first crossing of the detection threshold and the maximum amplitude 2.4.10 burst signal energy integ
45、ral of the squared acoustic emission signal voltage within the duration of the burst signal 2.4.11 burst signal strength integral of the rectified acoustic emission signal voltage within the duration of the burst signal 2.4.12 acoustic emission decibel scale; dBAEscale dB scale of acoustic emission
46、signal voltage U referred to the preamplifier input Note 1 to entry: It is defined by: dBAE = 20 log (U/Ur) where the reference voltage is Ur = 1 V. BS EN 13309:2017EN 1330-9:2017 (E) 10 2.4.13 average signal level ASL arithmetic average of the logarithm of the rectified AE signal over a specified p
47、eriod of time reported in dBAE2.4.14 acoustic emission data set set of measured acoustic emission signal parameters and related external parameters (e.g. load, cycle) 2.4.15 attenuation curve relationship of signal maximum amplitude vs. source distance 2.4.16 acoustic emission instrument calibrator
48、electronic waveform generator or other device which can repeatedly induce a transient signal into an acoustic emission processor for the purpose of checking and verifying the functionality of the instrument 2.5 Terms relating to acoustic emission applications 2.5.1 acoustic emission testing AT testi
49、ng of a test object during controlled stimulation using acoustic emission instrumentation to detect and analyse sources of acoustic emission 2.5.2 acoustic emission monitoring monitoring of a process or continuous surveillance of an object in operational service by acoustic emission 2.5.3 acoustic emission analysis evaluation, characterization and interpretation of acoustic emission data 2.5.4 acousto-ultrasonics non-destructive testing method that uses induced stress waves to detect and assess diffus
