EN 583-6:2008
(Main)Non-destructive testing - Ultrasonic examination - Part 6: Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
Non-destructive testing - Ultrasonic examination - Part 6: Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
This European Standard defines the general principles for the application of the Time-Of-Flight Diffraction (TOFD) technique for both detection and sizing of discontinuities in low alloyed carbon steel components. It could also be used for other types of materials, provided the application of the TOFD technique is performed with necessary consideration of geometry, acoustical properties of the materials and the sensitivity of the examination.
Although it is applicable, in general terms, to discontinuities in materials and applications covered by EN 583 1, it contains references to the application on welds. This approach has been chosen for reasons of clarity as to the ultrasonic probe positions and directions of scanning.
Unless otherwise specified in the referencing documents, the minimum requirements of this standard are applicable.
Unless explicitly stated otherwise, this standard is applicable to the following product classes as defined in EN 583 2:
class 1, without restrictions;
classes 2 and 3, restrictions will apply as stated in Clause 9.
The inspection of products of classes 4 and 5 will require special procedures. These are addressed in Clause 9 as well.
The techniques to use TOFD for weld inspection are described in CEN/TS 14751.
The related acceptance criteria are given in prEN 15617.
Zerstörungsfreie Prüfung - Ultraschallprüfung - Teil 6: Beugungslaufzeittechnik, eine Technik zum Auffinden und Ausmessen von Inhomogenitäten
Diese Europäische Norm legt die allgemeinen Prinzipien für die Anwendung der Beugungslaufzeittechnik (TOFD) für das Auffinden und die Größenbestimmung von Inhomogenitäten in Bauteilen aus niedrig legierten Kohlenstoffstählen fest. Das TOFD-Verfahren kann auch auf andere Werkstoffarten angewendet werden, wenn es mit der notwendigen Berücksichtigung von Geometrie, akustischen Eigenschaften der Werkstoffe sowie Nachweisempfindlichkeit der Prüfung angewendet wird.
Obwohl es im Allgemeinen bei Inhomogenitäten in Werkstoffen anwendbar ist, die in EN 583-1 behandelt werden, sind Hinweise für die Prüfung von Schweißnähten enthalten. Dieser Weg wurde zur Verdeutlichung der Ausrichtungen des Ultraschallkopfes und der Prüfrichtungen gewählt.
Soweit in Bezugsdokumenten nichts anderes festgelegt worden ist, sind die Mindestanforderungen dieser Norm anwendbar.
Wenn es nicht ausdrücklich anders angegeben wird, ist diese Norm auf folgende in EN 583-2 festgelegte Produktklassen anwendbar:
Klasse 1, ohne Einschränkungen;
Klassen 2 und 3, mit den in Abschnitt 9 angegebenen Einschränkungen.
Die Prüfung von Produkten der Klassen 4 und 5 erfordert Spezialverfahren. Auf diese wird auch in Abschnitt 9 hingewiesen.
Die Verfahren mit TOFD zur Inspektion von Schweißnähten sind in CEN/TS 14751 beschrieben.
Die entsprechenden Zulässigkeitskriterien sind in prEN 15617 festgelegt.
Essais non destructifs - Contrôle ultrasonore - Partie 6: Technique de diffraction du temps de vol utilisée comme méthode de détection et de dimensionnement des discontinuités
La présente Norme européenne définit les principes généraux pour lapplication de la technique de diffraction
du temps de vol (TOFD) pour la détection et le dimensionnement des discontinuités dans les composants en
acier au carbone faiblement allié. Elle peut également être employée pour dautres types de matériaux, à
condition que lapplication de la technique TOFD tienne compte de la géométrie, des propriétés acoustiques
des matériaux et de la sensibilité de lexamen.
Bien quelle soit applicable, en termes généraux, aux discontinuités des matériaux et aux applications
couvertes par lEN 583-1, elle contient des références aux applications sur les soudures. Cette approche a été
choisie pour des raisons de clarté en termes de position des traducteurs ultrasonores et de direction de
balayage.
Sauf indications contraires dans les documents de référence, les exigences minimales de la présente norme
sont applicables.
Sauf dispositions contraires explicites, la présente norme sapplique aux classes de produits suivantes, telles
que définies dans lEN 583-2 :
- classe 1 : sans restriction ;
- classes 2 et 3 : les restrictions de lArticle 9 sappliquent.
Lexamen des produits des classes 4 et 5 requiert des modes opératoires particuliers. Ceux-ci sont également
traités dans lArticle 9.
Les techniques dutilisation de la méthode TOFD pour lexamen des soudures sont décrites dans la
Spécification technique CEN/TS 14751.
Les critères dacceptation associés sont donnés dans le prEN 15617.
Neporušitveno preskušanje - Ultrazvočne preiskave - 6. del: Tehnika zvočne poti kot metoda za odkrivanje in ugotavljanje velikosti nezveznosti
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2009
1HSRUXãLWYHQRSUHVNXãDQMH8OWUD]YRþQHSUHLVNDYHGHO 7HKQLND]YRþQHSRWL
NRWPHWRGD]DRGNULYDQMHLQXJRWDYOMDQMHYHOLNRVWLQH]YH]QRVWL
Non-destructive testing - Ultrasonic examination - Part 6: Time-of-flight diffraction
technique as a method for detection and sizing of discontinuities
Zerstörungsfreie Prüfung - Ultraschallprüfung - Teil 6: Beugungslaufzeittechnik, eine
Technik zum Auffinden und Ausmessen von Inhomogenitäten
Essais non destructifs - Contrôle ultrasonore - Partie 6: Technique de diffraction du
temps de vol utilisée comme méthode de détection et de dimensionnement des
discontinuités
Ta slovenski standard je istoveten z: EN 583-6:2008
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 583-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2008
ICS 19.100 Supersedes ENV 583-6:2000
English Version
Non-destructive testing - Ultrasonic examination - Part 6: Time-
of-flight diffraction technique as a method for detection and
sizing of discontinuities
Essais non destructifs - Contrôle ultrasonore - Partie 6: Zerstörungsfreie Prüfung - Ultraschallprüfung - Teil 6:
Technique de diffraction du temps de vol utilisée comme Beugungslaufzeittechnik, eine Technik zum Auffinden und
méthode de détection et de dimensionnement des Ausmessen von Inhomogenitäten
discontinuités
This European Standard was approved by CEN on 29 October 2008.
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 such national
standards may be obtained on application to the CEN 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 and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 583-6:2008: E
worldwide for CEN national Members.
Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms, definitions, symbols and abbreviations .6
3.1 Terms and definitions .6
3.2 Abbreviations .6
3.3 Symbols .6
4 General .7
4.1 Principle of the technique .7
4.2 Requirements for surface condition and couplant .9
4.3 Materials and process type .9
5 Qualification of personnel .9
6 Equipment requirements .9
6.1 Ultrasonic equipment and display .9
6.2 Ultrasonic probes . 10
6.3 Scanning mechanisms . 11
7 Equipment set-up procedures . 11
7.1 General . 11
7.2 Probe choice and probe separation. 12
7.2.1 Probe selection . 12
7.2.2 Probe separation. 13
7.3 Time window setting . 13
7.4 Sensitivity setting . 13
7.5 Scan resolution setting . 14
7.6 Setting of scanning speed . 14
7.7 Checking system performance . 14
8 Interpretation and analysis of data . 14
8.1 Basic analysis of discontinuities . 14
8.1.1 General . 14
8.1.2 Characterisation of discontinuities . 14
8.1.3 Estimation of discontinuity position. 15
8.1.4 Estimation of discontinuity length . 15
8.1.5 Estimation of discontinuity depth and height . 16
8.2 Detailed analysis of discontinuities . 16
8.2.1 General . 16
8.2.2 Additional scans . 17
8.2.3 Additional algorithms . 18
9 Detection and sizing in complex geometries . 18
10 Limitations of the technique . 18
10.1 General . 18
10.2 Accuracy and resolution . 19
10.2.1 General . 19
10.2.2 Errors in the lateral position . 19
10.2.3 Timing errors . 19
10.2.4 Errors in sound velocity . 19
10.2.5 Errors in probe centre separation . 19
10.2.6 Spatial resolution . 20
10.3 Dead zones . 20
11 TOFD examination without data recording . 20
12 Test procedure . 21
13 Test report . 21
Annex A (normative) Reference blocks . 22
Bibiliography…………………………………………………………………………………………………….23
Foreword
This document (EN 583-6:2008) 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 an identical
text or by endorsement, at the latest by June 2009, and conflicting national standards shall be withdrawn at
the latest by June 2009.
Attention 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 ENV 583-6:2000.
The relevant changes from the previous edition are as follows:
− the terminology was revised;
− the references were updated.
EN 583, Non-destructive testing — Ultrasonic examination consists of the following parts:
EN 583-1, Non-destructive testing — Ultrasonic examination — Part 1: General principles
EN 583-2, Non-destructive testing — Ultrasonic examination — Part 2: Sensitivity and range setting
EN 583-3, Non-destructive testing — Ultrasonic examination — Part 3: Transmission technique
EN 583-4, Non-destructive testing — Ultrasonic examination — Part 4: Examination for discontinuities
perpendicular to the surface
EN 583-5, Non-destructive testing — Ultrasonic examination — Part 5: Characterization and sizing of
discontinuities
EN 583-6, Non-destructive testing — Ultrasonic examination — Part 6: Time-of-flight diffraction technique
as a method for detection and sizing of discontinuities
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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 the United Kingdom.
1 Scope
This European Standard defines the general principles for the application of the Time-Of-Flight Diffraction
(TOFD) technique for both detection and sizing of discontinuities in low alloyed carbon steel components. It
could also be used for other types of materials, provided the application of the TOFD technique is performed
with necessary consideration of geometry, acoustical properties of the materials and the sensitivity of the
examination.
Although it is applicable, in general terms, to discontinuities in materials and applications covered by
EN 583-1, it contains references to the application on welds. This approach has been chosen for reasons of
clarity as to the ultrasonic probe positions and directions of scanning.
Unless otherwise specified in the referencing documents, the minimum requirements of this standard are
applicable.
Unless explicitly stated otherwise, this standard is applicable to the following product classes as defined in
EN 583-2:
class 1, without restrictions;
classes 2 and 3, restrictions will apply as stated in Clause 9.
The inspection of products of classes 4 and 5 will require special procedures. These are addressed in
Clause 9 as well.
The techniques to use TOFD for weld inspection are described in CEN/TS 14751.
The related acceptance criteria are given in prEN 15617.
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
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.