EN ISO 15653:2018
(Main)Metallic materials - Method of test for the determination of quasistatic fracture toughness of welds (ISO 15653:2018)
Metallic materials - Method of test for the determination of quasistatic fracture toughness of welds (ISO 15653:2018)
ISO 15653:2018 specifies methods for determining fracture toughness in terms of stress intensity factor (K), crack tip opening displacement or CTOD (δ) and experimental equivalent of the J-integral for welds in metallic materials (J).
ISO 15653:2018 complements ISO 12135, which covers all aspects of fracture toughness testing of parent metal and which needs to be used in conjunction with this document. This document describes methods for determining point values of fracture toughness. It should not be considered a way of obtaining a valid R-curve (resistance-to-crack-extension curve). However, the specimen preparation methods described in this document could be usefully employed when determining R-curves for welds. The methods use fatigue precracked specimens which have been notched, after welding, in a specific target area in the weld. Methods are described to evaluate the suitability of a weld for notch placement within the target area, which is either within the weld metal or within the weld heat-affected zone (HAZ), and then, where appropriate, to evaluate the effectiveness of the fatigue crack in sampling these areas.
Metallische Werkstoffe - Prüfverfahren zur Bestimmung der quasistatischen Bruchzähigkeit von Schweißnähten (ISO 15653:2018)
Diese Internationale Norm legt Verfahren zur Bestimmung der Bruchzähigkeit mit dem K–Konzept (Spannungsintensitätsfaktor), dem CTOD-Konzept (Rissspitzenöffnungsverschiebung, δ) und dem J Integralkonzept (experimentelles Äquivalent für das J-Integral) für Schweißungen an metallischen Werkstoffen fest.
Diese Internationale Norm ist ein Zusatz zu ISO 12135, die alle Aspekte der Bruchzähigkeitsprüfung von Grundwerkstoffen abdeckt und in Verbindung mit diesem Dokument verwendet werden muss. Diese Internationale Norm beschreibt Verfahren für die Bestimmung von Einzelwerten der Bruchzähigkeit. Sie sollte nicht zur Bestimmung einer R-Kurve (Risswiderstandskurve) herangezogen werden. Dies betrifft nicht die in dieser Internationalen Norm beschriebene Methodik zur Probenpräparation, die auch bei der Bestimmung von R-Kurven von Schweißungen hilfreich eingesetzt werden könnte. Im vorliegenden Verfahren werden Proben mit Ermüdungsrissen verwendet, die nach dem Schweißen in einen definierten Bereich der Schweißnaht eingebracht werden. Dabei handelt es sich entweder um das Schweißgut oder die Wärmeeinflusszone (WEZ) der Schweißnaht. Es wird eine Methodik beschrieben, die die Effektivität der realisierten Kerblage für Ermüdungsrisseinbringung und Prüfung nachweist.
Matériaux métalliques - Méthode d'essai pour la détermination de la ténacité quasi statique à la rupture des soudures (ISO 15653:2018)
ISO 15653:2018 spécifie des méthodes permettant de déterminer la ténacité à la rupture en termes de facteur d'intensité de contrainte (K), d'écartement à fond de fissure, CTOD (δ) et d'équivalent expérimental de l'intégrale pour les soudures dans les matériaux métalliques (J).
ISO 15653:2018 complète l'ISO 12135, qui couvre tous les aspects des essais de ténacité à la rupture du métal de base et qui doit être utilisée conjointement avec le présent document. Ce document décrit des méthodes de détermination des valeurs ponctuelles de la ténacité à la rupture. Elle ne doit pas être considérée comme étant une méthode permettant d'obtenir une courbe R valide (résistance à la propagation de fissure). Cependant, les méthodes de préparation des éprouvettes décrites dans la présente Norme internationale peuvent être employées utilement lors de la détermination des courbes R pour les soudures. La présente méthode utilise des éprouvettes préfissurées par fatigue qui ont été entaillées, après soudage, dans une surface cible spécifique de la soudure. Les méthodes sont décrites pour évaluer l'adaptabilité d'une soudure à l'emplacement des entailles dans la surface cible qui se trouve soit dans la zone fondue soit dans la zone de soudure affectée thermiquement (ZAT) puis, en cas de besoin, pour évaluer l'efficacité de la fissuration par fatigue lors de la traversée de ces surfaces.
Kovinski materiali - Preskusna metoda za ugotavljanje kvazistatične lomne žilavosti zvarnih spojev (ISO 15653:2018)
Ta dokument določa metode za ugotavljanje lomne žilavosti glede na koeficient lomne žilavosti (K), premik vrha odprtja razpoke ali CTOD (δ) ter preskusni ekvivalent integrala J zvarnih spojev v kovinskih materialih (J).
Ta dokument dopolnjuje standard ISO 12135, ki obravnava vse vidike preskušanja lomne žilavosti glavne kovine in ga je treba uporabljati skupaj s tem dokumentom. Ta dokument opisuje metode za ugotavljanje točkovnih vrednosti lomne žilavosti. Ne sme se ga upoštevati kot način pridobivanja veljavne krivulje R (krivulja odpornosti na raztezanje razpoke). Vendar bi lahko metode za pripravo preskušancev, opisane v tem dokumentu, uporabili pri ugotavljanju krivulj R za zvarne spoje. Pri metodah se uporabljajo utrujeni napokani preskušanci, ki so po varjenju bili zarezani na določenem ciljnem mestu zvarnega spoja. Opisane so metode za oceno primernosti izvedbe zareze na ciljnem mestu zvarnega spoja, ki je na zvarni kovini ali območju, na katerega vpliva toplota (HAZ), in nato oceno učinkovitosti utrujene razpoke pri vzorčenju teh območij, kjer je to ustrezno.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2018
1DGRPHãþD
SIST EN ISO 15653:2011
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Metallic materials - Method of test for the determination of quasistatic fracture toughness
of welds (ISO 15653:2018)
Metallische Werkstoffe - Prüfverfahren zur Bestimmung der quasistatischen
Bruchzähigkeit von Schweißnähten (ISO 15653:2018)
Matériaux métalliques - Méthode d'essai pour la détermination de la ténacité quasi
statique à la rupture des soudures (ISO 15653:2018)
Ta slovenski standard je istoveten z: EN ISO 15653:2018
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 15653
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2018
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 15653:2010
English Version
Metallic materials - Method of test for the determination of
quasistatic fracture toughness of welds (ISO 15653:2018)
Matériaux métalliques - Méthode d'essai pour la Metallische Werkstoffe - Prüfverfahren zur
détermination de la ténacité quasi statique à la rupture Bestimmung der quasistatischen Bruchzähigkeit von
des soudures (ISO 15653:2018) Schweißverbindungen (ISO 15653:2018)
This European Standard was approved by CEN on 10 November 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 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 own language and notified to the CEN-CENELEC Management
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CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15653:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 15653:2018) has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" in collaboration with Technical Committee CEN/TC 121 “Welding and
allied processes” the secretariat of which is held by DIN.
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 July 2018, and conflicting national standards shall be
withdrawn at the latest by July 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 15653:2010.
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,
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 15653:2018 has been approved by CEN as EN ISO 15653:2018 without any modification.
INTERNATIONAL ISO
STANDARD 15653
Second edition
2018-01
Metallic materials — Method of test
for the determination of quasistatic
fracture toughness of welds
Matériaux métalliques — Méthode d'essai pour la détermination de la
ténacité quasi statique à la rupture des soudures
Reference number
ISO 15653:2018(E)
©
ISO 2018
ISO 15653:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2018 – All rights reserved
ISO 15653:2018(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 3
5 Principle . 3
6 Choice of specimen design, specimen orientation and notch location .4
6.1 Classification of target area for notching . 4
6.2 Specimen design . 4
6.3 Specimen and crack plane orientation . 4
7 Pre-machining metallography. 8
7.1 Microstructural assessment of macrosections . 8
7.2 Additional requirements for heat-affected zone tests . 9
8 Machining. 9
8.1 Tolerances on specimen dimensions . 9
8.2 Notch placement for through-thickness notched specimens .10
8.3 Notch placement for surface-notched specimens.10
8.4 Notch machining .11
9 Specimen preparation .16
9.1 Fatigue precracking .16
9.2 Side grooving .16
10 Test apparatus, requirements and test procedure .16
11 Post-test metallography .16
11.1 General .16
11.2 Through-thickness notched specimens .17
11.2.1 Sectioning .17
11.2.2 Assessment .17
11.3 Surface-notched specimens .17
11.3.1 Sectioning .17
11.3.2 Assessment .17
11.4 Assessment of pop-in .17
12 Post-test analysis .20
12.1 Choice of tensile properties .20
12.2 Determination of fracture toughness .21
12.2.1 K .
Ic 21
12.2.2 δ . 21
12.2.3 J . 22
12.2.4 Shallow-notched bend specimen .22
12.3 Qualification requirements .23
12.3.1 General.23
12.3.2 Weld-width-to-crack-ligament ratio .23
12.3.3 Crack front straightness .23
12.3.4 Symbols used to identify fracture toughness values .25
12.3.5 Through-thickness notched specimens .25
12.3.6 Surface-notched specimens .25
13 Test report .26
Annex A (informative) Examples of notch locations .
...
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