EN ISO 18592:2009
(Main)Resistance welding - Destructive testing of welds - Method for the fatigue testing of multi-spot-welded specimens (ISO 18592:2009)
Resistance welding - Destructive testing of welds - Method for the fatigue testing of multi-spot-welded specimens (ISO 18592:2009)
ISO 18592:2009 specifies test specimens and procedures for performing constant load amplitude fatigue tests on multi-spot-welded and multi-axial specimens in the thickness range from 0,5 mm to 5 mm at room temperature and a relative humidity of max. 80 %. The applicability of ISO 18592:2009 to larger thicknesses can be limited by mechanical properties such as yield strength and formability of the specimen material. The thickness range for advanced high strength steels (AHSs) is generally below 3,0 mm. Greater thicknesses apply for aluminium alloys, for example.
Depending on the specimen used, it is possible from the results to evaluate the fatigue behaviour of: a) spot welds subjected to defined uniform load distribution; b) spot welds subjected to defined non-uniform load distribution; c) spot welds subjected to different defined combinations of shear-, peel-and normal-tension loads; and d) the tested specimen.
Multi-spot specimens with which the different load distributions can be realized are: 1) defined uniform load distribution; 2) defined non-uniform load distribution; 3) defined combinations of shear-, peel- and normal-tension loads; 4) spot welds subjected to undefined non-uniform load distribution.
The specimens and tests referred to under 4) are not dealt with further in ISO 18592:2009, because the results obtained with these specimens are specific to the components as tested and may not be generalized or used for deriving data pertaining to the load-carrying behaviour of the welds. Results obtained with such tests are suitable for comparing the mechanical properties of the tested components with those of similar components tested in the same manner. These tests are, however, not suitable for evaluating or comparing the load-carrying properties of the welds.
The test results of the fatigue tests obtained with component like specimens are suitable for deriving criteria for the selection of materials and thickness combinations for structures and components subjected to cyclic loading. This statement is especially relevant for results obtained with specimens with boundary conditions, i.e. a local stiffness similar to that of the structure in question. The results of a fatigue test are suitable for direct application to design only when the loading conditions in service and the stiffness of the design in the joint area are identical.
Widerstandsschweißen - Zerstörende Prüfung von Schweißverbindungen - Verfahren zur Schwingfestigkeitsprüfung von Mehrpunktproben (ISO 18592:2009)
Diese Norm legt Proben und Vorgehensweisen für die Durchführung von Schwingfestigkeitsversuchen mit
konstanter Lastamplitude an geschweißten Mehrpunkt- und multiaxialen Proben im Dickenbereich von
0,5 mm bis 5 mm bei Raumtemperatur und einer relativen Luftfeuchtigkeit von höchstens 80 % fest.
Die Anwendbarkeit dieser Norm für größere Dicken kann durch die mechanischen Eigenschaften wie Streckgrenze
und Verformungsfähigkeit des Probenwerkstoffs eingeschränkt sein. Der Dickenbereich für hochfeste
Stähle (AHSS — Advanced High Strength Steels) liegt im Allgemeinen unter 3,0 mm. Größere Dicken sind bei
Aluminiumlegierungen anwendbar.
Je nach verwendeter Probenform erlauben die Prüfergebnisse eine Bewertung des Tragverhaltens von:
a) Verbindungen bei denen eine definierte gleichmäßige Spannungsverteilung vorliegt;
b) Verbindungen bei denen eine definierte ungleichmäßige Spannungsverteilung vorliegt;
c) Verbindungen unter verschiedenen definierten Kombinationen von Scher-, Schäl- und Kopfzugbeanspruchungen
d) und des geprüften Prüfkörpers;
Soudage par résistance - Essais destructifs des soudures - Méthode d'essai de fatigue des échantillons soudés par points multiples (ISO 18592:2009)
L'ISO 18592:2009 spécifie les éprouvettes et les procédures d'essai applicables aux essais de fatigue à amplitude d'effort constante, ces essais étant effectués sur des éprouvettes soudées par points multiples et à axes multiples, dans la gamme d'épaisseurs comprise entre 0,5 mm et 5 mm à la température ambiante et à une humidité relative de 80 % max. L'applicabilité de l'ISO 18592:2009 à des épaisseurs plus importantes peut être limitée par les propriétés mécaniques telles que la limite élastique et la formabilité du matériau constitutif des éprouvettes. La gamme d'épaisseurs pour les aciers à haute résistance mécanique (AHSS) est généralement inférieure à 3,0 mm. Des épaisseurs plus grandes, par exemple pour les alliages d'aluminium, sont admises.
Selon l'éprouvette utilisée, les résultats permettent d'évaluer le comportement à la fatigue: a) des soudures par points soumises à une répartition définie uniforme des efforts; b) des soudures par points soumises à une répartition définie non uniforme des efforts; c) des soudures par points soumises à différentes combinaisons définies d'efforts de cisaillement, d'arrachement et de traction normale; et d) de l'éprouvette soumise à essai.
Les éprouvettes soudées par points multiples avec lesquelles les différentes répartitions des efforts peuvent être effectuées sont les suivantes: 1) répartition des efforts uniforme définie; 2) répartition des efforts non uniforme définie; 3) combinaisons définies d'efforts de cisaillement, d'arrachement et de traction normale; 4) soudures par points soumises à une répartition non uniforme non définie des efforts.
Les éprouvettes et essais auxquels il est fait référence à l'alinéa 4) ne sont pas traitées davantage dans l'ISO 18592:2009, car les résultats obtenus avec ces éprouvettes sont spécifiques aux composants soumis à essai et ne peuvent pas être généralisés ou utilisés pour calculer la capacité de transmission d'effort des assemblages soudés. Les résultats obtenus avec ces essais conviennent pour comparer les propriétés mécaniques des composants soumis à essai avec les propriétés mécaniques de composants similaires soumis aux mêmes essais. Ces essais, toutefois, ne conviennent pas pour évaluer ou comparer les capacités d'efforts des soudures.
Les résultats des essais de fatigue obtenus avec les éprouvettes semblables aux composants conviennent pour déduire des critères de sélection des matériaux et des combinaisons d'épaisseur pour les structures et les composants soumis à des efforts cycliques. Cette indication est particulièrement pertinente pour les résultats obtenus avec des éprouvettes dans des conditions aux limites, c'est-à-dire dont la rigidité locale est similaire à celle de la structure concernée. Les résultats d'un essai de fatigue conviennent à une application directe à la conception uniquement lorsque les conditions d'effort en service et la rigidité de la conception dans la zone d'assemblage sont identiques.
Uporovno varjenje - Porušitveno preskušanje zvarnih spojev - Metoda preskušanja trdnosti večtočkovno varjenih vzorcev (ISO 18592:2009)
Ta mednarodni standard določa preskusne vzorce in postopke za izvedbo preskusov trdnosti s stalno amplitudo obremenitve na večtočkovno varjenih in mnogoosnih vzorcih z razponom debeline med 0,5 mm in 5 mm pri sobni temperaturi in največ 80% relativni vlagi. Veljavnost tega mednarodnega standarda pri večjih debelinah omejujejo mehanske lastnosti, kot sta meja prožnosti in preoblikovalnost materiala vzorca. Razpon debeline za visokotrdnostno jekleno pločevino (AHSS) je v splošnem pod 3,0 mm. Večja debelina velja na primer za aluminijeve zlitine. Glede na uporabljeni vzorec se iz rezultatov lahko ovrednoti utrujanje: a) točkovnih zvarov, na katere deluje enakomerna razporeditev obremenitve; b) točkovnih zvarov, na katere deluje definirana neenakomerna razporeditev obremenitve; c) točkovnih zvarov, na katere delujejo različne kombinacije strižnih, pretržnih in normalnih nateznih obremenitev; in d) preskusnega vzorca. Večtočkovni vzorci, pri katerih lahko prihaja do različnih razporeditev obremenitve, so: 1) z definirano enakomerno razporeditvijo obremenitve: i) H-vzorci za strižno in pretržno obremenitev, (zvari, na katere deluje enakomerna strižna obremenitev, so prečni na linijo spoja), ii) vzorci v obliki enojnega ali dvojnega valja, na katere deluje štiritočkovno upogibanje (točkovni zvari, na katere deluje enakomerna strižna obremenitev v smeri vrste zvarov), iii) vzorec iz dvojnih diskov pod torzijo (točkovni zvari, na katere deluje enakomerna strižna obremenitev), iv) vzorec iz dvojnih diskov pod natezno obremenitvijo (točkovni zvari, na katere deluje enakomerna pretržna obremenitev), v) vzorec iz dvojnih diskov pod kombinirano torzijo in natezno obremenitvijo, vi) ploščati večtočkovni vzorci z definiranimi ročaji; 2) z definirano neenakomerno razporeditvijo obremenitve: i) H-vzorci s spremenjenimi ročaji, ii) spremenjeni H-vzorci s standardnimi ročaji, iii) spremenjeni H-vzorci s spremenjenimi ročaji, iv) ploščati večtočkovni vzorci s spremenjenimi ročaji, v) spremenjeni večtočkovni ploščati vzorci s standardnimi ročaji, vi) spremenjeni večtočkovni ploščati vzorci s spremenjenimi vzorci; 3) z definiranimi kombinacijami strižnih, pretržnih in normalnih nateznih obremenitev: i) vzorec KS-2, ii) vzorec z dvojnim diskom; 4) točkovni zvari, na katere deluje nedefinirana neenakomerna razporeditev obremenitve – enovaljni, dvovaljni in podobni zaprti votli deli pod torzijo, tritočkovnim upogibanjem in/ali notranjim tlakom. Vzorci in preskusi, navedeni pod 4), v tem mednarodnem standardu niso podrobneje obravnavani, ker so rezultati, pridobljeni s temi vzorci, značilni za preskušane komponente in jih ni mogoče posplošiti ali uporabiti za izpeljavo podatkov, ki veljajo za nosilnost zvarov. Rezultati, pridobljeni s takšnimi preskusi, so primerni za primerjavo mehanskih lastnosti preskušanih komponent in podobnih komponent, preskušanih na enak način. Ti preskusi niso primerni za vrednotenje ali primerjavo nosilnosti zvarov. Rezultati preskušanja trdnosti, pridobljeni z vzorci, podobnimi komponentam, so primerni za izpeljavo meril za izbor kombinacij materialov in debelin za konstrukcije in komponente, na katere deluje ciklična obremenitev. Ta navedba velja še zlasti za rezultate, pridobljene z vzorci z mejnimi pogoji, npr. z lokalno togostjo, ki je podobna togosti obravnavane konstrukcije. Rezultati preskušanja trdnosti so primerni za neposredno uporabo pri snovanju le, kadar so pogoji delovnih obremenitev in togost modela na spojih identični.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2010
8SRURYQRYDUMHQMH3RUXãLWYHQRSUHVNXãDQMH]YDUQLKVSRMHY0HWRGDSUHVNXãDQMD
WUGQRVWLYHþWRþNRYQRYDUMHQLKY]RUFHY ,62
Resistance welding - Destructive testing of welds - Method for the fatigue testing of multi-
spot-welded specimens (ISO 18592:2009)
Widerstandsschweißen - Zerstörende Prüfung von Schweißverbindungen - Verfahren zur
Schwingfestigkeitsprüfung von geschweißten Mehrpunktproben (ISO 18592:2009)
Soudage par résistance - Essais destructifs des soudures - Méthode d'essai de fatigue
des échantillons soudés par points multiples (ISO 18592:2009)
Ta slovenski standard je istoveten z: EN ISO 18592:2009
ICS:
25.160.40 Varjeni spoji in vari Welded joints
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 18592
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2009
ICS 25.160.40
English Version
Resistance welding - Destructive testing of welds - Method for
the fatigue testing of multi-spot-welded specimens (ISO
18592:2009)
Soudage par résistance - Essais destructifs des soudures - Widerstandsschweißen - Zerstörende Prüfung von
Méthode d'essai de fatigue des échantillons soudés par Schweißverbindungen - Verfahren zur
points multiples (ISO 18592:2009) Schwingfestigkeitsprüfung von geschweißten
Mehrpunktproben (ISO 18592:2009)
This European Standard was approved by CEN on 18 November 2009.
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: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18592:2009: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 18592:2009) has been prepared by Technical Committee ISO/TC 44 "Welding and
allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding”, 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 June 2010, and conflicting national standards shall be withdrawn at
the latest by June 2010.
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.
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.
Endorsement notice
The text of ISO 18592:2009 has been approved by CEN as a EN ISO 18592:2009 without any modification.
INTERNATIONAL ISO
STANDARD 18592
First edition
2009-12-15
Resistance welding — Destructive testing
of welds — Method for the fatigue testing
of multi-spot-welded specimens
Soudage par résistance — Essais destructifs des soudures — Méthode
d'essai de fatigue des échantillons soudés par points multiples
Reference number
ISO 18592:2009(E)
©
ISO 2009
ISO 18592:2009(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2009
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2009 – All rights reserved
ISO 18592:2009(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.2
3 Terms and definitions .3
4 Symbols and abbreviated terms .5
5 Specimens.7
5.1 General .7
5.2 Selection of suitable specimens.8
5.3 Specimen fabrication .10
5.4 Specimen geometry .11
6 Requirements for testing machine .21
7 Specimen grips and alignment .22
7.1 General .22
7.2 Shear and peel loading .23
8 Test procedure.24
8.1 General .24
8.2 Mounting the H-specimens.24
8.3 Clamping procedure for the H-specimens.24
8.4 Fatigue test .24
8.5 Test termination.25
9 Test report.27
9.1 Basic information .27
9.2 Presentation of fatigue test results .28
Annex A (informative) Calibration specimen for verifying the load distribution in H-specimens.30
Annex B (informative) Hydraulic grips for the fatigue testing of H-specimens.31
Annex C (informative) Grip for the fatigue testing of H-specimens.32
Annex D (informative) Flow chart — Data acquisition .33
Bibliography.36
ISO 18592:2009(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 18592 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 6, Resistance welding and allied mechanical joining.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 6 via your national standards body. A complete listing of these bodies can be
found at www.iso.org.
iv © ISO 2009 – All rights reserved
ISO 18592:2009(E)
Introduction
This International Standard has been prepared because welding engineers (and most design engineers) are
not familiar with fatigue testing and the influence of factors such as load type (e.g. shear load, peel load), and
failure criteria.
Tests are used to investigate the existence of specific properties and their qualitative and quantitative
evaluation. Fatigue tests, in general, are used to investigate the behaviour of structures and components
subjected to cyclic loads. For welded components, fatigue tests are used to determine the influence of
different parameters such as joining methods, pitch, material thickness and material combinations type of load
(e.g. shear load, peel load), overlap, location of weld on flange, edge distance, loading condition (e.g. quasi-
static, cyclic, load ratio R), and the combination of environment and corrosion on the fatigue behaviour (life) of
spot welds and/or specimens subjected to various types of loads. Fatigue tests should, if their results are to be
used for design purposes, as far as possible, take into consideration such boundary conditions as
encountered in a real life environment. This applies to load types, load amplitudes, and load ratios as well as
load distributions and failure criteria (Reference [7]).
The test specimen selected for the fatigue test should simulate, as closely as possible, the loads and the
boundary conditions as they are encountered in service. Furthermore, the failure criterion used should
conform to the application in hand. Although the type of primary load is identical in some specimens, e.g.
shear load in flat multi-spot specimens, shear H-specimens, KS-2 specimens, and double disc specimens, the
results of fatigue tests differ significantly because of the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.