EN ISO 14324:2003

SLOVENSKI STANDARD
01-junij-2004
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Resistance spot welding - Destructive tests of welds - Method for the fatigue testing of
spot welded joints (ISO 14324:2003)
Widerstandspunktschweißen - Zerstörende Prüfung von Schweißungen -
Schwingfestigkeitsprüfung von Punktschweißverbindungen (ISO 14324:2003)
Soudage par résistance - Essais destructifs des soudures - Méthode pour les essais de
fatigue sur assemblages soudés par points (ISO 14324:2003)
Ta slovenski standard je istoveten z: EN ISO 14324:2003
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 14324
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2003
ICS 25.160.40
English version
Resistance spot welding - Destructive tests of welds - Method
for the fatigue testing of spot welded joints (ISO 14324:2003)
Soudage par résistance - Essais destructifs des soudures - Widerstandspunktschweißen - Zerstörende Prüfung von
Méthode pour les essais de fatigue sur assemblages Schweißungen - Schwingfestigkeitsprüfung von
soudés par points (ISO 14324:2003) Punktschweißverbindungen (ISO 14324:2003)
This European Standard was approved by CEN on 5 June 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14324:2003 E
worldwide for CEN national Members.

CORRECTED  2003-09-24
Foreword
This document (EN ISO 14324:2003) 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 DS.
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 January 2004, and conflicting national
standards shall be withdrawn at the latest by January 2004.
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, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 14324:2003 has been approved by CEN as EN ISO 14324:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard 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 of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 14271 2000 Vickers hardness testing of resistance EN ISO 14271 2001
spot, projection and seam welds (low
load and microhardness)
ISO 14272 2000 Specimen dimensions and procedure EN ISO 14272 2001
for cross tension testing resistance
spot and embossed projection welds
ISO 14273 2000 Specimen dimensions and procedure EN ISO 14273 2001
for shear testing resistance spot, seam
and embossed projection welds
ISO 14329 2003 Resistance welding - Destructive tests EN ISO 14329 2003
of welds - Failure types and geometric
measurements for resistance spot,
seam and projection welds
INTERNATIONAL ISO
STANDARD 14324
First edition
2003-07-01
Resistance spot welding — Destructive
tests of welds — Method for the fatigue
testing of spot welded joints
Soudage par résistance — Essais destructifs des soudures — Méthode
pour les essais de fatigue sur assemblages soudés par points

Reference number
ISO 14324:2003(E)
©
ISO 2003
ISO 14324:2003(E)
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ii © ISO 2003 — All rights reserved

ISO 14324:2003(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 1
4 Test specimens . 3
4.1 Shape and dimensions. 3
4.2 Test sheets . 5
4.3 Fabrication of test specimen . 5
5 Testing machine. 5
6 Test methods. 5
6.1 Test jig. 5
6.2 Clamping of test specimens . 5
6.3 Test procedure . 8
6.4 Termination of test. 8
6.5 Determination of L-N data. 9
7 Analysis and presentation of test results. 10
8 Test report. 10

ISO 14324:2003(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.
International Standard ISO 14324 was prepared in collaboration with the International Institute of Welding
which has been approved by the ISO Council as an international standardizing body in the field of welding.
iv © ISO 2003 — All rights reserved

INTERNATIONAL STANDARD ISO 14324:2003(E)

Resistance spot welding — Destructive tests of welds —
Method for the fatigue testing of spot welded joints
1 Scope
This International Standard specifies test specimens and procedures for fatigue testing spot welds, at ambient
conditions, under repeated tensile loading to produce either shear or cross-tension loading of the spot weld, in
steel of sheet thicknesses of 0,5 mm to 6 mm. The test results are not, in general, directly applicable to the
fatigue behaviour of a spot-welded component or structure. This procedure can be used for other materials
provided proper test conditions (e.g., heating) have been determined.
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 of the referenced
document (including any amendments) applies.
ISO 669, Resistance welding — Resistance welding equipment — Mechanical and electrical requirements
ISO 14271, Vickers hardness testing of resistance spot, projection and seam welds (low load and
microhardness)
ISO 14272, Specimen dimensions and procedure for cross tension testing resistance spot and embossed
projection welds
ISO 14273, Specimen dimensions and procedure for shear testing resistance spot, seam and embossed
projection welds
ISO 14329, Resistance welding — Destructive tests of welds — Failure types and geometric measurements
for resistance spot, seam and projection welds
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
cross-tension fatigue test
fatigue test that entails the application of a repeated tensile load to the cross-tension fatigue test specimen
mounted between the jaws of the fatigue-testing machine
3.2
endurance limit
maximum load range at which the test specimen can endure a designated number of load cycles without
failing
3.3
fatigue life
N
number of cycles that can be applied at a specified load before failure occurs
ISO 14324:2003(E)
3.4
1)
fatigue limit
maximum load range at which the test specimen can endure an infinite number of load cycles
3.5
1)
L-N curve
curve drawn by plotting the load range as ordinate and the fatigue life (or fatigue endurance if the test is
terminated before failure) as abscissa, also called the load range-number of load cycles curve
NOTE It is normal practice to use logarithmic axes.
3.6
load amplitude
L
a
half of the load range
L = 0,5∆L
a
3.7
load ratio
R
minimum load divided by the maximum load
R = L /L
min max
3.8
load range
∆L
difference between the maximum and minimum loads
∆L = L − L
max min
3.9
maximum load
L
max
highest algebraic value of the repeated load
3.10
mean load
L
m
average o
...