1、BS EN ISO18592:2009ICS 25.160.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDResistance welding Destructive testing ofwelds Method for thefatigue testing of multi-spot-welded specimens(ISO 18592:2009)This British Standardwas published under theauthority of th
2、e StandardsPolicy and StrategyCommittee on 31 January2010 BSI 2010ISBN 978 0 580 57544 0Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 18592:2009National forewordThis British Standard is the UK implementation of EN ISO 18592:2009.The UK participation in its preparation was entr
3、usted to TechnicalCommittee WEE/29, Resistance welding.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance
4、 with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 18592 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 1859
5、2:2009) Soudage par rsistance - Essais destructifs des soudures -Mthode dessai de fatigue des chantillons souds par points multiples (ISO 18592:2009) Widerstandsschweien - Zerstrende Prfung von Schweiverbindungen - Verfahren zur Schwingfestigkeitsprfung von geschweiten Mehrpunktproben (ISO 18592:200
6、9) 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
7、 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 m
8、ember 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, Ital
9、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000
10、 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 18592:2009: EBS EN ISO 18592:2009EN ISO 18592:2009 (E) 3 Foreword This document (EN ISO 18592:2009) has been prepared by Technical Committee ISO/TC 44 “Welding and
11、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 conflictin
12、g 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 C
13、EN/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,
14、 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. BS EN ISO 18592:2009ISO 18592:2009(E) ISO
15、 2009 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references2 3 Terms and definitions .3 4 Symbols and abbreviated terms 5 5 Specimens7 5.1 General .7 5.2 Selection of suitable specimens8 5.3 Specimen fabrication 10 5.4 Specimen geometry 11 6 Requirements for
16、 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-specimens24 8.4 Fatigue test 24 8.5 Test termination.25 9 Test report27 9.1 Basic information 27 9
17、.2 Presentation of fatigue test results .28 Annex A (informative) Calibration specimen for verifying the load distribution in H-specimens30 Annex B (informative) Hydraulic grips for the fatigue testing of H-specimens31 Annex C (informative) Grip for the fatigue testing of H-specimens.32 Annex D (inf
18、ormative) Flow chart Data acquisition 33 Bibliography36 BS EN ISO 18592:2009ISO 18592:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internation
19、al 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,
20、 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 comm
21、ittees 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 p
22、ossibility 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
23、 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. BS EN ISO 18592:2009ISO 18592:2009(
24、E) ISO 2009 All rights reserved vIntroduction 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
25、 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 di
26、fferent 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
27、 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
28、 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 failu
29、re 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
30、secondary load types resulting from varying degrees of local deformation due to the differences in the local stiffness in the area of the joints. The local deformation, responsible for the magnitude of the peel component, for example, is a function of the local stiffness, increasing with a decrease
31、in stiffness. This International Standard offers a framework within which the different specimens, described herein, can be modified such that design specifics and production constraints, e.g. flange width and overlap, weld nugget size, pitch, bending radius, and sub-standard welds, can be given due
32、 consideration. This helps towards enhancing the significance of the results very appreciably. Note that if welds could be subjected to identical amplitudes of shear and peel loads, their lives would differ by a factor of approximately 104(References 8 to 11). This explains the necessity to use diff
33、erent specimens for the simulation of different load types. Conformance tests on real components serve the verification of design calculations and are necessary for the qualification of structures. It is therefore necessary to maintain their number at an absolute minimum. BS EN ISO 18592:2009BS EN I
34、SO 18592:2009INTERNATIONAL STANDARD ISO 18592:2009(E) ISO 2009 All rights reserved 1Resistance welding Destructive testing of welds Method for the fatigue testing of multi-spot-welded specimens 1 Scope This International Standard specifies test specimens and procedures for performing constant load a
35、mplitude 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 this International Standard to larger thicknesses can be limited by mechanical properties such as yield stre
36、ngth 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)
37、 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
38、load distributions can be realized are: 1) defined uniform load distribution: i) H-specimens for shear- and peel-loading, (welds subjected to uniform shear or peel loading transverse to the joint line), ii) single- and double-hat specimens subjected to four-point bending (spot welds subjected to uni
39、form shear load in the direction of the row of welds), iii) double-disc specimen under torsion (spot welds subjected to uniform shear load), iv) double-disc specimen under tensile load (spot welds subjected to uniform peel load), v) double-disc specimen under combined torsion and tensile loading, vi
40、) flat multi-spot specimens using defined grips; 2) defined non-uniform load distribution: i) H-specimens with modified grips, ii) modified H-specimens with standard grips, iii) modified H-specimens with modified grips, BS EN ISO 18592:2009ISO 18592:2009(E) 2 ISO 2009 All rights reservediv) flat mul
41、ti-spot specimens with modified grips, v) modified multi-spot flat specimens with standard grips, vi) modified multi-spot flat specimens with modified grips; 3) defined combinations of shear-, peel- and normal-tension loads: i) the KS-2 specimen, ii) the double disc specimen; 4) spot welds subjected
42、 to undefined non-uniform load distribution single-hat, double-hat and similar closed hollow sections under torsion, 3-point bending and/or internal pressure. The specimens and tests referred to under 4) are not dealt with further in this International Standard, because the results obtained with the
43、se 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 comp
44、onents 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
45、 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 appl
46、ication to design only when the loading conditions in service and the stiffness of the design in the joint area are identical. NOTE Specimens are modified to take into consideration constraints or specific demands posed by design, e.g. smaller than standard overlap, smaller or larger than standard n
47、ugget diameter, and specific load distribution, thus enhancing the value of the test results for the design engineer. 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 re
48、ferences, the latest edition of the referenced document (including any amendments) applies. ISO 14273, Specimen dimensions and procedure for shear testing resistance spot, seam and embossed projection welds ISO 14324, Resistance spot welding Destructive tests of welds Method for the fatigue testing
49、of spot welded joints ISO 15609-5:2004, Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 5: Resistance welding BS EN ISO 18592:2009ISO 18592:2009(E) ISO 2009 All rights reserved 33 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 14324 and the following apply. 3.1 repeated load F load varying simply and periodically between constant maximum and minimum values NOTE Adapted from ISO 14324:2003, 3.12. 3.2 maximum load
