DIN EN ISO 12996-2013 Mechanical joining - Destructive testing of joints - Specimen dimensions and test procedure for tensile shear testing of single joints (ISO 12996 2013) German.pdf

1、October 2013 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC

2、S 21.060.01!%)h“2066929www.din.deDDIN EN ISO 12996Mechanical joining Destructive testing of joints Specimen dimensions and test procedure for tensile shear testing ofsingle joints (ISO 12996:2013);English version EN ISO 12996:2013,English translation of DIN EN ISO 12996:2013-10Mechanisches Fgen Zers

3、trende Prfung von Verbindungen Probenmae und Prfverfahren fr die Scherzugprfung von Einpunktproben(ISO 12996:2013);Englische Fassung EN ISO 12996:2013,Englische bersetzung von DIN EN ISO 12996:2013-10Assemblage mcanique Essais destructifs des assemblages Dimensions des prouvettes et procdures dessai

4、 pour essais de traction-cisaillementdes jonctions uniques (ISO 12996:2013);Version anglaise EN ISO 12996:2013,Traduction anglaise de DIN EN ISO 12996:2013-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 21 pages10.13 DIN EN ISO 12996

5、:2013-10 2 A comma is used as the decimal marker. National foreword This document (EN ISO 12996:2013) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes”, Subcommittee SC 6 “Resistance welding and allied mechanical joining” (Secretariat: DIN, Germany) in collaboration w

6、ith Technical Committee CEN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Schweien und ver-wandte Verfahren (Welding and Allied Processes Standards Committee), Working Committee NA 092-00-23 AA Mecha

7、nisches Fgen. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 2768-1 DIN ISO 2728-1 ISO 7500-1 DIN EN ISO 7500-1 ISO 18592 DIN EN ISO 18592 National Annex NA (informative) Bibliography DIN ISO 2728-1, General tolerances Tolerances for l

8、inear and angular dimensions without individual tolerance indications DIN EN ISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system DIN EN ISO 18592, Resistance welding De

9、structive testing of welds Method for the fatigue testing of multi-spot-welded specimens EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12996 July 2013 ICS 25.160.40; 25.160.10 English Version Mechanical joining - Destructive testing of joints - Specimen dimensions and test procedure for t

10、ensile shear testing of single joints (ISO 12996:2013) Assemblage mcanique - Essais destructifs des assemblages -Dimensions des prouvettes et procdures dessai pour essais de traction-cisaillement des jonctions uniques Mechanisches Fgen - Zerstrende Prfung von Verbindungen - Probenmae und Prfverfahre

11、n fr die Scherzugprfung von Einpunktproben (ISO 12996:2013) This European Standard was approved by CEN on 15 June 2013. 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

12、 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 lan

13、guage made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denma

14、rk, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE

15、FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12996:2013: E(ISO 12996:2013) Contents

16、Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Terms and definitions 4 4 Test specimens and types of tests . 6 5 Test equipment and test procedure . 7 6 Failure modes and force-displacement curves . 8 7 Test report . 8 Annex A (normative) Types of joint failure . 10 Bibliography 19 2DIN E

17、N ISO 12996:2013-10EN ISO 12996:2013 (E) This document (EN ISO 12996:2013) has been prepared by Technical Committee ISO/TC 44 Welding and allied processes in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. This European Standa

18、rd shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2014, and conflicting national standards shall be withdrawn at the latest by January 2014. Attention is drawn to the possibility that some of the elements of th

19、is 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 Sta

20、ndard: 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, Slovakia, Slovenia, S

21、pain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 12996:2013 has been approved by CEN as EN ISO 12996:2013 without any modification. “”Foreword3DIN EN ISO 12996:2013-10EN ISO 12996:2013 (E)1 ScopeThis International Standard specifies the geometry of the tes

22、t specimens and the procedure for the tensile shear testing of single mechanical joints on single and multilayer specimens up to a single sheet thickness of 4,5 mm.The term sheet, as used in this International Standard, includes extrusions and cast materials.The purpose of the tensile shear test is

23、to determine the mechanical characteristics and failure modes of the joints made with the different methods.This International Standard does not apply to civil engineering applications such as metal building and steel construction which are covered by other applicable standards.2 Normative reference

24、sThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 276

25、8-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indicationsISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system

26、3 Terms and definitionsFor the purpose of this document, the following terms and definitions apply.3.1tensile shear forceFmaxmaximum force recorded in the testNote 1 to entry: If required, further characteristic data, e.g. Fp0,2(see 3.2), stiffness of the specimen c (see 3.7) or slope of the force c

27、urve, energy dissipation W (see 3.8), can be determined according to the shear diagram given in Figure 4.3.2elastic force limitFeforce where predetermined plastic or permanent displacement of the test specimen occurs3.3slippage forceFsforce at which a relative movement of the joined parts is registe

28、red4DIN EN ISO 12996:2013-10EN ISO 12996:2013 (E) 3.4displacementschange in the length of a specimen due to the application of a forceSOURCE: ISO 18592:2009,13.15 modified symbol changed; “force” replaces “load”3.5displacement at the tensile shear force FmaxsFmaxamount of displacement measured at te

29、nsile shear force Fmax3.6displacement at 0,3FmaxsF03,maxamount of displacement measured at 0,3Fmax3.7stiffness in elastic rangecratio of increase of force to the increase of elongation in the elastic range (c = F/s)3.8dissipated energyWwork or area under the force curve3.9dissipated energy up to Fma

30、xWFmaxarea under the force curve up to the point of maximum tensile shear force FmaxWFsFssFmaxmax.=d03.10dissipated energy up to 0,3FmaxWF03,maxarea under the force curve up to the point where the tensile shear force drops to 30 % of FmaxWFsFssF03003,max,max.=d Note 1 to entry: The 0,3Fmaxlimit was

31、introduced in order to reduce the time for carrying out the tensile shear test, because generally the area under the force curve after 0,3Fmaxdoes not contribute significantly to the dissipated energy.3.11dissipated energy up to fractureWfracturetotal area under the force curveWFsssfracturedfracture

32、=.05DIN EN ISO 12996:2013-10EN ISO 12996:2013 (E)3.12interference fit jointform fit jointproperty of a joint in which the transmission of external forces, in particular shear forces, is effected by geometrical elements which prevent the movement of the components relative to one anotherNote 1 to ent

33、ry: This condition is frequently achieved by the fasteners outer diameter surface having complete contact with the joints component holes.Note 2 to entry: Compare clearance fit joint (3.13).3.13clearance fit jointforce fit jointnon-interference fit jointproperty of a joint in which external forces,

34、in particular shear forces, are transmitted through friction and if the force to be transmitted is greater than the frictional force, then frictional locking is overcome and the components move relative to one anotherNote 1 to entry: This condition is frequently achieved by the fasteners outer diame

35、ter surface having incomplete contact with the joints component holes.Note 2 to entry: Compare interference fit joint (3.12).4 Test specimens and types of testsSee Figures 1 and 2.Tolerances according to ISO 2768-1 are applicable to the dimensions of the specimens given in Table 1.Keya overlap lstot

36、al length of specimen t1, t2sheet thicknessb coupon width lgspecimen length between clamps 1 shim plateslclength of clamped area ltcoupon length 2 mechanical jointFigure 1 Single-lap tensile shear test specimens6DIN EN ISO 12996:2013-10EN ISO 12996:2013 (E) Key1 shim platesFigure 2 Examples of diffe

37、rent sheet testing arrangements for tensile shear test specimensAlternative specimen size, stacking order of the sheets, the joining direction shall be agreed upon between the contracting parties and indicated in the test report.The appropriate size and tolerance of the hole is determined based on t

38、he selected fastener.Table 1 Specimen dimensionsThickness of sheet Minimum overlap Minimum speci-men widthLength of clamped areaSpecimen length between clampst1;t2a b lclgmm mm mm4,5 5d 7d 45 95NOTE Total specimen length, ls= lg+ 2lc, where the length of the clamped area is to be selected in accorda

39、nce with the testing machine being used.d Nominal diameter of the fastener or width or diameter of the clinching die.5 Test equipment and test procedureClamp the test specimen in a tensile testing machine according to ISO 7500-1, in such a manner that the clamps are at the required distance from one

40、 another. For sheet thicknesses 1 mm or where the ratio of the thicknesses is 1,4, shim plates shall be used for clamping the test specimen in the grips of the tensile testing machine to ensure force concentricity see Figure 3 b) and c). Shim plates can be joined by suitable joining method, e.g. res

41、istance spot welding, adhesive bonding.NOTE 1 If identical test results can be achieved by other measures shim plates can be omitted, e.g. by self-aligning clamps.Testing shall be carried out at room temperature, unless otherwise specified.The speed of testing is 10 mm/min or less.NOTE 2 If tests at

42、 higher speeds show that the higher testing speed has no influence on the test results, then the higher testing speed may be used for the tensile shear tests.The displacement shall be measured as the travel of the crosshead or by using extension calliper gauges, laser measuring equipment or other su

43、itable extension sensors with a defined length directly on the specimen. Measurements made using signals from the crosshead shall, if necessary, be corrected by taking the stiffness of the machine into consideration. The sensing method used and the defined length of the specimen measured shall be re

44、corded in the test report.7DIN EN ISO 12996:2013-10EN ISO 12996:2013 (E)Tests results are comparable only when the tests are carried out under identical boundary conditions.a) test arrangement without shim platesb) test arrangement with shim plates (two layers)c) test arrangement with shim plates (t

45、hree layers)Key1 shim platesFigure 3 Set-up for tensile shear test specimensFigure 4 illustrates a typical force elongation diagram for specimens with interference and clearance fit joints showing slippage. Different diagrams can be the result of different combinations of joining methods, sheet mate

46、rials and thicknesses, as well as specimen geometries.6 Failure modes and force-displacement curvesThe failure mode after tensile shear testing shall be classified according to Annex A.Figures A.1 to A.8 show classification of typical failure modes.Figure A.9 shows some forcedisplacement curves.7 Te

47、st reportThe test report shall contain the information agreed to between the contracting parties. The content may include some or all items listed below:a) a reference to this International Standard (ISO 12996:2013);b) name of the examiner and/or the examining body;c) date and signature of the exami

48、ner and/or the examining body;d) joining technology;8DIN EN ISO 12996:2013-10EN ISO 12996:2013 (E) e) joining parameters and joining equipment, fastener used;f) specimen material and material condition;g) joining direction, stacking order, location of coated sites;h) specimen dimensions;i) testing m

49、achine, test speed;j) defined length on specimen and gauge type used for displacement measurements single values, mean values and standard deviation of the characteristic values;k) individual test results, standard deviation, Coefficient of variation for the forces and the displacement;l) forcedisplacement diagrams;m) failure mode;n) any additional remarks and any deviations from this International Standard.KeyF force 1