1、November 2015 English price group 11No 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).ICS 25.160.40!%GNS“2364348www.din.d
2、eDIN ISO 16237Mechanical joining Destructive testing of joints Specimen dimensions and test procedure for cross-tension testing of singlejoints (ISO 16237:2015),English translation of DIN ISO 16237:2015-11Mechanisches Fgen Quasistatische Kopfzugprfung von mechanisch gefgten Einpunktproben Probenmae
3、und Durchfhrung (ISO 16237:2015),Englische bersetzung von DIN ISO 16237:2015-11Assemblage mcanique Essais destructifs des soudures Dimensions des prouvettes et mode opratoire dessai de traction sur prouvettes en croix (ISO 16237:2015),Traduction anglaise de DIN ISO 16237:2015-11www.beuth.deDocument
4、comprises 16 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.15 A comma is used as the decimal marker. Contents Page National foreword . 3 National Annex NA (informative) Bibliography 3 Introduction . 4 1 Scope 5 2 Normative
5、 references 5 3 Terms and definitions . 5 4 Test specimens and types of tests . 6 5 Test equipment and test procedure . 7 6 Failure mode . 8 7 Test report . 9 Annex A (normative) Types of joint failure . 10 A.1 General . 10 A.2 Typical failure modes of semi-tubular self-piercing rivet joints under c
6、ross-tension load 10 A.3 Typical failure modes of solid self-piercing rivet joints under cross-tension load . 11 A.4 Typical failure modes of clinch joints under cross-tension load 11 A.5 Typical failure modes of screwed joints under cross-tension load . 12 A.6 Typical failure modes of joints made w
7、ith self-clinching or self-piercing bolts under cross-tension load 13 A.7 Typical failure modes of blind rivet joints under cross-tension load . 14 A.8 Typical failure modes of lock bolt joints under cross-tension load . 15 Bibliography . 16 DIN ISO 16237:2015-11 2 National foreword This document (I
8、SO 16237:2015) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes”, Subcommittee SC 6 “Resistance welding and allied mechanical joining”. The responsible German body involved in its preparation was the DIN-Normenausschuss Schweien und verwandte Verfahren (DIN Standards
9、Committee Welding and Allied Processes), Working Committee NA 092-00-23 AA Mechanisches Fgen (DVS V 10.8). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent ri
10、ghts. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 2768-1 DIN ISO 2768-1 ISO 7500-1 DIN EN ISO 7500-1 ISO 14272 DIN EN ISO 14272 National Annex NA (informative) Bibliography DIN ISO 2768-1, General tolerances Tolerances for linear an
11、d angular dimensions without individual tolerance indications 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 14272, Resistance welding Destructive testing of welds
12、Specimen dimensions and procedure for cross tension testing of resistance spot and embossed projection welds DIN ISO 16237:2015-11 3 DIN EN ISO 7500-1,IntroductionThis International standard specifies the testing procedure and the specimen shapes for cross-tension testing of mechanical joints. Items
13、 to be reported after testing are the cross tension strength as well as the fracture modes, which are given as drawings as the type of joint failure. The International Standard also includes normative references, terms and definitions and an example for a test report.Mechanical joining Destructive t
14、esting of joints Specimen dimensions and test procedure for cross-tension testing of single jointsDIN ISO 16237:2015-11 4 1 ScopeThis International Standard specifies the geometry of the test specimens and the method for the cross-tension testing of single mechanical joints on single-lap test specim
15、ens 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 cross-tension test is to determine the mechanical characteristics and the failure types of the joints made with different joining methods.T
16、his 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 referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensa
17、ble 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 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance ind
18、icationsISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/ compression testing machines Verification and calibration of the force-measuring system3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1cross
19、-tension strengthCTSFmaxmaximum force, recorded in the test3.2cross-tension forceFforce, recorded in the test3.3crosshead displacementsdisplacement of the crosshead of the test equipment during the cross-tension test3.4crosshead displacement at maximum forcesFmaxdisplacement at which the maximum for
20、ce Fmaxis recordedDIN ISO 16237:2015-11 5 3.5crosshead displacement at 0,3 Fmaxs0,3Fmaxdisplacement at which 0,3Fmaxis recorded after the peak value is achieved3.6crosshead displacement at fracturesfracturedisplacement at which fracture occurs4 Test specimens and types of testsThe configuration and
21、dimensions are shown in Figure 1 and Table 1.allfDt2t1212Direction of forceKeya hole distance l specimen length t2thickness sheet 2b specimen width lffree clamping length 1 mechanical jointD hole diameters t1thickness sheet 1 2 clamping area (shaded zone)Figure 1 Cross-tension specimenDIN ISO 16237:
22、2015-11 6 Table 1 Dimensions of specimen (tolerances according to ISO 2768-1)Specimen width b5001+mmSpecimen length l150050 ,mmHole distance a (100 0,2) mmHole diametersaD20007+ ,mmFree clamping length lf5410mmaHoles may not be necessary depending on the clamping device used.5 Test equipment and tes
23、t procedureTesting is performed on a tensile testing machine, which satisfies the requirements given in ISO 7500-1. The cross-tension force and the displacement shall be simultaneously measured during testing. All tests shall be carried out at room temperature until the joint fails.If a special clam
24、ping device is used, the shape and size shall be specified and recorded.Crosshead separation rate of testing shall be (less than or) equal to 10 mm/min, and shall be kept constant during the test.The specimen deformation shall be measured as the displacement of the crosshead or by using appropriate
25、displacement sensing equipment either directly from the specimen or indirectly from the crosshead position. When using signals from the cross head position, the signal should be corrected by the stiffness of the testing machine in question. Results of measurements can only be compared when the tests
26、 are performed under identical conditions. The type of measurement and the initial length shall be noted in the test protocol.The signals for force and specimen deformation during test shall be recorded as shown in Figure 2 so that each specific value shall be recorded in the test report.NOTE 1 If r
27、equired, further characteristic data, e.g. 0,3 Fmax, can be determined according to the cross-tension diagram given in Figure 2.KeyF forces displacementFigure 2 Characteristic values of a force-displacement diagram for the cross-tension testDIN ISO 16237:2015-11 7 An example of a jig as shown in Fig
28、ure 3 can be used for the cross-tension testing of flat specimens.Dimensions in millimetres125010015012530M18517120532 1011121923 305012120Figure 3 Example of testing clampNOTE 2 It is important that no slippage occurs between the specimen and the clamping device during the test.6 Failure modeThe fa
29、ilure mode after cross-tension testing shall be classified according to Annex A.DIN ISO 16237:2015-11 8 7 Test reportThe test report shall contain at least the following information:a) a reference to this International Standard, i.e. ISO 16237:2015;b) name of the examiner and/or the examining body;c
30、) date and signature of the examiner and/or the examining body;d) joining process and description of fasteners used;e) joining parameters, type of joining equipment, and material designation and dimensions of auxiliary materials;f) material designation of the joined parts or test specimen;g) specime
31、n dimensions (including sheet thicknesses t1and t2);h) joining direction, stacking order, location of coated sides;i) type of testing equipment and settings;j) method of displacement measurement;k) individual, mean and standard deviations of the characteristic values, e.g. force, displacement, yield
32、 strength;l) diagram force-displacement path;m) failure mode;n) deviations from this International Standard.DIN ISO 16237:2015-11 9 Annex A (normative) Types of joint failureA.1 GeneralDepending on the joining technology, different types of failure can occur. Some of these are specific to the joinin
33、g technology employed and should be recorded in the test protocol. Typical failure modes for different joints are shown, by way of example, in Figures A.1 to A.7.In addition to the failure modes shown below, non-permissible sheet separation or deformation can be defined as a failure criterion by the
34、 contracting parties.A.2 Typical failure modes of semi-tubular self-piercing rivet joints under cross-tension loada) Rivet pull out from the bottom sheet16237_ed1figA1b.epsb) Pull out of the rivet headc) Rivet failureFigure A.1 Typical failure modes of semi-tubular self-piercing rivet joints under c
35、ross-tension loadDIN ISO 16237:2015-11 10 A.3 Typical failure modes of solid self-piercing rivet joints under cross-tension loada) Rivet pull out from the bottom sheetb) Pull out of the rivet headc) Rivet failureFigure A.2 Typical failure modes of solid self-piercing rivet joints under cross-tension
36、 loadA.4 Typical failure modes of clinch joints under cross-tension loada) Plug failure (pull out)b) Neck fractureDIN ISO 16237:2015-11 11 c) Neck fracture with plastic deformation (mixed mode failure)Figure A.3 Typical failure modes of clinch joints under cross-tension loadA.5 Typical failure modes
37、 of screwed joints under cross-tension loada) Thread in specimen strippedDIN ISO 16237:2015-11 12 b) Clamped part failsFigure A.4 Examples of failure modes of screwed joints under cross-tension loadA.6 Typical failure modes of joints made with self-clinching or self-piercing bolts under cross-tensio
38、n loada) Failure by hole tearing out in the weaker sheet (or component)DIN ISO 16237:2015-11 13 b) Failure due to fracture of bolt shankFigure A.5 Typical failure modes of joints made with self-clinching or self-piercing nuts and bolts under cross-tension loadA.7 Typical failure modes of blind rivet
39、 joints under cross-tension loada) Case 1: Pull out of the blind rivet headb) Case 2: Blind rivet pull out from the bottom sheetDIN ISO 16237:2015-11 14 c) Case 3: Failure of the blind rivetFigure A.6 Typical failure modes of blind rivet joints under cross-tension loadA.8 Typical failure modes of lo
40、ck bolt joints under cross-tension loada) Case 1: Pull out of the lock bolt headb) Case 2: Lock bolt collar looseningc) Case 3: Lock bolt failureFigure A.7 Typical failure modes of lock bolt joints under cross-tension loadDIN ISO 16237:2015-11 15 Bibliography1 ISO 14272, Resistance welding Destructive testing of welds Specimen dimensions and procedure for cross tension testing of resistance spot and embossed projection weldsDIN ISO 16237:2015-11 16
