1、July 2009DEUTSCHE NORM English price group 8No part of this standard 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 83.180!$XEl“1533473www.din
2、.deDDIN EN 1465Adhesives Determination of tensile lap-shear strength of bonded assembliesEnglish version of DIN EN 1465:2009-07Klebstoffe Bestimmung der Zugscherfestigkeit von berlappungsklebungenEnglische Fassung DIN EN 1465:2009-07SupersedesDIN EN 1465:1995-01www.beuth.deDocument comprises pages11
3、DIN EN 1465:2009-07 National foreword This standard has been prepared by Technical Committee CEN/TC 193 “Adhesives” (Secretariat: AENOR, Spain). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Technical Committee
4、 NA 062-04-55 AA Prfung von Konstruktions-klebstoffen, -klebverbindungen und Kernverbunden. Amendments This standard differs from DIN EN 1465:1995-01 as follows: a) “Rigid-to-rigid” (bonded assemblies) has been deleted from the title and the scope. b) Normative references have been revised. c) For t
5、he preparation of test specimens reference is made to EN 13887. d) The testing machine has been brought into line with the state of the art. e) The recommended use of unslotted panels for the preparation of specific test joints has been deleted from subclause 5.2. Previous editions DIN 53283: 1966-0
6、7, 1968-09, 1975-02, 1979-09 DIN EN 1465: 1995-01 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1465 February 2009 ICS 83.180 Supersedes EN 1465:1994 English Version Adhesives Determination of tensile lap-shear strength of bonded assemblies Adhsifs Dtermination de la rsistance au cisailleme
7、nt en traction dassemblages colls recouvrement simple Klebstoffe Bestimmung der Zugscherfestigkeit von berlappungsklebungen This European Standard was approved by CEN on 27 December 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
8、ing this EuropeanStandard 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 ver
9、sions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions. CEN members are the national standards bodies of Austria, Belgium,
10、 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 STAND
11、ARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1465:2009: EEN 1465:2009 (E) 2 Contents Page Forewor
12、d 3Introduction .41 Scope 52 Normative references 53 Principle 54 Apparatus .55 Specimens 66 Conditioning and testing atmosphere .67 Procedure .68 Expression of results 79 Test report 7Bibliography 9DIN EN 1465:2009-07 EN 1465:2009 (E) 3 Foreword This document (EN 1465:2009) has been prepared by Tec
13、hnical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. 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 August 2009, and conflicting national standards shall be withdra
14、wn at the latest by August 2009. 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. This document supersedes EN 1465:1994. According to t
15、he 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, Lithua
16、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1465:2009-07 EN 1465:2009 (E) 4 Introduction Safety statement Persons using this document should be familiar with the normal laboratory practice, if a
17、pplicable. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. ENVIRONMENTAL STATEMENT It is understoo
18、d that some of the material permitted in this standard may have negative environmental impact. As technological advantages lead to acceptable alternatives for these materials, they will be eliminated from this standard to the extent possible. At the end of the test, the user of the standard shall ta
19、ke care to carry out an appropriate disposal of the wastes, according to local regulation. DIN EN 1465:2009-07 EN 1465:2009 (E) 5 1 Scope This European Standard specifies a method for determining the tensile lap-shear strength of bonded assemblies when tested on a standard specimen and under specifi
20、ed conditions of preparation and testing. NOTE 1 This test procedure is not applicable for calculations needed for bond design in structural joints. NOTE 2 This test Test methods for the determination of tensile lap-shear strength of bonded assemblies with wood adhesives are also specified in EN 205
21、 and EN 302-1 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. EN 13887, St
22、ructural Adhesives - Guidelines for surface preparation of metals and plastics prior to adhesive bonding EN ISO 291, Plastics - Standard atmospheres for conditioning and testing (ISO 291:2005) EN ISO 527-1, Plastics - Determination of tensile properties - Part 1: General principles (ISO 527-1:1993 i
23、ncluding Corr 1:1994) EN ISO 10365, Adhesives - Designation of main failure patterns (ISO 10365:1992) 3 Principle Adhesive lap-shear bond strength is determined by stressing in shear of a single overlap joint (see Figure 1) between rigid adherends by applying to the adherends a tensile force which i
24、s parallel to the bond area and to the major axis of the specimen. The reported result is the observed force or stress at rupture. 4 Apparatus 4.1 Testing machine It shall comply with a test machine, class 1 and the response time of the machine shall be short enough not to affect the accuracy with w
25、hich the force applied at the time of rupture can be measured. NOTE The recorded force shall not differ from the true applied force by more than 1%. The machine shall be capable of applying a tensile force that increases at a steady rate. Where equipment does not allow for constant rate of load appl
26、ication, a rate of jaw separation shall be used which approximates the rate of loading (see EN ISO 527-1). It shall be provided with a suitable pair of self-aligning grips to hold the specimen. The grips and attachments shall be so constructed that they will move into alignment with the test specime
27、n as soon as the load is applied, so that the long axis of the test specimen will coincide with the direction of the applied force through the centre line of the grip assembly to avoid bending moment. Grips that operate by bolting through the adherends shall be avoided since such grips give rise to
28、undesirable stress concentration. 4.2 Jig for accurately locating adherends during bonding. DIN EN 1465:2009-07 EN 1465:2009 (E) 6 5 Specimens 5.1 Unless otherwise specified, test specimens shall conform to the form, dimensions, and alignment as shown in Figure 1. The recommended length (L) of overl
29、ap is (12,5 0,25) mm. NOTE 1 The choice of dimensions other than those shown in the Figure 1 may result in difficulties in the interpretation of results. NOTE 2 This overlap is intended for aluminium alloys and materials of similar or higher moduli of elasticity (E) and tensile yield strength. EXAMP
30、LE For AA 2024-T3 or AECMA AL-P 13 PL (T3) : E = 68 000 MPa Tensile yield strength at 0,2 % offset = 290 MPa. 5.2 The test joints may be prepared either individually or from slotted or unslotted panels (see Figure 1). Each method is equally suitable either for development or for comparative tests. 5
31、.3 The adherend surface shall be properly treated to obtain an optimum bond. Surface treatments shall be in accordance with manufacturers instructions or EN 13887 unless otherwise specified. The adhesive shall be applied and cured according to the recommendations of the manufacturer of the adhesive.
32、 In the absence of such recommendations, the procedure shall be such as to achieve an optimum bond with minimum variations. In any case, the use of a jig to ensure the correct overlap and accurate alignment of the adherends is recommended. Special care shall be taken in preparing individual specimen
33、s to ensure proper alignment and that bond thicknesses are as uniform and constant as possible. The thickness should orient itself to the intended use. A typical thickness is 0,2 mm. Thicknesses can be controlled by inserting a calibrated wire spacer or small glass spheres in the bond area. If a wir
34、e spacer is used, the wire shall lie parallel to the direction of application ot the load as this minimizes the effect of the wire on the joint. The surfaces shall be prepared according to EN 13887 unless otherwise specified. For all adherends the method used for surface preparation shall be reporte
35、d. 5.4 The number of test specimens will depend on the precision required, but reliance should not be placed on fewer than 5 observations. 6 Conditioning and testing atmosphere The test specimens shall be conditioned and tested in one of the standard laboratory atmospheres specified in EN ISO 291. 7
36、 Procedure Locate the test specimen symmetrically in the grips, with each grip (50 1) mm from the nearest edge of the overlap. A shim may be used in the grips so that the applied force will be in the plane of the adhesive bond. Operate the machine so that the stress or strain on the test joint incre
37、ases at a constant (i.e. steady) rate. This rate shall be such that the average joint will be broken in a period of (65 20) s. Record the highest force during rupture as the breaking force of that specimen. Results from test specimens that rupture in the adherend shall be discarded except for routin
38、e testing and noted in the test report. DIN EN 1465:2009-07 EN 1465:2009 (E) 7 8 Expression of results Express the results of the tests as the arithmetic mean and coefficient of variation of the breaking force in newtons or the breaking stress in megapascals of the valid test specimens. The tensile
39、lap-shear strenght, in megapascals, is calculated by dividing the breaking force, in newtons, by the shear area, in square milimeters. NOTE It is suggested that the following criteria for repeatability and reproductibility should normally be observed for test results obtained using this European Sta
40、ndard: a) the repeatibility (see ISO 3534-1) (i.e. the difference between any two breaking forces obtaines with one sample of adhesive by the same operator in a given test room or laboratory) should be less than 2,5 times the standard deviation. b) the reproductibility (see ISO 3534-1) (i.e. the dif
41、ference between the mean breaking forces obtained with one sample of adhesive on the same system in different test rooms or laboratories) should be less than 20 % of the arithmetic mean of the individual mean values. It is stressed that these criteria are offered for guidance; failure to meet one or
42、 other of the requirements does not of itself imply failure to comply with this European Standard. 9 Test report The test report shall include, at least, the following: a) reference to this European Standard (EN 1465); b) identification of the adhesive tested, including type, source, manufacturers c
43、ode number, batch or lot number, form, etc.; c) identification of adherends, including material thickness, width and surface preparation; d) description of bonding process, including method of application of adhesive, drying or precuring conditions (where applicable), and curing or setting time, tem
44、perature and pressure; e) average thickness (as precisely as praticable) of the adhesive layer after formation of the bond, as well as the method used for controling the bond thickness; f) complete description of the test specimen, including dimensions and construction of the test specimen, with nom
45、inal overlap of the joint, whether individual or of panel construction, whether slotted or unslotted panels, conditions used for cutting individual test specimens, number of test panels represented, and number of individual test specimens; g) conditioning procedure and applied parameters prior to te
46、sting, and test atmosphere; h) the rate of loading or rate of jaw separation; i) the individual breaking force or stress test results, the arithmetic mean and the coefficient of variation of the mean, together with information about the spread of results; j) type of failure according to EN ISO 10365
47、; k) result from test specimens that rupture in the adherends; l) any operating deviations or difficulties that may have affected the results. DIN EN 1465:2009-07 EN 1465:2009 (E) 8 Dimensions in millimetres Key 1 discard 4 area in test grips 2 typically (90 1) 5 shear area 3 adhesive line Figure 1 Forms and dimensions of test panels DIN EN 1465:2009-07 EN 1465:2009 (E) 9 Bibliography 1 ISO 3534-1, Statistics - Vocabulary and symbols - Part 1: General statistical terms and terms used in probability DIN EN 1465:2009-07
