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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2243-2:2005 Non-metallic materials Structural adhesives Test method Part 2: Peel metal-metal The European Standard EN 2243-2:2005 has the status of a British Standard ICS 49.025.50 ? Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 200
2、6, Uncontrolled Copy, (c) BSI BS EN 2243-2:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 17 November 2005 BSI 17 November 2005 ISBN 0 580 46840 2 National foreword This British Standard is the official English language version of The U
3、K participation in its preparation was entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (excluding textiles), to Subcommittee ACE/65/-/63, Structural adhesives, which has the responsibility to: A list of organizations represented on this subcommittee can be obta
4、ined on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility
5、of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. ai
6、d enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This d
7、ocument comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EN 2243-2:2005.
8、It supersedes BS EN 2243-2:1991 which is withdrawn. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2243-2 October 2005 ICS 49.025.50Supersedes EN 2243-2:1991 English Version Aerospace ser
9、ies - Non-metallic materials - Structural adhesives - Test method - Part 2: Peel metal-metal Srie arospatiale - Matriaux non-mtalliques - Systme dadhsifs structuraux - Mthodes dessai - Partie 2 : Essai de pelage mtal-mtal Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Strukturelle Klebstoffsyst
10、eme - Prfverfahren - Teil 2: Rollen-Schlversuch Metall-Metall This European Standard was approved by CEN on 26 September 2005. 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
11、without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other langua
12、ge made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ge
13、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Manage
14、ment Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2243-2:2005: E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 Conten
15、ts Page Foreword 3 Introduction4 1 Scope.4 2 Normative references .4 3 Definitions, symbols and abbreviations4 4 Health and safety 5 5 Principle/Technique5 6 Resources5 7 Test samples/Test pieces.5 8 Testing procedure.7 9 Expression of results8 10 Designation .8 11 Test report.8 EN 2243-2:2005 Licen
16、sed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 Foreword This European Standard (EN 2243-2:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in a
17、ccordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publicat
18、ion of an identical text or by endorsement, at the latest by April 2006, and conflicting national standards shall be withdrawn at the latest by April 2006. 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 n
19、ot be held responsible for identifying any or all such patent rights. This European Standard supersedes EN 2243-2:1991. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium,
20、Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2243-2:2005 Licensed Copy: sheffieldun
21、sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 Introduction This standard is part of the series of EN non-metallic material standards for aerospace applications. The general organization of this series is described in EN 4385. This standard is a level 3 document as
22、 defined in EN 4385. 1 Scope This standard defines the general requirements for the determination of strength of structural adhesives by testing in peel metal to metal joints, at ambient or other temperatures. This method is not suitable for adhesives having an average peeling strength of less than
23、30 N per 25 mm. 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 ISO 750
24、0-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system (ISO 7500-1:2004). EN 2090, Aerospace series Aluminium alloy AL-P2024- T3 Clad sheet and strip 0,3 mm a 6 mm.1) EN 2334, Ae
25、rospace series Chromic-sulphuric acid pickle of aluminium and aluminium alloys. EN 4385, Aerospace series Non-metallic materials General organisation of standardisation Links between types of standards.1) 3 Definitions, symbols and abbreviations 3.1 Definitions Not applicable 3.2 Symbols and abbrevi
26、ations For the purposes of this document, the following symbols and abbreviations apply. F peeling load (in newtons); W width of the specimen (in centimetres); peeling strength (in newtons/centimetres). 1) Published as AECMA Prestandard at the date of publication of this standard. EN 2243-2:2005 Lic
27、ensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 4 Health and safety This standard does not necessarily include all health and safety requirements, associated with its use. Persons using this standard shall be familiar with normal laboratory/t
28、est house practices. It is the responsibility of the user to establish satisfactory health and safety practices and to ensure conformity with any European, national or local laws/regulations. 5 Principle/Technique Not applicable 6 Resources 6.1 Apparatus All test equipment shall be calibrated at int
29、ervals not exceeding 12 months. 6.1.1 Tensile testing machine The tensile testing machine shall conform to class 1 of EN ISO 7500-1. The failing load of the test specimen shall be within 10 % and 90 % of the upper limit of the selected loading range of the machine. 6.1.2 Fixing Peeling jig, see Figu
30、re 1. 6.1.3 Recorder It shall record continuously the displacement (see Figure 3) relative to the load applied throughout the test until failure occurs. 6.2 Materials/Reagents Not applicable 6.3 Qualification of personnel Not applicable 7 Test samples/Test pieces 7.1 Materials Aluminium alloy EN 209
31、0 7.2 Surface preparation before bonding EN 2334 unless otherwise specified EN 2243-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 7.3 Bonding The application and curing of the adhesive system (adhesive and primer) shall be carried
32、 out according to the material standard unless otherwise agreed with the adhesive system manufacturer. 7.4 Dimensions of panels See Figure 2. 7.5 Storage of test panels after bonding They shall be stored under the following conditions: temperature : (23 2) C; relative humidity : (50 5) %. 7.6 Cuttin
33、g of panels and preparation of test pieces The panels shall be cut into test pieces (see Figure 2). The panels made with high temperature curing adhesives shall be cut only after a storage period of 16 hours (see note 1). NOTE 1 For batch acceptance testing, this 16 hours period can be omitted. Neve
34、rtheless, for temperature curing adhesive, care shall be taken to cut panels only when their temperature is down to ambient. Perform the cutting operation so as to avoid overheating ( 50 C) or mechanical damage to the joint (see note 2). NOTE 2 A fine-tooth, circular or band saw has been found suita
35、ble for this purpose. Cutting shall be straight and parallel. The use of cooling liquids is not permitted, unless otherwise specified. 7.7 Test pieces 7.7.1 Dimensions See Figure 2. 7.7.2 Number of specimen See material standard. 7.7.3 Identification Each test piece shall be marked to identify the p
36、anel from which it was cut and its position in the panel. EN 2243-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 8 Testing procedure 8.1 Dimensions measurement Measure the width W with an accuracy of 0,1 mm. Measure the thickness o
37、f the adhesive in the middle of the overlap at both sides of the test piece with an accuracy of 0,01 mm. The average thickness shall be determined. 8.2 Fixing See Figure 2. Install the peeling jig in the upper grip of the test machine. Insert test piece in peeling jig. Fix the non-bonded, thin end o
38、f the test piece that has been passed through the rollers in the lower grip of the test machine. 8.3 Test temperatures When the test temperature is different from ambient temperature (23 2) C, then the chamber including peeling jig shall be stabilized within the test temperature tolerance for at lea
39、st 30 minutes prior to inserting the test piece. The temperature control of the test piece shall be carried out using a thermocouple. The junction of the thermocouple shall be firmly attached to the test piece in immediate contact with the metal. It shall be shielded from direct heating. 8.4 Loading
40、 For test temperature different from ambient, and unless otherwise specified (see note), a minimum exposure time of 10 minutes at the required temperature shall be applied prior to loading. NOTE For non-ambient temperature tests, there is a requirement for the test portion of the specimen to be with
41、in the specified temperature tolerance throughout the period of loading to failure. The exposure time of 10 minutes is normally sufficient to fulfil this requirement. Nevertheless, the test laboratory may be required to prove the heat dwell concept (procedure and conditions) by means of temperature/
42、time records on dummy specimen(s) incorporating thermocouple(s) embedded in drilled hole(s) within the test portion of the specimen. These records shall be made available to demonstrate the validity of the heat dwell conditions. In this case, for tests under non-ambient conditions, the specimen shal
43、l be placed in the grips of the test machine and the temperature monitored according to the heat dwell concept previously established. When it reaches the lower (or upper, for temperature below ambient) limit of the test temperature tolerance, allow the specimen to dwell within the tolerance band fo
44、r a minimum of 3 minutes prior to loading. The test shall be completed within a maximum dwell of 10 minutes. The heat-up/dwell cycle used shall be given in the test report. The load shall be applied at a uniform jaws separation of 50 mm/min to 150 mm/min. A minimum length of 150 mm shall be peeled.
45、Record the load-displacement curve. EN 2243-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:29:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8 9 Expression of results The peeling diagram shall be evaluated as follows: The average peeling load shall be determined over a peeling stren
46、gth of 125 mm, by inserting the estimated average value into the diagram as shown in Figure 3. The results of the first 10 mm of the peel separation on the specimen as shown on the peeling diagram after the first maximum load are to be excluded from the assessment of the average value. In case of do
47、ubt, the average peeling load shall be determined by means of a planimeter. The peeling strength shall be expressed in newtons/centimeter as follows: W F = 10 Designation EXAMPLE Description block PEEL STRENGTH Identity block EN2243-2 Number of this standard 11 Test report The test report shall incl
48、ude: reference to the test method designation; the type of tensile testing machine, the speed of loading, the exposure conditions and test temperature; complete identification of the adhesive system, including the type, manufacturer, date of manufacture, batch number, material standard or specificat
49、ion number; complete identification of the metal used; detailed information about the surface preparation before bonding; application and bonding conditions including the bonding method (press, autoclave, .), pressure on the adhesive joint, heat-up rate, curing time and temperature; information about individual test piece including traceability from panel, actual dimensions, sheet thickness and bond line thickness; type of