1、BRITISH STANDARD AEROSPACE SERIESBS EN 2243-5:2005Non-metallic materials Structural adhesives Test method Part 5: Ageing testsThe European Standard EN 2243-5:2005 has the status of a British StandardICS 49.025.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g4
2、4g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2243-5:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 17 November 2005 BSI 17 November 2005ISBN 0 580 46839 9National f
3、orewordThis British Standard is the official English language version of EN 2243-5:2005. It supersedes BS EN 2243-5:1992 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (excluding textiles), to Subc
4、ommittee ACE/65/-/63, Structural adhesives, which has the responsibility to:A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document m
5、ay be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility 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
6、are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, an
7、d keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document 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
8、 in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2243-5October 2005ICS 49.025.50 Supersedes EN 2243-5:1992 English VersionAerospace series - Non-metallic materials - Structural adh
9、esives- Test method - Part 5: Ageing testsSrie arospatiale - Matriaux non-mtalliques - Systmedadhsifs structuraux - Mthodes dessai - Partie 5 :Essais de vieillissementLuft- und Raumfahrt - Nichtmetallische Werkstoffe -Strukturelle Klebstoffsysteme - Prfverfahren - Teil 5:AlterungsversucheThis Europe
10、an 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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references con
11、cerning such nationalstandards 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 language made by translationunder the responsibility of a CEN member into its own l
12、anguage and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M
13、alta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation i
14、n any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2243-5:2005: E2 Contents 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 piece
15、s.6 8 Testing procedure.7 9 Expression of results9 10 Designation .11 11 Test report .11 EN 2243-5:20053 Foreword This European Standard (EN 2243-5:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in
16、accordance 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 publica
17、tion 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
18、not be held responsible for identifying any or all such patent rights. This European Standard supersedes EN 2243-5:1992. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium,
19、 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 2243-5:20054 Introduction This standar
20、d 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 defined in EN 4385. 1 Scope This standard defines the general requirements for the determination of resist
21、ance of structural adhesives and adhesive bonded joints against environmental influences. 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
22、 of the referenced document (including any amendments) applies. ISO 3768, Metallic coatings Neutral salt spray test (NSS test). EN 2243-1, Structural adhesives Test methods Part 1 Single lap shear Aerospace series.1)EN 2243-2, Aerospace series Non-metallic materials Structural adhesives Test method
23、Part 2: Peel metal-metal. EN 2243-6, Aerospace series Non-metallic materials Structural adhesives Test method Part 6: Determination of shear stress and shear strain. EN 2379, Aerospace series Fluids for assessment of non-metallic materials.2) EN 2743, Aerospace series Fibre reinforced plastics Stand
24、ard procedures for conditioning prior to testing unaged materials. EN 4385, Aerospace series Non-metallic materials General organisation of standardisation Links between types of standards.2)3 Definitions, symbols and abbreviations 3.1 Definitions Not applicable 1) Published as AECMA Standard at the
25、 date of publication of this standard. 2) Published as AECMA Prestandard at the date of publication of this standard. EN 2243-5:20055 3.2 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. average shear stress; F average peel strength; Geavera
26、ge elastic shear modulus; A bond line area; R ,RFreduction percentage in shear strength; RGreduction percentage in shear modulus; Aapercentage attacked area. 4 Health and safety This standard does not necessarily include all health and safety requirements, associated with its use. Persons using this
27、 standard shall be familiar with normal laboratory/test 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 App
28、aratus All test equipment shall be calibrated at intervals not exceeding 12 months. 6.1.1 Humidity cabinet For relative humidity test exposures, a humidity cabinet is required in which the exposure zone can be maintained at (50 3) C or (70 3) C and a minimum of 95 % relative humidity. It shall be po
29、ssible to record the temperature continuously. To obtain and to maintain the humidity, only freshly distilled water shall be used. Airflow is allowed. 6.1.2 Saltspray cabinet A saltspray cabinet is required, in accordance with ISO 3768. EN 2243-5:20056 6.1.3 Fluid containers For fluid immersion test
30、s, containers are required of sufficient size, capable of maintaining a fluid temperature within the required range (see Table 1), independent of the location of the test panel in the fluid. It shall be possible to record the temperature continuously. 6.2 Materials/Reagents Test fluids in accordance
31、 with EN 2379 (see Table 1). 6.3 Qualification of personnel Not applicable 7 Test samples/Test pieces 7.1 Materials According to the relevant test method (see Table 1). 7.2 Surface preparation before bonding According to the relevant test method (see Table 1). 7.3 Bonding According to the relevant t
32、est method (see Table 1). 7.4 Dimensions of panels According to the relevant test method (see Table 1). 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 Cutting of panels and preparation of test pi
33、eces According to the relevant test method (see Table 1). NOTE For salt spray testing, the test panels shall be protected against corrosion before cutting to test pieces. 7.7 Test pieces 7.7.1 Dimensions According to the relevant test method (see Table 1). EN 2243-5:20057 7.7.2 Number of specimens A
34、ccording to the relevant test method (see Table 1). From each test panel, a minimum of two test pieces shall be used as reference test pieces (see 9). 7.7.3 Identification Each test piece shall be marked to identify the panel from which it was cut and its position in the panel. 8 Testing procedure 8
35、.1 Ageing See Table 1. Table 1 Environment Temperature (C) Time (days) Code Clause ref. Type of test 30 A11 60 A12 Relative humidity 95 % to 100 % 50 3 90 A13 EN 2243-1 30 A21 60 A22 Relative humidity 95% to 100 % 50 3 90 A23 EN 2243-2 30 A31 60 A32 Relative humidity 95 % to 100 % 50 3 90 A33 EN 224
36、3-6 10 B11 20 B12 Relative humidity 95 % to 100 % 70 3 30 B13 EN 2243-1 10 B21 20 B22 Relative humidity 95 % to 100 % 70 3 30 B23 EN 2243-2 10 B31 20 B32 Relative humidity 95 % to 100 % 70 3 30 B33 8.1.1 EN 2243-6 30 C1 60 C2 Salt spray ISO 3768 35 2 90 C3 8.1.2 EN 2243-2 continued EN 2243-5:20058 T
37、able 1 (concluded) Environment Temperature (C) Time (days) Code Clause ref. Type of test 15 D1 30 D2 Phosphorester oils EN 2379 (XX) 70 2 60 D3 30 E1 40 2 60 E2 Test fuel EN 2379 (XXI) 90 E330 F1 60 F2 Standard test fuel EN 2379 (XXII) 40 2 90 F3 30 G1 60 G2 Anti-icing fluid EN 2379 (XIV) 40 2 90 G3
38、 15 H1 30 H2 Hydraulic fluid EN 2379 (XII) 70 2 60 H3 EN 2243-1 15 J1 30 J2 Phosphorester oils EN 2379 (XX) 70 2 60 J3 30 K1 60 K2 Test fuel EN 2379 (XXI) 40 2 90 K3 30 L1 60 L2 Standard test fuel EN 2379 (XXII) 40 2 90 L3 30 M1 60 M2 Anti-icing fluid EN 2379 (XIV) 40 2 90 M3 15 N1 30 N2 Hydraulic f
39、luid EN 2379 (XII) 70 2 60 N3 8.1.3 EN 2243-6 8.1.1 Relative humidity (exposure at 50 C or 70 C) The exposure shall be continuous. Any interruption shall be recorded. The test pieces shall be suspended in the exposure area in such a way that the minimum distance between each other and the sides of t
40、he humidity cabinet is 25 mm. The test pieces shall be arranged so that condensate from one test piece does not drip on another. EN 2243-5:20059 8.1.2 Salt spray See ISO 3768 except that the test pieces shall be suspended in such a way that the minimum distance between each other and the side of the
41、 cabinet is 25 mm. 8.1.3 Fluids The test piece shall be exposed in the test fluid in such a way that the joints are completely immersed. The position of the test piece is not critical, provided the minimum distance of the joints between each other and the sides and bottom of the container is 10 mm.
42、The exposure time shall be estimated from the time the test fluid has reached the test temperature specified in the Table 1. Each test shall start with fresh fluid that shall not be changed during the test. 8.2 Cleaning Immediately after exposure, the test pieces shall be cleaned with water (maximum
43、 temperature 35 C) and dried with clean dry cloths. 8.3 Destructive testing Destructive testing shall be carried out according to the relevant test method standard (and after 24 h, but within 30 h, after removal from the exposure). Conditioning during this period of time shall take place at standard
44、 atmosphere according to EN 2743. Reference test pieces shall be destructively tested within three days or the final cure. 9 Expression of results 9.1 Single lap shear tests The shear strength per test piece is to be carried out according to EN 2243-1. The reduction percentage R of the aged test pie
45、ces compared with the reference test pieces shall be calculated as follows: R= (1 2)/1. 100 % where: 1 average shear strength of all reference test pieces; 2average shear strength of all aged test pieces. 9.2 Peel test metal/metal 9.2.1 Calculation of reduction in peel strength The peel strength per
46、 test piece is to be carried out according to EN 2243-2. EN 2243-5:200510 The reduction percentage RFof the aged test pieces compared with the reference test pieces shall be calculated as follows: RF= (F1 F2)/F1. 100 % where: F1 average shear strength of all reference test pieces; F2 average shear s
47、trength of all aged test pieces. 9.2.2 Calculation of attacked area Remove the thin peel sheet by peeling the remaining portion of the test piece by hand or other means. Judge the adhesive faced side of the thick (1,6 mm) adherent without any removal of adhesive as follows: All areas where the thick
48、 adherent only has been corroded are clearly shown as the adhesive has been removed by the thin adherent. All areas where the thin adherent only, or both thin and thick adherents have been attacked are recognised by corrosion residues on the adhesive surface or by a sudden change in type of failure.
49、 Establish in cm2the bond line area that has been changed by corrosion and/or hydration of the metal surface. Establishing the attacked area Aacan be done with the aid of transparent graph paper. Calculate the percentage of attacked area as follows: Aa= A1/A2. 100 % where: A1 total area of attacked surface; A2 total area of bonded joint. 9.3 Shear stress and shear strain tests 9.3.1 Calculation of reduction in shear stress The shear strength per test
