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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2155-2:1993 Test methods for transparent materials for aircraft glazing Part 2: Determination of water absorption The European Standard EN 2155-2:1993 has the status of a British Standard UDC 629.73.023.26:620.1:535.695.52 Licensed Copy: sheffieldun sheffieldu
2、n, na, Thu Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2155-2:1993 This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 March 1993 BSI 01-
3、2000 The following BSI references relate to the work on this standard: Committee reference ACE/62 Draft for comment 91/74926 DC ISBN 0 580 22063 X Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the na
4、tional standards organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V.
5、 GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiserin
6、gsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Lic
7、ensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2155-2:1993 BSI 01-2000i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 1Scope and field of application3 2Normative references3 3Purpose of the metho
8、d3 4Apparatus3 5Specimens3 6Procedure3 7Calculation and expression of results3 8Test report3 National annex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+0
9、0:00 2006, Uncontrolled Copy, (c) BSI BS EN 2155-2:1993 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN 2155-2:1993, Aerospace series Test methods for transparent materi
10、als for aircraft glazing Part 2 Determination of water absorption, published by the European Committee for Standardization (CEN). EN 2155-2 was produced as a result of international discussion in which the UK took an active part. A British Standard does not purport to include all the necessary provi
11、sions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title pag
12、e, pages 2 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+00:00 200
13、6, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2155-2 January 1993 UDC 629.73.023.26:620.1:535.695.52 Descriptors: Aircraft industry, glazing, transparent plastics, glass, water, absorption tests English version Aerospace series Test methods for transparent materi
14、als for aircraft glazing Part 2: Determination of water absorption Srie arospatiale Mthodes dessais pour matriaux transparents pour vitrages aronautiques Partie 2: Dtermination de labsorption deau Luft- und Raumfahrt Prfverfahren fr transparente Werkstoffe zur Verglasung von Luftfahrzeugen Teil 2: B
15、estimmung der Wasseraufnahme This European Standard was approved by CEN on 1993-01-04. 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 any alteration. Up-to-date lists
16、 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 language made by translation under the respons
17、ibility 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
18、Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 2155-2:1993 E Licensed Copy: s
19、heffieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2155-2:1993 BSI 01-2000 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules
20、 of this Association, this standard has successively 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 publication of an i
21、dentical text or by endorsement, at the latest by July 1993, and conflicting national standards shall be withdrawn at the latest by July 1993. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland,
22、 France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2155-2:1993 BSI 01-20003 1 Scope and field of app
23、lication This standard specifies the method used for the determination of the water absorption by means of immersion in conformance with ISO 62, method 1, applicable for transparent materials. In addition, it specifies the particular conditions for aircraft glazing. 2 Normative references This Europ
24、ean Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications
25、apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 62:1980, Plastics Determination of water absorption. 3 Purpose of the method Indication of the behaviour of materials in certai
26、n moist conditions. The values do not represent the maximum amount of water that can be absorbed. The absorption of water can affect the dimensions and the electrical, thermal and mechanical properties. 4 Apparatus 4.1 Balance with an accuracy of 1 mg. 4.2 Oven which can be maintained at a temperatu
27、re of (50 2) C. 4.3 Vessel for distilled water maintained at (23 0,5) C. 4.4 Desiccator 5 Specimens The specimen shall be (50 1) mm square with a thickness of (3,0 0,2) mm machined from the sheet under test. Cut or machined surfaces shall be smooth and shall not show any burring. 6 Procedure Three s
28、pecimens are dried in an oven for (24 1) h at a temperature of (50 2) C, cooled in a desiccator and each is weighed to the nearest 1 mg (mass m1). They are then placed in distilled water maintained at a temperature of (23 0,5) C. Precautions are taken to prevent specimens from making contact over an
29、y substantial area, either with one another or with the container. After (24 1) h they are taken from the water and all surface water removed with a clean dry cloth or with filter paper. The specimens are weighed to the nearest 1 mg again within one minute of taking them from the water (mass m2). NO
30、TESpecimens of different materials are not to be placed into the same container of distilled water. 7 Calculation and expression of results The water absorption of a specimen (m2 m1) is expressed in milligrammes. The value recorded for the water absorption of the material under test is the arithmeti
31、c mean of the values obtained on the specimens. The measured thicknesses of specimens and the masses m1 and m2 are to be recorded. 8 Test report The test report shall include the following information: reference to this standard, the average water absorption in milligrams and individual values, the
32、average thickness of specimens in millimetres and individual values, the average initial mass of specimens in grams and individual values. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Th
33、u Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2155-2:1993 BSI 01-2000 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technic
34、al Committee ACE/62 upon which the following bodies were represented: British Plastics Federation Ministry of Defence Society of British Aerospace Companies Limited National annex NB (informative) Cross-references Publication referred toCorresponding British Standard ISO 62:1980BS 2782 Methods of te
35、sting plastics Methods 430A to 430D:1983 Determination of water absorption at 23 C. Determination of water absorption at 23 C with allowance for water-soluble matter. Determination of boiling water absorption. Determination of boiling water with allowance for water-soluble matter Licensed Copy: shef
36、fieldun sheffieldun, na, Thu Nov 02 17:55:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2155-2:1993 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards
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