1、BRITISH STANDARD AEROSPACE SERIES BS EN 2329:1993 Textile glass fibre preimpregnates Test method for the determination of mass perunit area The European Standard EN 2329:1993 has the status of a British Standard UDC 677.521.074.077.62:620.1:629.7BSEN 2329:1993 This British Standard, having been prep
2、ared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15 May 1993 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/64 Draft for comment 91/78896 DC ISBN
3、0 580 22145 8 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de norma
4、lisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authori
5、ty of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standar
6、diseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN 2329:1993 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword
7、 2 Text of EN 2329 3 National annex NA (informative) Committees responsible Inside back coverBSEN 2329:1993 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN2329:1993 Aero
8、space series Textile glass fibre preimpregnates Test method for the determination of mass per unit area published by the European Committee for Standardization (CEN). EN 2329 was produced as a result of international discussion in which the UnitedKingdom took an active part. A British Standard does
9、not purport to include all the necessary provisions 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
10、 front cover, pages i and ii, theEN title page, pages 2 to 6, 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.EUROPEAN STANDARD NORME EUROPENNE
11、 EUROPISCHE NORM EN 2329 March 1993 UDC 677.521.074.077.62:620.1:629.7 Descriptors: Aircraft industry, glass-cloth, plastics, preimpregnated products, tests, determination, specific areas English version Aerospace series Textile glass fibre preimpregnates Test method for the determination of mass pe
12、r unit area Srie arospatiale Primprgns de fibres de verre textile Mthode dessai pour la dtermination de la masse superfacique Luft- und Raumfahrt Glasfilament Prepreg Prfmethode zur Bestimmung der flchenbezogenen Masse This European Standard was approved by CEN on 1993-03-01. CEN members are bound t
13、o 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 and bibliographical references concerning such national standards may be obtained on application to the Centr
14、al 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 responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as t
15、he official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Euro
16、pen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 2329:1993 EEN 2329:1993 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacture
17、rs (AECMA). After inquiries and votes carried out in accordance with the rules 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 s
18、hall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 1993, and conflicting national standards shall be withdrawn at the latest by September 1993. According to the CEN/CENELEC Internal Regulations, the following coun
19、tries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitio
20、ns 3 4 Principle 3 5 Apparatus 3 6 Atmosphere for conditioning and testing 3 7 Sampling and specimens 3 8 Procedure 4 9 Calculation and expression of results 4 10 Test report 4 Figure 1 Example of positioning of specimens on woven textile glass fibre fabric sample across the width 4 Figure 2 Example
21、 of positioning of specimens on woven textile glass fibre fabric sample on axis inclined at on angle ! as close as possible to the weft direction 5 Figure 3 Example of positioning of specimens on textile grass fibre unidirectional sheet or tape sample 5EN 2329:1993 BSI 12-1999 3 1 Scope 1.1 This sta
22、ndard specifies a method for determining the mass per unit area of a textile glass fibre preimpregnate, for aerospace use. 1.2 This standard does not give any directives necessary to meet the health and safety requirements. It is the responsibility of the user of this standard to adopt appropriate h
23、ealth and safety precautions. 2 Normative references This European 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, subs
24、equent amendments to or revisions of any of these publications 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. EN 2743, Aerospace series Reinforced plastics Standard procedures fo
25、r conditioning prior to testing 1) . 3 Definitions A textile glass fibre preimpregnate with a thermosetting or thermoplastic resin is a material in the form of a synthetic resin impregnated textile glass fibre unidirectional sheet, tape or woven fabric and used for the manufacture of moulded compone
26、nts. 4 Principle Weighing of specimens of known area after conditioning in a specified atmosphere. 5 Apparatus 5.1 Balance with an accuracy of0.1mg 5.2 Template of standard specimen 5.3 Ancillary items such as sharp knife and tweezers 6 Atmosphere for conditioning and testing 6.1 Conditioning 6.1.1
27、Conditioning of material stored at ambient temperature For material stored at ambient temperature, the amount of material required for testing shall be sampled and conditioned in the test atmosphere (see6.2.1) for a minimum of2h, unless otherwise specified. 6.1.2 Conditioning of material stored belo
28、w ambienttemperature For material stored at temperatures lower than ambient temperature, the material, suitably packed in an airtight and solvent resistant bag to prevent moisture pick-up, shall be allowed to reach ambient temperature over a period of time according to the mass of the package. This
29、time shall not be less than8h and the actual time shall be recorded in the report. When the material has reached the ambient temperature, the amount required for testing shall be sampled and conditioned in the test atmosphere (see6.2.1) for a minimum of2h, unless otherwise specified. 6.2 Testing 6.2
30、.1 Atmosphere for testing The tests shall be carried out at temperature and relative humidity conditions in accordance withEN2743B. 6.2.2 Time interval between conditioning and testing Unless otherwise specified, the test shall be carried out within6h, after conditioning, the specimen being kept in
31、the test atmosphere until the test is carried out. 7 Sampling and specimens 7.1 Specimen The specimen has a square shape. The dimension of the sides shall be (100 1) mm. 1) Published as AECMA pre-standard at the date of publication of this standardEN 2329:1993 4 BSI 12-1999 Other dimensions of the s
32、pecimen may be used, subject to agreement between the purchaser and supplier, but shall have a surface area of100cm 2with a tolerance of2%. 7.2 Number and distribution of specimens At least three specimens shall be used. These shall be evenly distributed and cut from the sample diagonally across the
33、 width or length, as shown inFigure 1 andFigure 2 for woven fabrics and inFigure 3 for unidirectional sheet or tape. 8 Procedure Cut the specimens from a representative sample of the material under test, using the appropriate template. Weigh each specimen with its separating film(s) to the nearest m
34、g (m 1 ). Remove the separating film(s) and weigh this to the nearest mg (m 2 ). 9 Calculation and expression of results The mass per unit area metre for each specimen is calculated from the formula: m = (m 1 m 2 ) 100 where: Calculate the arithmetic mean of the values obtained for m, to the nearest
35、 g/m 2 . 10 Test report The test report shall include the following information: 10.1 Reference to the type of preimpregnate, with complete description, including prepreg batch number 10.2 Reference to this standard 10.3 Description of the sampling method 10.4 Number of specimens used, if different
36、from this standard 10.5 Dimensions of specimens, if different from this standard 10.6 Atmosphere used for conditioning and testing and actual time used for conditioning 10.7 Individual values. 10.8 Arithmetic mean value of the mass per unit area 10.9 Observations on any circumstances liable to have
37、influenced the results m : the mass per unit area, in g/m 2 , m 1 : the mass of the specimen plus separating film(s), in g, m 2 : the mass of the separating film(s), in g. Figure 1 Example of positioning of specimens on woven textile glass fibre fabric sample across the widthEN 2329:1993 BSI 12-1999
38、 5 Figure 2 Example of positioning of specimens on woven textile glass fibre fabric sample anaxisinclined at an angle ! as close as possible to the weft direction Figure 3 Example of positioning of specimens on textile grass fibre unidirectional sheet or tape sample6 blankBSEN 2329:1993 BSI 12-1999
39、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 Technical Committee ACE/64, upon which the following bodies were represented: British Plastics Fed
40、eration Ministry of Defence Society of British Aerospace Companies LimitedBS EN 2329:1993 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the
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