1、BRITISH STANDARD AEROSPACE SERIES BS EN 2375:1992 Resin preimpregnated materials Production batch sampling procedure The European Standard EN 2375:1992 has the status of a British StandardBSEN2375:1992 This British Standard, having been prepared under the directionof the Aerospace Standards Policy C
2、ommittee, waspublished under the authorityof the Standards Boardand comes into effect on 15June 1992 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/64 Draft for comment 90/70826 DC ISBN 0 580 20873 7 Cooperating organizations The European Commit
3、tee 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 normalisation Denmark Dansk Standardiseringsraad Finland Suomen
4、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 Authority of Ireland Italy Ente Nazionale Italiano di Unificazione
5、 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 Standardiseringskommissionen i Sverige Switzerland Association sui
6、sse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN2375:1992 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 2375 3 National annex NA (informative) Committ
7、ees responsible Inside back coverBSEN2375:1992 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 EN2375:1992 Aerospace series Resin preimpregnated materials Production batch
8、sampling procedure published by the European Committee for Standardization (CEN). EN2375 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 provisions of a contract. Users of British Standards are
9、 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, pagesi andii, theEN title page, pages2 to4, an inside back cover and a back cover.
10、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 EUROPISCHE NORM EN2375 February 1992 UDC 678.6:667.621.633:620.1:629.7 Descriptors: Aircraft industr
11、y, reinforcing materials, preimpregnated products, resins, sampling, sampling tables English version Aerospace series Resin preimpregnated materials Production batch sampling procedure Srie arospatiale Matriaux primprgns de rsine Echantillonnage des lots de production Luft- und Raumfahrt Harzimprgni
12、erte Werkstoffe Verfahren zur Probenahme aus Fertigungslosen This European Standard was approved by CEN on1992-02-28. CEN members are bound to comply with of the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard withou
13、t 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 language mad
14、e 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
15、 Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1992 Copyright reserved to CEN members Ref.
16、No. EN 2375:1992 EEN2375:1992 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 of this Association, this standard has successively received the approval o
17、f the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ice
18、land, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Contents Page Foreword 2 1 Scope and field of application 3 2 Definitions 3 3 Numbering of rolls and sheets 3 4 Sampling 3EN2375:1992 BSI 01-2000 3 1 Scope and field of application 1.1 This
19、 standard specifies the method for sampling batches of resin impregnated fibre reinforcement used for aerospace applications. 1.2 The method is only applicable to impregnated woven fabrics and unidirectional reinforcement but is not suitable for impregnated rovings. 2 Definitions 2.1 production batc
20、h a production batch of impregnated material shall consist of rolls or sheets impregnated in a continuous manufacturing operation that conforms to a fixed manufacturing process and using a single mixture of resin ingredients and one type of reinforcement, simple or hybrid, of single source and const
21、ant over the whole of the batch 2.2 continuous manufacturing operation a continuous manufacturing operation is defined as one in which the process is not interrupted for more than24 continuous hours or by a different product run 2.3 elementary unit an elementary unit shall be a maximum of50kg. This
22、elementary unit may consist of one roll or a number of rolls or sheets, produced in a continuous operation, unless otherwise agreed between purchaser and manufacturer 3 Numbering of rolls and sheets Rolls and sheets shall be numbered in the sequence of production. 4 Sampling 4.1 The sampling plan sh
23、own below indicates the number of elementary units to be taken from a specific batch size. 4.2 The normal method shall be used unless the purchaser and manufacturer agree that the statistical method is required. 4.3 The sampling sequence shall be in accordance with the following: 2 elementary units
24、sampled: first and last. Above 2 elementary units sampled: first and every (to the lowest whole number). where: n = number of elementary units in the batch, x = number of elementary units to be sampled. Example: For a batch of 35 elementary units we take the first and everyi.e. every8th unit (to the
25、 lowest whole number), Then the elementary units to be sampled are: No. 1, No. 8, No. 16, No. 24 and No. 32. Number of elementary units in the batch Total of elementary units to be sampled Normal Statistical Up to 3 1 All 4 to 15 2 3 16 to 25 4 4 26 to 40 5 5 41 to 65 7 7 n x 1 - 35 5 1 -4 blankBSEN
26、2375:1992 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 Technical Committee ACE/64 upon which the following bodies were represented:
27、 British Plastics Federation Ministry of Defence Society of British Aerospace Companies LimitedBS EN 2375:1992 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
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