1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3866:2013Aerospace series Non-metallic materials Glasstranparencies Test methods Determination of ream andsurface rippleBS EN 3866:2013 BRITISH STANDARDNational forewordThi
2、s British Standard is the UK implementation of EN 3866:2013.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, Non-metallic materials for aerospace purposes.A list of organizations represented on this committee can beobtained on request to its secretary.This publicat
3、ion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 80246 1ICS 49.025.99Compliance with a British Standard cannot confer immunity from
4、legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedBS EN 3866:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3866 January 2013 ICS 49.025.99 English
5、Version Aerospace series - Non-metallic materials - Glass tranparencies - Test methods - Determination of ream and surface ripple This European Standard was approved by CEN on 17 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
6、or 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in thr
7、ee 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bo
8、dies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
9、Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
10、 national Members. Ref. No. EN 3866:2013: EBS EN 3866:2013EN 3866:2013 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms, definitions, symbols and abbreviations .5 4 Health, safety and environment .5 5 Principle/technique 5 6 Resources .6 6.1 Apparatus/facilit
11、ies 6 6.2 Materials/reagents .6 6.3 Qualification of personnel 6 7 Test samples/test pieces 6 8 Test procedure .6 9 Expression of results 6 10 Measurement uncertainties 6 11 Designation 6 12 Test report 7 BS EN 3866:2013EN 3866:2013 (E) 3 Foreword This document (EN 3866:2013) has been prepared by th
12、e Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in 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 ASD
13、, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2013, and conflicting national standards shall be withdrawn at the latest by July 2013. Attention is drawn
14、to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
15、countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway
16、, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3866:2013EN 3866:2013 (E) 4 Introduction This standard is part of the series of EN non-metallic material standards for aerospace applications. The general organisation of this series is
17、described in EN 4385. This standard is a level 3 document as defined in EN 4385. It has been prepared in accordance with EN 4386. BS EN 3866:2013EN 3866:2013 (E) 5 1 Scope This European Standard defines a qualitative method for the determination of the ream and surface ripple in glass transparencies
18、 for aircraft applications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced d
19、ocument (including any amendments) applies. EN 4385, Aerospace series Non-metallic materials General organisation of standardisation Links between types of standards 1)EN 4386, Aerospace series Non-metallic materials Rules for the drafting and presentation of test method standards 1)3 Terms, definit
20、ions, symbols and abbreviations Not applicable. 4 Health, safety and environment This European Standard does not necessarily include all health, safety and environment requirements, associated with its use. Persons using this European Standard shall be familiar with normal laboratory / test house pr
21、actices. It is the responsibility of the user to establish satisfactory health, safety and environment practices and to ensure conformity with any European, National or local laws / regulations. 5 Principle/technique The shadow of the glass transparency, by a homogeneous high intensity light may be
22、viewed on a matt screen, when illuminated as in 6.1. The distortions and the optical defects are revealed on the screen by the shadow. 1) Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). BS EN 3866:2013EN 3866:2013 (E) 6 6 Resources 6.1 Apparatus/faci
23、lities A dark room. A high intensity point light source with an output of 200 W to 250 W, able to create a homogeneous field. A matt white screen to receive the shadow of the glass transparency. 6.2 Materials/reagents Not applicable. 6.3 Qualification of personnel Not applicable. 7 Test samples/test
24、 pieces Not applicable test to be done on actual plies. 8 Test procedure See Figure 1. The glass transparency under test shall be held parallel to a matt white screen at a distance of 1 000 mm. The high intensity light shall set at a distance of 3 000 mm from the glass transparency, then shone throu
25、gh the transparency to produce shadows on the screen. The transparency may be angled slightly away from the screen in order to determine whether a fault exists. 9 Expression of results This is a qualitative method only - see scope. 10 Measurement uncertainties The precision of this test method is no
26、t known because inter-laboratory data are not available. 11 Designation Not applicable. BS EN 3866:2013EN 3866:2013 (E) 7 12 Test report The test report shall include: reference to the test method designation; designation of the apparatus; any other information relevant to the test method; identific
27、ation and traceability of the semi-finished product to be tested, in accordance with the technical specification; traceability to test apparatus used; traceability to individual performing the test work; any incident which may have affected the results; any deviation from the test method standard; d
28、ate of test. Key 1 light source 2 part of glass under test 3 matt white screen 4 e.g. 1 000 mm. Figure 1 Shadowgraph apparatus This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-relate
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