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本文(EN 3745-405-2012 en Aerospace series - Fibres and cables optical aircraft use - Test methods - Part 405 Low High temperature bend test《航空航天系列 飞机光纤和电缆 试验方法 第405部分 低 高温弯曲试验》.pdf)为本站会员(tireattitude366)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

EN 3745-405-2012 en Aerospace series - Fibres and cables optical aircraft use - Test methods - Part 405 Low High temperature bend test《航空航天系列 飞机光纤和电缆 试验方法 第405部分 低 高温弯曲试验》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3745-405:2012Aerospace series Fibres andcables, optical, aircraft use Test methodsPart 405: Low/High temperature bend testBS EN 3745-405:2012 BRITISH STANDARDNational forew

2、ordThis British Standard is the UK implementation of EN 3745-405:2012.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secre

3、tary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 77588 8ICS 49.060Compliance with a British Standard cannot confe

4、r immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3745-405 July 2012 ICS 49.090 English Versi

5、on Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 405: Low/High temperature bend test Srie arospatiale - Fibres et cbles optiques usage aronautique - Mthodes dessais - Partie 405: Essai de courbure aux tempratures basse/haute Luft- und Raumfahrt - Faseroptische Lei

6、tungen fr Luftfahrzeuge - Prfverfahren - Teil 405: Biegeprfung bei niedriger/hoher Temperatur This European Standard was approved by CEN on 23 March 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st

7、atus 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 three official versions (English, French,

8、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 bodies of Austria, Belgium, Bulgaria, Cro

9、atia, 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, Spain, Sweden, Switzerland, Turkey and

10、United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3745-405

11、:2012: EBS EN 3745-405:2012EN 3745-405:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Preparation of specimens .44 Apparatus .55 Method 6BS EN 3745-405:2012EN 3745-405:2012 (E) 3 Foreword This document (EN 3745-405:2012) has been prepared by the Aerospace and Defence Industrie

12、s 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, prior to its presentation to CE

13、N. 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 January 2013, and conflicting national standards shall be withdrawn at the latest by January 2013. Attention is drawn to the possibility that som

14、e 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 organizations of the following countries are bound to impl

15、ement 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, Poland, Portugal, Romania

16、, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3745-405:2012EN 3745-405:2012 (E) 4 1 Scope This European Standard specifies a method of determining the attenuation variation of an optical cable during mechanical bending under load at the maximum and minimum op

17、erating temperatures. 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 documen

18、t (including any amendments) applies. EN 2591-100, Aerospace series Elements of electrical and optical connection Test methods Part 100: General EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General EN 3745-201, Aerospace series Fibres and cables, opti

19、cal, aircraft use Test methods Part 201: Visual examination EN 3745-301, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 301: Attenuation 3 Preparation of specimens 3.1 If not at the standard test conditions, the specimens shall be subjected to standard test conditions an

20、d stabilized at these conditions for 24 h as defined in EN 3745-100. 3.2 The following details shall be specified if not already included in the product standard: The number and length of specimens; The upper and lower temperatures at which test is carried out; The mandrel diameter and number of wra

21、ps; The maximum permissible variation in attenuation; The required loads to be applied during the test; The wavelengths to be measured. BS EN 3745-405:2012EN 3745-405:2012 (E) 5 4 Apparatus 4.1 The apparatus shall comprise: A Light Launch System (LLS) as defined in EN 2591-100; A Light Detection Sys

22、tem (LDS) as defined in EN 2591-100; A test fixture suitable for attaching the specimen with weights to a rotating mandrel; A suitable environmental chamber capable of meeting the specified temperatures 2 C. A typical arrangement is shown in Figure 1. Key 1 Fibre optic cable 2 Loads 3 Mandrel 4 Wind

23、ing direction 5 LLS 6 LDS Figure 1 BS EN 3745-405:2012EN 3745-405:2012 (E) 6 5 Method 5.1 Procedure 1) Connect the specimen to the LLS and LDS. 2) Place specimen in the environmental chamber and attach the specimen to the mandrel, in preparation for winding. 3) Attach loads to source and detection e

24、nd of cable. 4) Measure the initial optical transmittance measurements at wavelengths according to the applicable product standard to establish a reference. 5) Condition the specimen for four (4) hours at the low temperature test condition specified in the applicable product standard. 6) Measure the

25、 optical transmittance values at the end of the four (4) hours conditioning at the low temperature test condition prior to winding on the mandrel. 7) After the four (4) hours conditioning period and while the cable is still at the test temperature, wind cable two turns on to the mandrel using a stea

26、dy rate of two turns per minute. While specimen is still wrapped on the mandrel measure the optical transmittance. 8) Unwind the specimen and measure the optical transmittance. 9) Allow the specimen to come to room temperature. 10) Repeat steps 5) through to 9) at the high temperature test condition

27、 specified in the applicable product standard. 5.2 Final measurements and requirements The difference in attenuation of the conditioned specimen before and after mandrel winding at both temperatures shall be less than the specified value in the applicable product standard. Perform a visual examinati

28、on according to EN 3745-201. This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. BSI is inc

29、orporated by Royal Charter. British Standards and other standardisation products are published by BSI Standards Limited.British Standards Institution (BSI)raising standards worldwideBSI389 Chiswick High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards and PASs are periodical

30、ly updated by amendment or revision. Users of British Standards and PASs should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while usi

31、ng British Standards would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside frontcover. Similary for PASs, please notify BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001BSI offers BSI Subscribing Members an individua

32、l updating service called PLUS which ensures that subscribers automatically receive the latest editions of British Standards and PASs.Tel: +44 (0)20 8996 7669 Fax: +44 (0)20 8996 7001Email: Buying standardsYou may buy PDF and hard copy versions of standards directly using acredit card from the BSI S

33、hop on the website addition all orders for BSI, international and foreign standards publicationscan be addressed to BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001Email: In response to orders for international standards, BSI will supply the British Standard implementation of

34、 the relevant international standard, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, Europeanand international standards through its Knowledge Centre.Tel: +44 (0)20 8996 7004 Fax: +44 (0)20 8996 7005Email: BSI Subscribing Members are kept up

35、to date with standards developments and receive substantial discounts on the purchase priceof standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards and P

36、ASs via British Standards Online can be found at information about British Standards is available on the BSI website at www.bsi- the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that

37、 own copyright in the information used (such as the international standardisation bodies) has formally licensed such information to BSI for commerical publication and use. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system

38、 or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Department.Tel: +44 (0)20 8996 7070Email:

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