EN 3745-510-2017 en Aerospace series - Fibres and cables optical aircraft use - Test methods - Part 510 Bending test《航空航天系列-光纤和光缆-飞机用光学-试验方法-第510部分 弯曲试验》.pdf

1、BS EN 3745-510:2017Aerospace series Fibres andcables, optical, aircraft use Test methodsPart 510: Bending testBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 3745-510:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 374

2、5-510:2017. It supersedes BS EN 3745-510:2012 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations represented on this committee can be obtained on request to its secreta

3、ry.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 94211 2 ICS 49.060Compliance with a British Standard cannot conf

4、er immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 3745-510:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN

5、 3745-510 March 2017 ICS 49.060 Supersedes EN 3745-510:2012English Version Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 510: Bending test Srie arospatiale - Fibres et cbles optiques usage aronautique - Mthodes dessais - Partie 510: Essai de courbure Luft- und Rau

6、mfahrt - Faseroptische Leitungen fr Luftfahrzeuge - Prfverfahren - Teil 510: Biegetest This European Standard was approved by CEN on 29 July 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of

7、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, German).

8、 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, Croatia, Cy

9、prus, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

10、United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.

11、 EN 3745-510:2017 EBS EN 3745-510:2017EN 3745-510:2017 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Preparation of specimens 4 4 Apparatus. 5 5 Methods 7 BS EN 3745-510:2017EN 3745-510:2017 (E) 3 European foreword This document (EN 3745-510:2017) has been prepared by

12、the 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 A

13、SD, 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 September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attenti

14、on is drawn 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. This document supersedes EN 3745-510:2012. According to the CEN-CENELEC Internal Regulations,

15、 the national standards organizations of the following 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, La

16、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3745-510:2017EN 3745-510:2017 (E) 4 1 Scope This European Standard specifies a method of determining the attenuation variat

17、ion of an optical cable during mechanical bending under load at the maximum and minimum operating 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 e

18、dition cited applies. For undated references, the latest edition of the referenced document (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, aircraf

19、t use Test methods Part 100: General EN 3745-201, Aerospace series Fibres and cables, optical, 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 General The s

20、pecimens shall be prepared according to the product standard. If not yet at standard test conditions, the specimens shall be subjected to standard test conditions and stabilized at these conditions for 24 h as defined in EN 2591-100. 3.2 Method A Unless specified in the technical specification, the

21、following details shall be stated: Number and length of or cable (standard concerns cable only). Mass M to be applied to ensure contact between the cable and the mandrel. Diameter(s) D of the mandrel. Number of turns N. Maximum permissible variation of attenuation induced after N turns (according to

22、 EN 3745-301). Maximum permissible variation of attenuation 1 h after the end of the test. Maximum permissible residual attenuation after removal from test set-up. The wavelengths to be measured. 3.3 Method B Unless specified in the applicable product standard, the following details shall be stated:

23、 The number and length of specimens. Mass M to be applied to ensure contact between the cable and the mandrel. Diameter(s) D of the mandrel. The separation distance between the mandrels (L). The number of wraps around the mandrels (N). The maximum permissible variation in attenuation. The wavelength

24、s to be measured. BS EN 3745-510:2017EN 3745-510:2017 (E) 5 4 Apparatus 4.1 Method A The apparatus shall comprise: A Light Launch System (LLS) as defined in EN 2591-100. A Light Detection System (LDS) as defined in EN 2591-100. A test fixture capable of applying the bending test required by the spec

25、ification. A typical arrangement is shown in Figure 1. Key 1 Fixed point 2 Fixed mandrel 3 Mass 4 LLS 5 LDS Figure 1 4.2 Method B The apparatus shall comprise: A Light Launch System (LLS) as defined in EN 2591-100. A Light Detection System (LDS) as defined in EN 2591-100. A test fixture capable of a

26、pplying the bending test required by the specification. A typical arrangement is shown in Figure 2. BS EN 3745-510:2017EN 3745-510:2017 (E) 6 Upper view Front view Key 1 LLS 2 Mandrels 3 LDS 4 Fibre optic cable 5 Weights Figure 2 BS EN 3745-510:2017EN 3745-510:2017 (E) 7 5 Methods 5.1 Method A 5.1.1

27、 Procedure Method A Connect the specimen end to the LLS. After fixation of this specimen on the fixed point, install the mass on the specimen. Connect the specimen end to the LDS. Zero the LDS to establish a reference measurement. Roll up the specimen one turn on the mandrel. Measure the variation o

28、f attenuation (EN 3745-301, method C). Repeat N times the two last operations. Maintain the specimen on the test equipment for 1 h and then remeasure the variation of attenuation. 5.1.2 Final measurements and requirements Method A Measure the residual attenuation (EN 3745-301, method C) after removi

29、ng the specimen from the test equipment. EN 3745-201 Visual examination 5.2 Method B 5.2.1 Procedure Method B Install the mandrels on a suitable fixture in to maintain a separation distance (center to center) as specified in the applicable product standard. Connect the specimen ends to the LLS and L

30、DS. Straighten the specimen and perform the initial transmittance measurement to obtain a reference measurement. Wrap the entire specimen around two mandrels with significant tension through a load of weight M defined in the product standard as shown in Figure 2 to ensure a perfect contact with the

31、mandrel on half perimeter. After the winding is complete, perform the final transmittance measurement. 5.2.2 Final measurements and requirements Method B Measure the attenuation variation (EN 3745-301, method C) after wrapping the specimen on the mandrels. The difference in attenuation shall be less

32、 than the specified value in the applicable product standard. EN 3745-201 Visual examination This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI i

33、s incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)About usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise

34、into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsW

35、e can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsYou can buy and download PDF versions of BSI publications, including British an

36、d adopted European and international standards, through our website at where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.Copyright in BSI publicationsAll

37、 the content in BSI publications, including British Standards, is the property of and copyrighted by BSI or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publicatio

38、n and use.Save for the provisions below, you may not transfer, share or disseminate any portion of the standard to any other person. You may not adapt, distribute, commercially exploit, or publicly display the standard or any portion thereof in any manner whatsoever without BSIs prior written consen

39、t.Storing and using standardsStandards purchased in soft copy format: A British Standard purchased in soft copy format is licensed to a sole named user for personal or internal company use only. The standard may be stored on more than 1 device provided that it is accessible by the sole named user on

40、ly and that only 1 copy is accessed at any one time. A single paper copy may be printed for personal or internal company use only.Standards purchased in hard copy format: A British Standard purchased in hard copy format is for personal or internal company use only. It may not be further reproduced i

41、n any format to create an additional copy. This includes scanning of the document.If you need more than 1 copy of the document, or if you wish to share the document on an internal network, you can save money by choosing a subscription product (see Subscriptions).Reproducing extractsFor permission to

42、 reproduce content from BSI publications contact the BSI Copyright & Licensing team.SubscriptionsOur range of subscription services are designed to make using standards easier for you. For further information on our subscription products go to British Standards Online (BSOL) youll have instant acce

43、ss to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll always be up to date. You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in singl

44、e copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will automatically receive the latest hard copy of your standards when theyre revised or replaced. To find out more about becoming a BSI Subscribing Member and

45、the benefits of membership, please visit a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licences can cover as few or as many users as you wish. With updates supplied as soon as theyre available, you can be sure your documentation is current. For fu

46、rther information, email .RevisionsOur British Standards and other publications are updated by amendment or revision. We continually improve the quality of our products and services to benefit your business. If you find an inaccuracy or ambiguity within a British Standard or other BSI publication pl

47、ease inform the Knowledge Centre.Useful ContactsCustomer ServicesTel: +44 345 086 9001Email (orders): Email (enquiries): SubscriptionsTel: +44 345 086 9001Email: Knowledge CentreTel: +44 20 8996 7004Email: Copyright & LicensingTel: +44 20 8996 7070Email: NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Group Headquarters389 Chiswick High Road London W4 4AL UKBSI Back Cover.indd 1 27/01/2016 14:20