1、BRITISH STANDARD AEROSPACE SERIES BS EN 3745-205:2002 Fibres and cables, optical, aircraft use Test methods Part 205: Cable longitudinal dimensional stability The European Standard EN 3745-205:2002 has the status of a British Standard ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED
2、BY COPYRIGHT LAWBS EN 3745-205:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 25 June 2002 BSI 25 June 2002 ISBN 0 580 39906 0 National f
3、oreword This British Standard is the official English language version of EN 3745-205:2002. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/10, Aerospace fibre optic systems and equipme
4、nt, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Cata
5、logue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their
6、correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests
7、 informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document i
8、ndicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3745205 June2002 ICS49.060 Englishversion AerospaceseriesFibresandcables,optical,aircraftuseTest methodsPart205:Cablelongitudinaldimensionalstability
9、 SriearospatialeFibresetcblesoptiquesusage aronautiqueMthodesdessaisPartie205:Stabilit longitudinaledimensionnelleducble LuftundRaumfahrtFaseroptischeLeitungenfr LuftfahrzeugePrfverfahrenTeil205: KabelmahaltigkeitinLngsrichtung ThisEuropeanStandardwasapprovedbyCENon1March2002. CENmembersareboundtoco
10、mplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanS
11、tandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic
12、,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allr
13、ightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3745205:2002EEN3745205:2002(E) 2 Foreword Thisdocument(EN3745205:2002)hasbeenpreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAsso
14、ciation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyDecember2002,andconflicti
15、ngnationalstandardsshallbe withdrawnatthelatestbyDecember2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxe
16、mbourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN3745205:2002(E) 3 1 Scope Thisstandardspecifiesamethodtodeterminethelongitudinaldimensionalstabilityoftheoutersheath/jacket (ifpresent)andsecondarycoatingorbufferofafibreopticcableorfibre. Itshallbeusedtogetherwi
17、thEN3745100. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicatio
18、nsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN 3745100 AerospaceseriesFibresandcables,optical,aircraftuseTestmethods Part100:General 1) EN 3745402 AerospaceseriesFibresandcables,optical,aircraftus
19、eTestmethods Part402:Temperaturecycling 2) 3 Preparationofspecimens 3.1 Specimenlengthstobetestedshallbe(5 0,1)m.Unlessotherwisespecifiedintheproduct standard,theoutersheath(andstrengthmembersifpresent)shallberemovedusingaspecifictoolto exposeapproximately40mmofclad(orcladandcoated/buffered)fibreatb
20、othends.Anycoatingsshallthen beremovedtorevealapproximately20mmofbarefibreasfollows: Figure1 Measurementsshallbetakentodeterminethelengthofexposedfibre(dimensionA)andthedistanceofthe jacketfromthefibreend(dimensionB).Theselengthsshallbemeasuredtoanaccuracyof 0,1mmatboth ends.Thepointsofmeasurementon
21、thecircumferenceofthejackets(and/orbuffers)shallbemarkedusing anysuitablemethod.Thesemeasurementsshallberepeated15minafterthestrippingprocedure,andthe differencebetweenthesemeasurementsandthosetakenpreviously,shallberecorded. 1) Inpreparationatthedateofpublicationofthisstandard 2) PublishedasAECMAPr
22、estandardatthedateofpublicationofthisstandardEN3745205:2002(E) 4 3.2 Thefollowingdetailsshallbespecifiedifnotalreadyincludedintheproductstandard: numberofsamplestobetested; typeofstrippingtool(s)used; maximumpermittedchangeinlengthfordimensionsAandB; seeEN3745402. 4 Apparatus Suitablelengthmeasuring
23、apparatus SeeEN3745402. 5 Method 5.1 Procedure Unlessotherwisespecifiedinthetechnicalspecificationthespecimen(s)shallbesubjectedtotemperature cyclingtestasdefinedinEN3745402. Multiplecyclesmaybespecified.Attheendofthecycles,thesampleshallberemovedandtheexposedfibre lengthsAandBmeasuredasbefore. 5.2
24、Finalmeasurementsandrequirements ThechangeindimensionsAandBshallnotexceedthemaximumvaluesspecified.BS EN 3745-205:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view
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