1、BRITISH STANDARD AEROSPACE SERIESBS EN3745-513:2005Fibres and cables, optical, aircraft use Test methods Part 513: Crush resistanceThe European Standard EN 3745-513:2005 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g
2、54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSIBS EN 3745-513:2005This British Standard was published under the authority of the Standards Policy
3、and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48648 6National forewordThis British Standard is the official English language version of EN 3745-513:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic techn
4、ology, to Subcommittee ACE/6/-/10, Aerospace Fibre optic systems and equipment, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European public
5、ations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the neces
6、sary provisions of a contract. Users are responsible for its 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 inter
7、pretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cov
8、er.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3745-513N
9、ovember 2005ICS 49.060English VersionAerospace series - Fibres and cables, optical, aircraft use - Testmethods - Part 513: Crush resistanceSrie arospatiale - Fibres et cbles optiques usagearonautique - Mthodes dessais - Partie 513 : Rsistance lcrasementLuft- und Raumfahrt - Faseroptische Leitungen f
10、rLuftfahrzeuge - Prfverfahren - Teil 513:QuerdruckfestigkeitThis European Standard was approved by CEN on 19 September 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard with
11、out any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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
12、e by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Gre
13、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: ru
14、e de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3745-513:2005: ELicensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSI2 Contents Foreword 3 1 Scope .4 2 Normative
15、references .4 3 Preparation of specimens 4 4 Apparatus 4 5 Method .6 EN 3745-513:2005Licensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSI3 Foreword This European Standard (EN 3745-513:2005) has been prepared by the European Association of Aerospace Manufacturers - St
16、andardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-ceived the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standa
17、rd shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2006, and conflicting national standards shall be withdrawn at the latest by May 2006. Attention is drawn to the possibility that some of the elements of this docum
18、ent 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 implement this European Standard: A
19、ustria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 3745-513:2005License
20、d Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSI4 1 Scope This standard specifies a method to determine the ability of an optical fibre cable to withstand crushing under specified environmental conditions. 2 Normative references The following referenced documents are in
21、dispensable for the application of this document. For dated refer-ences, only the edition 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
22、Part 100: General EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General1)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
23、 use Test methods Part 301: Attenuation 3 Preparation of specimens 3.1 If not 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 3745-100. 3.2 The following details shall be specified if not already i
24、ncluded in the product standard: temperatures at which test is to be carried out; humidity at which test is to be carried out; number and length of specimens; the compressive force to be applied; diameter of mandrel if used; maximum permissible variation in attenuation during and after test; duratio
25、n of application of the load. 4 Apparatus The apparatus shall allow a sample to be crushed between a flat steel base plate and a movable steel plate which applies the crushing force uniformly over a 100 mm length of the sample. The plates shall be suitably radiused to prevent sharp edges digging int
26、o the specimen. A mandrel can be used instead of the steel plate if 1) In preparation at the date of publication of this standard. EN 3745-513:2005Licensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSI5 required. Suitable apparatus is shown in Figure 1. The Light Launc
27、h System (LLS) and the Light Detector System (LDS) are defined in EN 2591-100. A suitable oven capable of temperature control 2 C, and if necessary, capable of controlling the relative humidity during the test. Dimensions in millimetres Side view End view Plate Mandrel Key 1 Guide 2 Load 3 Specimen
28、4 Mandrel Figure 1 Test methods EN 3745-513:2005Licensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSI6 5 Method 5.1 Procedure The variation of attenuation (EN 3745-301, method C) shall be monitored continuously throughout the test. Connect the specimen to the LLS and
29、the LDS. Place the specimen in the test fixture. With no load applied, obtain a reference power measurement on the LDS. The load shall then be applied gradually avoiding shock to the specimen. Maintain the load for the specified time. Take a power measurement on the LDS. Remove the load. When the lo
30、ad has been fully removed allow the specimen to recover for 15 min. Measure the final attenuation in accordance with EN 3745-301, method C. 5.2 Final measurements and requirements After removal of the load the following tests should be carried out: EN 3745-201: Visual examination; EN 3745-301: Atten
31、uation, method C, maximum change in attenuation shall be within that specified. EN 3745-513:2005Licensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSIblankLicensed Copy: Wang Bin, na, Wed Aug 23 04:04:46 BST 2006, Uncontrolled Copy, (c) BSIBS EN 3745-513:2005BSI389 Chi
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