1、BRITISH STANDARD AEROSPACE SERIESBS EN3745-402:2005Fibres and cables, optical, aircraft use Test methods Part 402: Temperature cyclingThe European Standard EN 3745-402:2005 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g
2、54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Wed Aug 23 03:46:28 BST 2006, Uncontrolled Copy, (c) BSIBS EN 3745-402:2005This British Standard was published under the authority of the Standards Poli
3、cy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48645 1National forewordThis British Standard is the official English language version of EN 3745-402:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic te
4、chnology, 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 pub
5、lications 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 ne
6、cessary 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 in
7、terpretation, 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 5 and a back cover.The BSI copyrigh
8、t 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 03:46:28 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3745-402November 2005ICS 49.
9、060English VersionAerospace series - Fibres and cables, optical, aircraft use - Testmethods - Part 402: Temperature cyclingSrie arospatiale - Fibres et cbles optiques usagearonautique - Mthodes dessais - Partie 402 : Cyclage entempratureLuft- und Raumfahrt - Faseroptische Leitungen frLuftfahrzeuge -
10、 Prfverfahren - Teil 402: TemperaturzyklusThis 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 without any alteration
11、. 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 made by translationun
12、der 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, Greece, Hungary, Icel
13、and, 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: rue de Stassart, 36
14、B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3745-402:2005: ELicensed Copy: Wang Bin, na, Wed Aug 23 03:46:28 BST 2006, Uncontrolled Copy, (c) BSI2 Contents Foreword 3 1 Scope .4 2 Normative references .4 3 Pr
15、eparation of specimens 4 4 Apparatus 4 5 Method .5 EN 3745-402:2005Licensed Copy: Wang Bin, na, Wed Aug 23 03:46:28 BST 2006, Uncontrolled Copy, (c) BSI3 Foreword This European Standard (EN 3745-402:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AEC
16、MA-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 Standard shall be given
17、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 document may be the sub
18、ject 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: Austria, Belgium, C
19、yprus, 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 3745-402:2005Licensed Copy: Wang Bin,
20、na, Wed Aug 23 03:46:28 BST 2006, Uncontrolled Copy, (c) BSI4 1 Scope This standard specifies a method for temperature cycling of an optical cable. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer-ences, only the editio
21、n cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General1)3 Preparation of specimens 3.1 The specimens shall be prepared according t
22、o the product standard. lf 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 3745-100. The specimens shall be loosely coiled with the bend radius not smaller than specified storage radius. 3.
23、2 Unless specified in the technical specification, the following details shall be stated: high/low temperatures; duration of extreme temperatures and rates of change; storage bend radius; number of cycles. 4 Apparatus The apparatus shall comprise: a climatic chamber capable of temperature control of
24、 2 C. 1) In preparation at the date of publication of this standard. EN 3745-402:2005Licensed Copy: Wang Bin, na, Wed Aug 23 03:46:28 BST 2006, Uncontrolled Copy, (c) BSI5 5 Method Place the specimen in the climatic chamber (at time to). Bring the temperature level to TAvalue during period (t1-tp).
25、Maintain at TAtemperature during period (t2-t1). Change the temperature to TBduring period (t3-t2). Maintain at Totemperature during period (t4-t3). Change the temperature to ambient temperature during period (t5-t4). Maintain at ambient temperature during period (t6-t5). These 7 phases constitute o
26、ne basic cycle (see Figure 1) whose parameters are given in the product specification. Unless otherwise specified in the product standard: Rate of temperature variation: 5 C/min (t2-t1) = (t4-t3) = (t6-t5) = 30 min Figure 1 Basic cycle EN 3745-402:2005Licensed Copy: Wang Bin, na, Wed Aug 23 03:46:28
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