1、BRITISH STANDARD AEROSPACE SERIESBS EN3745-503:2005Fibres and cables, optical, aircraft use Test methods Part 503: Scrape abrasionThe European Standard EN 3745-503:2005 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g5
2、4g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3745-503:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48640 0National forewordThis
3、 British Standard is the official English language version of EN 3745-503:2005. 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 equipment, which
4、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 publications referred to in this document may be found in the BSI Catalogue under the sectio
5、n 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 necessary provisions of a contract. Users are responsible for its correct application. Comp
6、liance 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 UK interests informed; monitor related in
7、ternational 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 cover.The BSI copyright notice displayed in this document indicates when the document was
8、 last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3745-503November 2005ICS 49.060English VersionAerospace series - Fibres and cables, optical, aircraft use - Testmethods - Part 503: Scrape abrasionSrie arospatiale - Fibres et cble
9、s optiques usagearonautique - Mthodes dessais - Partie 503 : Abrasionpar raclageLuft- und Raumfahrt - Faseroptische Leitungen frLuftfahrzeuge - Prfverfahren - Teil 503:AbriebbestndigkeitThis European Standard was approved by CEN on 19 September 2005.CEN members are bound to comply with the CEN/CENEL
10、EC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without 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
11、member.This European Standard exists in three official versions (English, French, German). A version in any other language made 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
12、 are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United K
13、ingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue 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 3745-503:2005: E2 Co
14、ntents Foreword 3 1 Scope .4 2 Normative references .4 3 Preparation of specimens 4 4 Apparatus 4 5 Method .6 EN 3745-503:20053 Foreword This European Standard (EN 3745-503:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries
15、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 the status of a national s
16、tandard, 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 subject of patent rights. CEN
17、 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, Cyprus, Czech Republic, Den
18、-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 3745-503:20054 1 Scope This standard specifies a method for test
19、ing the resistance of an optical to scrape abrasion. 2 Normative references The following referenced documents are indispensable 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 (includi
20、ng 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: General1)EN 3745-201, Aerospace series Fibres and cables, optical, airc
21、raft 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 The specimens shall be prepared as specified in EN 3745-100. 3.2 The following details shall be specified if not
22、 already included in the product standard: load to be applied; length of the specimen: (0,75 0,05) m; maximum permissible variation of attenuation; number of cycles; intervals for visual examination of specimen. 4 Apparatus The apparatus shall comprise: a Light Launch System (LLS) as defined in EN 2
23、591-100; a Light Detector System (LDS) as defined in EN 2591-100; a climatic chamber; a test fixture capable of applying the scrape abrasion test. A typical arrangement is shown in Figure 1. The apparatus shall consist of a device designed to wear the surface of the jacket parallel to the cable axis
24、, over a length equal to (10 1) mm at a frequency of (55 5) cycles/min. 1) In preparation at the date of publication of this standard. EN 3745-503:20055 Dimensions in millimetres Key 1 Mechanism 2 Mass 3 Needle holder 4 Cable clamp 5 Cable on test 6 Travel (10 1) 7 Anvil (low thermal mass) 8 Counter
25、 mass Figure 1 EN 3745-503:20056 5 Method This test shall be performed at ambient temperature and at the maximum operating temperature of the cable. One cycle consists of a backward and forward movement of the needle. Scrape abrasion resistance shall be defined as the number of complete cycles befor
26、e the sheath is penetrated. The attenuation shall be monitored throughout the test in accordance with EN 3745-301, method C. 5.1 Procedure Connect the specimen ends to the LLS and LDS. Secure the specimen to the support by means of a cable clamp, apply a specified load to the needle holder. Zero the
27、 LDS to obtain the reference level. Perform the specified number of cycles. Repeat the test a further five times moving the cable 100 mm and rotating through 90 between each test al-ways in the same direction. 5.2 Final measurements and requirements Examine the test specimen for damage in accordance
28、 with EN 3745-201: Visual examination. EN 3745-503:2005blankBS EN 3745-503:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the internation
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