1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58optical connection Test methods Part 420: Mechanical strength of rear accessoriesThe European Stand
2、ard EN 2591-420:2006 has the status of a British StandardICS 49.060Aerospace series Elements of electrical and BRITISH STANDARDBS EN 2591-420:2006BS EN 2591-420:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2006 BSI 2006ISBN
3、0 580 49435 7Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. National
4、forewordThis British Standard was published by BSI. It is the UK implementation of EN 2591-420:2006. It supersedes BS EN 2591-420:2001 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Su
5、bcommittee ACE/6/-/3, Aerospace Connectors.A list of organizations represented on ACE/6/-/3 can be obtained on request to its secretary.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2591-420July 2006ICS 49.060 Supersedes EN 2591-420:2001 English VersionAerospace series - Elements of electrical a
6、nd optical connection- Test methods - Part 420: Mechanical strength of rearaccessoriesSrie arospatiale - Organes de connexion lectrique etoptique - Mthodes dessais - Partie 420 : Tenuemcanique des accessoires arrireLuft- und Raumfahrt - Elektrische und optischeVerbindungselemente - Prfverfahren - Te
7、il 420:Mechanische Festigkeit der rckseitigen ZubehrteileThis European Standard was approved by CEN on 27 April 2006.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
8、 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 made by tr
9、anslationunder 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, Hu
10、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:
11、rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2591-420:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Preparation of specimens.4 4 Apparatus .4 5 Method 4 6 Requiremen
12、ts.7 EN 2591-420:20063 Foreword This European Standard (EN 2591-420:2006) has been prepared by 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 t
13、he approval of the National Associations and the Official Services of the member countries of ASD, 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 January 2007, a
14、nd conflicting national standards shall be withdrawn at the latest by January 2007. Attention 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. Th
15、is document supersedes EN 2591-420:2001. 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, Denmark, Estonia, Finland, France, Germany, Greece, Hun
16、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2591-420:2006 4 1 Scope This standard specifies a method of determining the mechanical strength of rear acces
17、sories used on elements of electrical and optical connection subjected to bending, tensile and torsional forces. It shall be used together with EN 2591-100. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only th
18、e 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 Part 100: General. EN 2591-101, Aerospace series Elements of electrical and opti
19、cal connection Test methods Part 101: Visual examination. 3 Preparation of specimens Unless specified in the technical specification, the following details shall be stated: mounting and locking of specimens; for phase A, bending moment; for phase B, tensile force; for phase C, torsional moment; for
20、phase D, tightening torque; requirements. 4 Apparatus Equipment for applying and measuring the bending, tensile, torsional forces and torques. Fixture simulating the rear part of a connector. 5 Method The mounted specimens shall be subjected to the following test sequence unless otherwise stated. Du
21、mmy shells may be used. EN 2591-420:20065 a) Phase A: bending test With the specimens placed horizontally in the test fixture, bending moments shall be applied successively to the end of the accessory, see Figures 1, 2 and 3. The forces F1and F2and F3shall be increased at a rate not exceeding 20 N/s
22、 until the specified value is reached and maintained for 1 min. Figure 1 Bending moment (straight accessory) Figure 2 Bending moment (90 accessory) Figure 3 Bending moment (90 accessory) F3EN 2591-420:2006 6 b) Phase B: tensile test With the specimens placed horizontally in the test fixture, tensile
23、 force F shall be applied to the end of the accessory, see Figure 4 or Figure 5. It shall be increased at a rate not exceeding 20 N/s until the specified value is reached and maintained for 1 min. Figure 4 Tensile force (straight accessory) Figure 5 Tensile force (90 accessory) c) Phase C: torsion t
24、est With the specimens placed horizontally in the test fixture, the torsional moment C shall be applied to the end of the accessory, see Figure 6 or Figure 7. This torsional moment shall be increased at a rate not exceeding 0,1 Nm/s until the specified value is reached and maintained for one minute.
25、 Figure 6 Torsional moment (straight accessory) Figure 7 Torsional moment (90 accessory) EN 2591-420:20067 d) Phase D: torsion test on the mating thread With the specimens placed in the test fixture, a torque shall be applied to the coupling nut at a rate of 1 0,1 Nm/s until the specified value is r
26、eached and maintained for one minute. 6 Requirements At the end of phase D, prior to removal, there shall be no play between the accessory and the test fixture. The untightening torque shall comply with the specified value. After removal, the specimens shall be examined visually according to EN 2591
27、-101. No deformation shall be observed. EN 2591-420:2006 BS EN BSI389 Chiswick High RoadLondonW4 4AL2591-420:2006BSI 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 international
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