BS EN 4057-402-2014 Aerospace series Cable ties for harnesses Test methods Life cycle《航空航天系列 铠装用绳索系材 试验方法 生命周期》.pdf

1、BSI Standards PublicationBS EN 4057-402:2014Aerospace series Cable tiesfor harnesses Test methodsPart 402: Life cycleBS EN 4057-402:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4057-402:2014.It supersedes BS EN 4057-402:2006 which is withdrawn.The UK par

2、ticipation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of

3、 a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 83458 5ICS 49.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the a

4、uthority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedBS EN 4057-402:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4057-402 April 2014 ICS 49.060 Supersedes EN 4057-402:2006English Version Aerospace series - Cable ties f

5、or harnesses - Test methods - Part 402: Life cycle Srie arospatiale - Frettes de cblage pour harnais - Mthodes dessais - Partie 402: Dure de vie Luft- und Raumfahrt - Befestigungsbnder fr Leitungsbndel - Prfverfahren - Teil 402: GebrauchszyklusThis European Standard was approved by CEN on 12 October

6、 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtain

7、ed on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-

8、CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,

9、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre:

10、Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4057-402:2014 EBS EN 4057-402:2014EN 4057-402:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Apparatus .4 4 Procedure

11、.5 5 Requirements .6 BS EN 4057-402:2014EN 4057-402:2014 (E) 3 Foreword This document (EN 4057-402:2014) 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 Associatio

12、n, this Standard has received the 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, a

13、t the latest by October 2014, and conflicting national standards shall be withdrawn at the latest by October 2014. 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 an

14、y or all such patent rights. This document supersedes EN 4057-402:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denma

15、rk, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4057-402:

16、2014EN 4057-402:2014 (E) 4 1 Scope This European Standard specifies the procedure to determine the life cycle of cable ties for harnesses under random vibration conditions for aerospace applications. It shall be used together with EN 4057-100. 2 Normative references The following referenced document

17、s are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2266-007, Aerospace series - Cables, electrical, for general purpose - Operatin

18、g temperatures between - 55 C and 200 C - Part 007: UV laser printable multicore jacketed cable - Product standard EN 2267-009, Aerospace series - Cables, electrical, for general purpose - Operating temperatures between - 55 C and 260 C - Part 009: DRA family, single and multicore assembly - Product

19、 standard EN 2267-010, Aerospace series - Cables, electrical, for general purpose - Operating temperatures between - 55 C and 260 C - Part 010: DR family, single UV laser printable - Product standard EN 2591-403, Aerospace series - Elements of electrical and optical connection - Test methods - Part

20、403: Sinusoidal and random vibration EN 4056-001, Aerospace series - Cable ties for harnesses - Part 001: Technical specification EN 4057-100, Aerospace series - Cable ties for harnesses - Test methods - Part 100: General EN 4057-401, Aerospace series - Cable ties for harnesses - Test methods - Part

21、 401: Loop tensile strength 3 Apparatus The vibration system consisting of the vibration machine together with its auxiliary equipment shall be capable of generating a random vibration to meet the requirements of EN 2591-403. A laboratory oven capable of reaching a temperature corresponding to the m

22、aximum working temperature of the cable ties as specified in the appropriate product standard plus 30 C. A refrigerator capable of reaching a minimum rated temperature of the cable ties. A tensile tester as required in EN 4057-401. 4 Procedure 4.1 Vibration test The cable ties be fitted to a cable b

23、undle/harness as shown in Figure 1 and specified in Table 1. The test bundle shall be mounted onto a vibration table using the clamps as shown in Figure 1. BS EN 4057-402:2014EN 4057-402:2014 (E) 5 Set the vibration machine to deliver the required frequencies and intensities conforming to the spectr

24、al shape and density test curve of EN 2591-403, method B, Figure 2, Table 2 and level J. Subject the specimens to the vibration specified for eight hours in each of two mutually perpendicular directions, one of which is parallel to the bundle axis. The cable harness shall be removed from the vibrati

25、on table. 4.2 Temperature cycling Submit the specimen still mounted on the harness to the following temperature cycling test with a transfer time between each condition of not more than two minutes. Place in an oven at the maximum continuous operating temperature increased by (30 50+) C for (30 50+)

26、 min. Transfer to a refrigerator within two minutes and maintain the minimum rated temperature for 30 min to 35 min, this is one cycle. Return the specimen to the hot chamber and repeat for an additional four cycles. On completing the fifth cycle allow the specimen to return to room temperature and

27、condition as specified in EN 4057-100. 4.3 Final inspection The specimen shall be inspected using a 10 magnification aid. Then remove the centre cable from the bundle permitting the bundle to collapse and the cable tie specimens to be removed. The cable insulation shall be inspected for damage under

28、 each cable tie. The cable tie specimens shall then be slid onto an appropriate split mandrel and the loop tensile strength test performed as per EN 4057-401. Key 1 Wire bundle 2 Single cable 3 Clamp or tie and retainer Figure 1 Assembly of cable ties, cable harness and fixture BS EN 4057-402:2014EN

29、 4057-402:2014 (E) 6 Table 1 Cable harness construction Tie minimum length Cable Number of cables in bundle type size Up to 100 mm EN 2266-007 or EN 2267-009 or EN 2267-010 or the cable type specified in the product standard 006 (20 AWG) 19 101 mm to 280 mm 020 (14 AWG) 26 280 mm 050 (10 AWG) 140 5

30、Requirements The performance shall be achieved as required by the technical specification EN 4056-001 and the appropriate product standard. This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and

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