ASD-STAN PREN 4057-402-2012 Aerospace series Cable ties for harnesses Test methods Part 402 Life cycle (Edition P 2).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4057-402 Edition P 2 October 2012 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition

2、 P 1 of February 2001 and will supersede EN 4057-402:2006Descriptors: ENGLISH VERSION Aerospace series Cable ties for 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 Leitungs

3、bndel Prfverfahren Teil 402: Gebrauchszyklus This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been techni

4、cally approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. Afte

5、r examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at na

6、tional level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1 October 2012 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2012 by A

7、SD-STAN prEN 4057-402:2012 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Apparatus .3 4 Procedure .3 5 Requirements .5 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accordance wit

8、h the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4057-402:2012 (E) 3 1 Scope This standard specifies the procedure to determine the life cycle of cable ties for harnesses under random vibration conditions for aerospace app

9、lications. It shall be used together with EN 4057-100. 2 Normative references The following referenced documents 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 (includ

10、ing any amendments) applies. EN 2266-007, Aerospace series Cables, electrical, for general purpose Operating 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 temp

11、eratures between 55 C and 260 C Part 009: DRA family, single and multicore assembly Product 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, Aerosp

12、ace series Elements of electrical and optical connection Test methods Part 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,

13、Aerospace series Cable ties for harnesses Test methods Part 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 ov

14、en capable of reaching a temperature corresponding to the maximum 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 Procedu

15、re 4.1 Vibration test The cable ties be fitted to a cable bundle/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. prEN 4057-402:2012 (E) 4 Set the vibration machine to deliver the required frequencie

16、s and intensities conforming to the spectral 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

17、 harness shall be removed from the vibration 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 temper

18、ature increased by (30 50) C for (30 50) 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 spe

19、cimen to return to room temperature and condition as specified in EN 4057-100. 4.3 Final inspection The specimen shall be inspected using a X10 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 insul

20、ation shall be inspected for damage under 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. prEN 4057-402:2012 (E) 5 Key 1 Wire bundle 2 Single cable 3 Clamp or tie and retainer Figure 1 Assem

21、bly of cable ties, cable harness and fixture 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 Requirements The performance shall be achieved as required by the technical specification EN 4056-001 and the appropriate product standard.