ASD-STAN PREN 3745-505-2016 Aerospace series Fibres and cables optical aircraft use Test methods Part 505 Cable tensile strength (Edition P 2).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 3745-505 Edition P 2 October 2016 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: Supersedes editio

2、n P 1 of October 2006 and will supersede EN 3745-505:2007 Descriptors: ENGLISH VERSION Aerospace series Fibres and cables, optical, aircraft use Test methods Part 505: Cable tensile strength Luft- und Raumfahrt Faseroptische Leitungen fr Luftfahrzeuge Prfverfahren Teil 505: Zugfestigkeit Srie arospa

3、tiale Fibres et cbles optiques usage aronautique Mthodes dessais Partie 505 : Tenue en traction 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

4、the European Aerospace Industry. It has been technically 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 functional

5、ly, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, the ASD-STAN prEN will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard

6、(EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. ASD-STAN Technical Committee approves that: “This document is published by ASD-STAN for the needs of th

7、e European Aerospace Industry. The use of this standard is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” ASD-STAN reviews each standard and technical report at least ever

8、y five years at which time it may be revised, reaffirmed, stabilized or cancelled. ASD-STAN invites you to send your written comments or any suggestions that may arise. All rights reserved. No parts of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by

9、 any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of ASD-STAN. Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-stan.org/ Edition approved for publication 1st October 2016 Comments should be sent within six months after the

10、 date of publication to ASD-STAN Electrical Domain Copyright 2016 ASD-STAN prEN 3745-505:2016 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Preparation of specimens 3 4 Apparatus. 3 5 Method 4 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs

11、Electrical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 3745-505:2016 (E) 3 1 Scope This standard specifies a method for measuring the tensile properties o

12、f a fibre optic cable. It shall be used together with EN 3745-100. 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 docu

13、ment (including any amendments) applies. EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General EN 3745-201, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 201: Visual examination EN 3745-301, Aerospace series Fibres and cab

14、les, optical, aircraft use Test methods Part 301: Attenuation EN 60794 (all parts), Optical fibre cables 3 Preparation of specimens Prepare test sample in accordance with EN 60794, Method E1. Fibres coated by UV-curable acrylic resin can be cleaned (e.g. from cable filling compounds), without causin

15、g damage to the coating using any cleaning agent recommended by the manufacturer of the fibres. However the use of chlorine-based cleaning agents should be absolutely avoided, since they can attack the coating even after their use and in vapour phase. If not at standard test conditions, the specimen

16、s shall be subjected to standard test conditions and stabilized at these conditions for 24 h as defined in EN 3745-100. Attenuation should be measured, in accordance with EN 3745-301 method C, before the test. Sample length can be more than 100 m for test A and 5 m for test B. 4 Apparatus The appara

17、tus shall comprise: Fibre and cable attenuation test apparatus as defined in EN 3745-301; Tensile test apparatus in accordance with EN 60794, Method E1 (for test A); Tensile test apparatus capable of measuring the specified elongation to an accuracy of 1 % (for test B). prEN 3745-505:2016 (E) 4 5 Me

18、thod 5.1 General For measuring cable tensile strength method A or B can be used. Unless otherwise stated, the test conditions shall be standard atmospheric conditions. 5.2 Method A (using transfer device and chuck drum) The test shall be carried out in accordance with EN 60794, Method E1. 5.3 Method

19、 B (using clamping device) The cable shall be pulled between two mandrels. The initial length of the test specimen between the mandrels (min 50 mm diameter) shall be (250 1) mm. The pulling speed shall be (50 10) mm/mn. The cable shall be wrapped at least three (3) turns on each mandrel. NOTE There

20、must be sufficient grip between the test specimen and mandrel to avoid relative movement between cable and mandrel during test. 5.4 Final measurements and requirements If specified the value for the following shall conform to those given in the product standard (see Table 1): Table 1 Object Test met

21、hod Aspect Visual examination as defined in EN 3745-201 A and B Attenuation Maximum recorded fibre strain at maximum tensile rating Maximum attenuation change at maximum tensile rating Maximum attenuation change before and after test (without load) A A and B A and B Mechanical characteristics Maximum load up to optical discontinuity Breaking load for the complete cable A and B A and B