1、ASD STANDARD NORME ASD ASD NORM prEN 3745-505 Edition P 1 October 2006 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 763 3565 - www.asd-stan.orgICS: 49.060 Descriptors: ENGLISH VERSION Ae
2、rospace series Fibres and cables, optical, aircraft use Test methods Part 505: Cable tensile strength Srie arospatiale Fibres et cbles optiques usage aronautique Mthodes dessais Partie 505 : Tenue en traction Luft- und Raumfahrt Faseroptische Leitungen fr Luftfahrzeuge Prfverfahren Teil 505: Zugfest
3、igkeit 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 technically approved by the experts of the c
4、oncerned 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. After examination and review by users and
5、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 national level by giving the EN the stat
6、us of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 31 October 2006 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2006 by ASD-STAN prEN 3745-505:20062 Contents
7、Page Foreword2 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 Electrical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in A
8、SD-STANs General Process Manual, this standard has received approval for Publication. prEN 3745-505:20063 1 Scope This standard specifies a method for measuring the tensile properties of a fibre optic cable. It shall be used together with EN 3745-100. 2 Normative references The following referenced
9、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 (including any amendments) applies. EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Tes
10、t methods Part 100: General. 1)EN 3745-201, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 201: Visual examination. EN 3745-301, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 301: Attenuation. EN 187000, Method 501, Generic specification for
11、 optical fibre cables. 3 Preparation of specimens Prepare test sample in accordance with EN 187000, Method 501. Sample length can be more than 100 m for test A and 5 m for test B. 4 Apparatus The apparatus shall comprise: Fibre and cable attenuation test apparatus as defined in EN 3745-301; Tensile
12、test apparatus in accordance with EN 187000, Method 501( for test A); Tensile test apparatus capable of measuring the specified elongation to an accuracy of 1 % (for test B). 1) In preparation at the date of publication of this standard. prEN 3745-505:20064 5 Method 5.1 General For measuring cable t
13、ensile 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 187000, Method 501. 5.3 Method B (using clamping device) The cable
14、 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 3 turns on each mandrel. NOTE There must be sufficient grip between the test spe
15、cimen 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 Method Aspect Visual examination as defined in
16、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
