ASD-STAN PREN 3745-515-2010 Aerospace series Fibres and cables optical aircraft use Test methods Part 515 Buffer insertion force (Edition P 1).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 3745-515 Edition P 1 December 2010 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: Descriptors: ENGL

2、ISH VERSION Aerospace series Fibres and cables, optical, aircraft use Test methods Part 515: Buffer insertion force Srie arospatiale Fibres et cbles optiques usage aronautique Mthodes dessais Partie 515 : Force dinsertion de la gaine intermdiaire Luft- und Raumfahrt Faseroptische Leitungen fr Luftfa

3、hrzeuge Prfverfahren Teil 515: Einsteckkraft der Beschichtung 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. I

4、t 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 functionally, without re-identification of t

5、he standard. After 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 imple

6、ment 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. Edition approved for publication 31 December 2010 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain

7、Copyright 2010 by ASD-STAN prEN 3745-515:2010 (E) 2 Contents Page Foreword. 2 1 Scope . 3 2 Normative references . 3 3 Preparation of specimens 3 4 Apparatus 3 5 Method . 5 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and vot

8、es 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 3745-515:2010 (E) 3 1 Scope This standard specifies procedures for the practical measurement of the force required to move the buffer a speci

9、fied distance relative to the outer jacket. 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 (including any ame

10、ndments) applies. EN 2591-100, Aerospace series Elements of electrical and optical connection Test methods Part 100: General EN 2591-601, Aerospace series Elements of electrical and optical connection Test methods Part 601: Optical elements Insertion loss EN 2591-602, Aerospace series Elements of el

11、ectrical and optical connection Test methods Part 100: Optical elements Variation of attenuation and optical discontinuity EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General 3 Preparation of specimens 3.1 The fibre ends shall be terminated with term

12、ini designed for semi-loose structure fibre optic cable. 3.2 The length of fibre to be tested shall be in accordance with the applicable product standard. 3.3 The number of specimens shall be in accordance with the applicable product standard. 4 Apparatus 4.1 A micrometre with at least 0,1 mm resolu

13、tion shall be used to measure the buffer movement over the distance specified in the applicable product standard. 4.2 A force gauge with at least 0,1 N resolution, capable of measuring the applicable force required to move the buffer the distance specified in the applicable product standard. 4.3 A m

14、echanical fixture which will hold the terminated specimen in the compression apparatus and not permit any horizontal or vertical movement of the terminus body. A typical arrangement is shown in Figure 1. prEN 3745-515:2010 (E) 4 Key 1 Compression distance 2 Force applied 3 Terminus ferrule 4 Terminu

15、s fixture 5 Clamp 6 Fibre optic cable (terminated on one end) Figure 1 .45 mm N1 2 3 4 5 6 prEN 3745-515:2010 (E) 5 5 Method 5.1 Procedure 1) Install the terminus, on both cable ends. 2) Cut the assembly at the midway point and then clamp the unterminated end with sufficient force to prevent buffer

16、movement. 3) Attach the terminated end of the cable to the compression apparatus. 4) Apply sufficient force to compress the ferrule the distance specified in the product standard and record the force required. 5) Repeat steps 3) and 4) on the other terminated end of cable assembly. 5.2 Final measurements and requirements Record the average of the measured force to move the buffer the specified distance on each specimen end. The average shall not exceed the value in the applicable product standard.