SIST EN 3745-506:2019

Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 506: Impact resistance

This document specifies a method to determine the ability of an optical fibre or cable to withstand impact under specified environmental conditions.

Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prüfverfahren - Teil 506: Schlagfestigkeit

Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais - Partie 506: Résistance à l'impact

Le présent document spécifie une méthode pour déterminer la capacité d'un câble à fibre optique à résister à l'impact dans des conditions environnementales spécifiées.

Aeronavtika - Optična vlakna in kabli za uporabo v zračnih plovilih - Preskusne metode - 506. del: Odpornost proti udarcu

Ta evropski standard določa metodo za ugotavljanje zmožnosti optičnega vlakna ali kabla, da prenese udarce pod določenimi okoljskimi pogoji.

General Information

• Status: Published
• Publication Date: 09-Dec-2018
• ICS: 33.180.10 - Fibres and cables
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Dec-2018
• Due Date: 10-Feb-2019
• Completion Date: 10-Dec-2018
• Ref Project: EN 3745-506:2018 - Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 506: Impact resistance

Relations

• Replaces: SIST EN 3745-506:2009 - Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 506: Impact resistance
• Effective Date: 05-Dec-2018
• Revised: oSIST prEN 3745-100:2025 - Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 100: General
• Effective Date: 15-Oct-2025
• Revised: SIST EN 3745-506:2009 - Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 506: Impact resistance
• Effective Date: 10-Aug-2016

Overview

EN 3745-506:2018 - Aerospace series: Fibres and cables, optical, aircraft use - Test methods - Part 506: Impact resistance - specifies a laboratory method to determine the ability of an optical fibre or cable used in aircraft to withstand mechanical impact under defined environmental conditions. The standard defines specimen preparation, test apparatus, test procedure and acceptance criteria based on measurable changes in optical attenuation and visual condition.

Key topics and requirements

• Scope: Evaluates impact resistance of optical fibres and cables for aerospace/aircraft use.
• Specimen preparation: Stabilize specimens at standard test conditions for 24 hours per EN 3745-100. Clean UV‑curable acrylic coatings only with manufacturer‑recommended agents; avoid chlorine‑based cleaners.
• Pre/post measurements: Measure attenuation before and immediately after impact using EN 3745-301 method C. Perform visual examination per EN 3745-201.
• Test apparatus: Drop‑weight/hammer impact rig that transmits load to a cable fixed on a steel baseplate. Includes options for:
  • Single/limited drops (Figures 1 & 2 style fixtures)
  • Multiple drops (rotary actuator or pulley arrangement shown in Figure 3)
  • A striking face with a specified radius R; when fixed to the weight, include its mass in impact energy calculations.
• Test parameters set by product specification: temperature, number/length of specimens, weight and drop height (or impact energy), striking face radius R, number/location of impacts, and permissible change in attenuation.
• Acceptance: Attenuation change must be less than the value specified in the applicable product standard; visual defects are evaluated against EN 3745-201 criteria.

Applications and users

• Who uses it: Aerospace OEMs, cable and fibre manufacturers, test laboratories, certification bodies and maintenance/repair organizations involved in aircraft electrical/optical systems.
• Practical uses:
  • Qualifying optical cables for installation in airframes and avionics enclosures.
  • Verifying robustness of cable designs against in-service impacts (tool drops, handling, foreign object strikes).
  • Supporting product standards and procurement specifications that require defined impact resistance performance.

Related standards

• EN 3745-100 - General test requirements for optical fibres and cables (aerospace)
• EN 3745-201 - Visual examination
• EN 3745-301 - Attenuation test methods (method C referenced)
• EN 2591-100 - Light Launch/Detector Systems for optical testing

Keywords: EN 3745-506:2018, impact resistance, optical fibre test, aerospace cable testing, optical cable impact test, attenuation measurement, aircraft optical fibres.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prüfverfahren - Teil 506: SchlagfestigkeitSérie aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais - Partie 506: Résistance à l'impactAerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 506: Impact resistance49.060Aerospace electric equipment and systems33.180.10Fibres and cablesICS:Ta slovenski standard je istoveten z:EN 3745-506:2018SIST EN 3745-506:2019en,fr,de01-februar-2019SIST EN 3745-506:2019SLOVENSKI
STANDARDSIST EN 3745-506:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3745-506
November
t r s z ICS
v {ä r x râ
v {ä r { r Supersedes EN
u y v wæ w r xã t r r {English Version
Aerospace series æ Fibres and cablesá opticalá aircraft use æ Test methods æ Part
w r xã Impact resistance Série aérospatiale æ Fibres et câbles optiques à usage aéronautique æ Méthodes d 5essais æ Partie
w r x ã Résistance à l 5impact
Luftæ und Raumfahrt æ Faseroptische Leitungen für Luftfahrzeuge æ Prüfverfahren æ Teil
w r xã Schlagfestigkeit This European Standard was approved by CEN on
t x February
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
u y v wæ w r xã t r s z ESIST EN 3745-506:2019

Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Preparation of specimens . 4 4 Apparatus. 5 5 Method . 8
European foreword This document (EN 3745-506:2018) 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 Association, 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 document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2019, and conflicting national standards shall be withdrawn at the latest by May 2019. 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 any or all such patent rights. This document supersedes EN 3745-506:2009. 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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 3745-506:2019

1 Scope This document specifies a method t
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