EN 3745-512:2005
(Main)Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 512: Flexure endurance
Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 512: Flexure endurance
This standard specifies a method for testing flexure endurance of the cable when it is subjected to alternating flexing.
Luft- und Raumfahrt - Faseroptische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil 512: Biegefestigkeit
Diese Norm legt ein Verfahren zur Prüfung der Biegewechselfestigkeit der Leitung beim Hin- und Herbiegen fest.
Série aérospatiale - Fibres et câbles optiques à usage aéronautique - Méthodes d'essais - Partie 512 : Résistance à la flexion
Aeronavtika – Optična vlakna in kabli za uporabo v zračnih plovilih – Preskusne metode – 512. del: Upogibna trdnost
General Information
- Status
- Published
- Publication Date
- 15-Nov-2005
- Withdrawal Date
- 30-May-2006
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2 - Electrical
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 16-Nov-2005
- Completion Date
- 16-Nov-2005
Relations
- Effective Date
- 15-Oct-2025
Overview
EN 3745-512:2005 - Aerospace series: Fibres and cables, optical, aircraft use - Test methods - Part 512: Flexure endurance. Published by CEN and approved 19 September 2005, this standard specifies a reproducible method for assessing the flexure endurance of optical cables used in aircraft when subjected to alternating flexing. The test evaluates durability and stability of optical attenuation under repeated bending cycles.
Key topics and technical requirements
- Scope: Endurance testing of aircraft optical cables under alternating flexure to quantify change in attenuation and detect damage.
- Specimen preparation: As per EN 3745-100. Default specimen length is 1 m; default test mass M = 300 g. Test parameters that must be specified (if different from defaults) include specimen type, number of specimens, length, mass M, mandrel diameter D, static bend radius, allowable attenuation variation, and number of cycles.
- Apparatus:
- Light Launch System (LLS) and Light Detector System (LDS) as defined in EN 2591-100.
- Test fixture with mandrels and rotating centre of rotation; spacing between mandrels = maximum cable diameter.
- Counter to record cycles.
- Motion and speed: Rotation at a uniform rate of (18 ± 2) cycles/min with cable vertical. One cycle = 90° left → return vertical → 90° right → return vertical.
- Test procedure:
- Install specimen, apply specified load M, perform preliminary run to avoid resonance, connect LLS/LDS, zero the LDS (reference), reset counter, run the specified number of cycles.
- Monitor attenuation continuously in accordance with EN 3745-301 (method C).
- Acceptance criteria:
- Visual inspection per EN 3745-201.
- Change in attenuation must be less than the specified maximum permissible value defined for the product.
Applications and users
- Intended for aerospace cable manufacturers, optical-fibre harness designers, test laboratories, certification bodies and procurement/specification engineers.
- Practical uses:
- Qualification of aircraft optical cables for use in moving or vibration-prone locations (control surfaces, rotating joints, harness flex points).
- Verifying long-term attenuation stability under repeated bending.
- Supporting design decisions for mandrel sizing, bend radii and mechanical load limits.
- Compliance evidence for aerospace procurement and certification.
Related standards
- EN 2591-100 - Light Launch/Detector systems (LLS/LDS)
- EN 3745-100 - General (specimen preparation)
- EN 3745-201 - Visual examination
- EN 3745-301 - Attenuation measurement (method C)
Keywords: EN 3745-512, flexure endurance, aerospace optical cable test, optical fibre cable bending test, attenuation stability, LLS, LDS, mandrel diameter.
Frequently Asked Questions
EN 3745-512:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 512: Flexure endurance". This standard covers: This standard specifies a method for testing flexure endurance of the cable when it is subjected to alternating flexing.
This standard specifies a method for testing flexure endurance of the cable when it is subjected to alternating flexing.
EN 3745-512:2005 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3745-512:2005 has the following relationships with other standards: It is inter standard links to prEN 3745. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 3745-512:2005 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2006
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Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 512:
Flexure endurance
Luft- und Raumfahrt - Faseroptische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil
512: Biegefestigkeit
Série aérospatiale - Fibres et câbles optiques a usage aéronautique - Méthodes d'essais
- Partie 512 : Résistance a la flexion
Ta slovenski standard je istoveten z: EN 3745-512:2005
ICS:
49.060
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 3745-512
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2005
ICS 49.060
English Version
Aerospace series - Fibres and cables, optical, aircraft use - Test
methods - Part 512: Flexure endurance
Série aérospatiale - Fibres et câbles optiques à usage Luft- und Raumfahrt - Faseroptische Leitungen für
aéronautique - Méthodes d'essais - Partie 512 : Résistance Luftfahrzeuge - Prüfverfahren - Teil 512: Biegefestigkeit
à la flexion
This European Standard was approved by CEN on 19 September 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3745-512:2005: E
worldwide for CEN national Members.
Contents
Foreword .3
1 Scope .4
2 Normative references .4
3 Preparation of specimens .4
4 Apparatus .5
5 Method .6
Foreword
This European Standard (EN 3745-512:2005) has been prepared by the European Association of Aerospace
Manufacturers - Standardization (AECMA-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-
ceived the approval of the National Associations and the Official Services of the member countries of AECMA,
prior to its presentation to CEN.
This E
...
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