EN 4504:2013

Aerospace series - Non-metallic materials, Textiles - Test method - Determination of flexibility of narrow fabrics

This standard defines the requirements for the determination of the flexibility of narrow fabrics.

Luft- und Raumfahrt - Nichtmetallische Werkstoffe, Textilien - Prüfverfahren - Bestimmung der Flexibilitat von Schmalgeweben

Diese Norm legt die Anforderungen an die Bestimmung der Flexibilität von Schmalgeweben fest.

Série aérospatiale - Matériaux non-métalliques, Textiles - Méthode d'essai - Détermination de la flexibilité des tissus étroits

La présente Norme européenne définit les exigences pour la détermination de la flexibilité des tissus étroits.

Aeronavtika - Nekovinski materiali - Tekstilije - Preskusne metode - Določanje fleksibilnosti ozkih tkanin

General Information

• Status: Published
• Publication Date: 20-Aug-2013
• Withdrawal Date: 27-Feb-2014
• ICS: 49.025.60 - Textiles
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4 - Metallic
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 21-Aug-2013
• Completion Date: 21-Aug-2013
• Ref Project: SIST EN 4504:2014 - Aerospace series - Non-metallic materials, Textiles - Test method - Determination of flexibility of narrow fabrics

Overview

EN 4504:2013 is a European standard developed by CEN that specifies the test method for determining the flexibility of narrow fabrics used in aerospace applications. These fabrics, classified as non-metallic materials, play a crucial role in aerospace manufacturing where performance, durability, and compliance with strict quality standards are essential. This standard provides a clear, repeatable procedure to measure fabric flexibility, ensuring reliability and consistency across aerospace textile evaluations.

Key Topics

• Scope: Defines requirements for evaluating the pliancy of narrow-woven fabrics used in aerospace, crucial for assessing material performance under operational conditions.
• Test Principle: Measures fabric flexibility by placing the narrow fabric specimen on a specific wooden block with a horizontal and inclined surface, evaluating how the fabric bends and protrudes.
• Test Conditions:
  • Samples are conditioned in a standard atmosphere with 65 ± 2% relative humidity and 20 ± 2°C temperature.
  • Specimens are placed between glass sheets for at least 2 hours before testing to stabilize conditions.
• Apparatus:
  • A block with a smooth upper horizontal plane and an inclined plane set at approximately 138°.
  • Two plate glass sheets and a ruler or wooden block with a rough underside to grip the fabric sample.
• Sample Preparation:
  • Five specimens cut to twice the maximum bending length as per textile specifications.
  • Cuts made perpendicular to the fabric’s longitudinal direction.
• Test Procedure:
  • Specimen is placed on the block and moved across the edge at a uniform rate until it contacts the inclined plane.
  • Measurement of the fabric length protruding beyond the edge is recorded.
  • Tests are performed on both sides of the fabric specimen.
• Results Expression:
  • Calculate the mean flexibility from five specimens.
  • Record the highest and lowest individual results for quality assessment.

Applications

EN 4504:2013 is primarily applied within aerospace manufacturing and quality control laboratories to:

• Assess the flexibility of narrow fabrics used in aircraft interiors, safety equipment, and aerospace structural components.
• Ensure textile components meet stringent aerospace specifications regarding pliability and behavior under mechanical stress.
• Facilitate material selection by enabling comparison of fabric flexibility properties.
• Support compliance with aerospace industry regulations and standards to enhance safety and durability.
• Provide traceable, repeatable test methods for certification bodies and material suppliers within the aerospace supply chain.

Manufacturers and testing facilities benefit from this standard by achieving consistent evaluation results, improving product reliability and enabling faster approval processes of aerospace textile materials.

Related Standards

• EN 4385: General organization of standardization for aerospace non-metallic materials, providing the framework in which EN 4504 operates.
• EN ISO 139: Standard atmospheres for conditioning and testing textiles, referenced for environmental test conditions compliance.
• Other aerospace textile standards: For comprehensive performance testing including tensile strength, abrasion resistance, and fire retardancy relevant to non-metallic aerospace materials.

Summary

EN 4504:2013 is essential for the aerospace industry, providing a standardized test method for determining the flexibility of narrow fabrics. By following this procedure, aerospace manufacturers and testing laboratories ensure that non-metallic textile materials meet critical quality and performance requirements. This contributes to overall aerospace safety, reliability, and compliance, supporting the development of advanced aerospace components using specialized textiles.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Nichtmetallische Werkstoffe, Textilien - Prüfverfahren
- Bestimmung der Flexibilitat von SchmalgewebenSérie aérospatiale - Matériaux non-métalliques, Textiles - Méthode d'essai -
Détermination de la flexibilité des tissus étroitsAerospace series - Non-metallic materials, Textiles - Test method - Determination of flexibility of narrow fabrics49.025.60TekstilijeTextilesICS:Ta slovenski standard je istoveten z:EN 4504:2013SIST EN 4504:2014en01-februar-2014SIST EN 4504:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4504
August 2013 ICS 49.025.60 English Version
Aerospace series - Non-metallic materials, Textiles - Test method - Determination of flexibility of narrow fabrics
Série aérospatiale - Matériaux non-métalliques, Textiles - Méthode d'essai -
Détermination de la flexibilité des tissus étroits
Luft- und Raumfahrt - Nichtmetallische Werkstoffe, Textilien - Prüfverfahren
- Bestimmung der Flexibilitat von Schmalgeweben This European Standard was approved by CEN on 8 May 2013.
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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4504:2013: ESIST EN 4504:2014
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