Aerospace series - Sampling plan for acceptance testing of aramid, carbon fibre and textile glass filament yarns

This document specifies the sampling plan for acceptance testing of aramid, carbon fibre and textile glass filament yarns in terms of sample size and rejection criteria.
This document serves as a basis for the corresponding technical specification. It covers the inspection by attributes. The inspection by measurements (variables) will be added in subsequent edition. It is also planned to extend its scope of application to reinforcing woven fabrics.

Luft- und Raumfahrt - Stichprobenanweisung für die Abnahmeprüfung von Aramid-, Kohlenstoff- und Textilglasfilamentgarnen

Dieses Dokument legt die Stichprobenanweisung für die Abnahmeprüfung von Aramid-, Kohlenstoff- und Textilglas-Filamentgarnen fest. Hierbei werden der Stichprobenumfang und die Rückweisungskriterien festgelegt.
Dieses Dokument dient als Grundlage für die entsprechenden Technischen Lieferbedingungen. Es behandelt die Attributprüfung. In einer späteren Folgeausgabe dieses Dokuments soll die Variablenprüfung zusätzlich aufgenommen werden. Ebenso ist die Ausweitung auf Verstärkungsgewebe vorgesehen.

Série aérospatiale - Plan d'échantillonnage pour les essais de réception des fils d'aramide, de fibres de carbone et de silionne

Le présent document spécifie le plan d'échantillonnage pour les essais de réception des fils d'aramide, de fibres de carbone et de silionne en termes de taille d'échantillon et de critères de rejet.
Ce document sert de base à la spécification technique correspondante. Il couvre le contrôle par attributs. Le contrôle par mesures (variables) sera ajouté dans l’édition suivante. Il est également prévu d'étendre son champ d'application au renfort des tissus.

Aeronavtika - Načrt vzorčenja za preskušanje sprejemljivosti aramidnih in ogljikovih vlaken ter tekstilne steklene filamentne preje

Ta dokument določa načrt vzorčenja za preskušanje sprejemljivosti aramidnih in ogljikovih vlaken ter tekstilne steklene filamentne preje z vidika velikosti vzorca in meril za zavrnitev.
Ta dokument se uporablja kot osnova za ustrezno tehnično specifikacijo. Obravnava kontrolo po opisnih spremenljivkah. Kontrola z merjenjem (spremenljivk) bo dodana v naslednji izdaji. Načrtovana je tudi razširitev področja uporabe na ojačitvene tkanine.

General Information

Status
Published
Publication Date
20-Dec-2022
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2022
Completion Date
21-Dec-2022

Overview

EN 3675:2022 - titled "Aerospace series - Sampling plan for acceptance testing of aramid, carbon fibre and textile glass filament yarns" (CEN, Dec 2022) defines a standardized sampling plan for acceptance testing of filament yarns used in aerospace applications. The standard specifies sample sizes, acceptance and rejection criteria, and reporting requirements for inspection by attributes. Inspection by variables will be added in a later edition and scope extension to reinforcing woven fabrics is planned.

Key topics and requirements

  • Scope: Acceptance sampling of aramid, carbon fibre and textile glass filament yarns (incoming batches/delivery lots).
  • Standards referenced: ISO 2859-1 (sampling by attributes, AQL indexed schemes) and ISO 3951 (sampling by variables - referenced for future editions).
  • Sampling plans: Provides tabulated sampling plans for reduced and normal inspection (based on ISO 2859-1 Table II‑C). Tables cover delivery batch ranges (from small lots up to 10 000+ spools) and list sample sizes (n) with associated acceptance (c) and rejection (d) numbers for AQL levels, notably AQL 2.5 and AQL 1.5.
  • Inspection categories:
    • Visually detectable nonconformities: Count nonconforming spools in sample n and compare with c/d to accept, reject, or switch inspection severity.
    • Measurable product characteristics: For each characteristic the sample mean (x̄) must meet the material standard; individual spool values are compared against c/d acceptance thresholds.
    • Laminate inspection: For laminate-related characteristics, both the sample mean and every individual measurement must conform to the relevant material standard.
  • Decision rules: Uses ISO 2859-1 decision logic - less than or equal to c = accept; greater than or equal to d = reject; values between c and d trigger switching to normal inspection.
  • Test report: Must reference EN 3675, identify product and batch, list tests/methods/results, state acceptance/rejection, and note any change of inspection severity.

Applications and users

  • Who uses it: Quality engineers, incoming inspection teams, procurement and suppliers in aerospace composites supply chains, composite fabricators, and certification bodies.
  • Practical uses:
    • Incoming acceptance testing of filament yarn deliveries (aramid, carbon fibre, textile glass).
    • Supplier quality agreements and contract acceptance criteria.
    • Routine production quality control and audits.
    • Basis for developing technical specifications and future variable-inspection procedures.

Related standards

  • ISO 2859-1 - Sampling procedures for inspection by attributes (AQL-based schemes)
  • ISO 3951 - Sampling procedures for inspection by variables (all parts; referenced for future work)
  • EN 2962 - Aerospace series carbon fibre filament yarn technical specification

Keywords: EN 3675:2022, sampling plan, acceptance testing, aramid filament yarn, carbon fibre filament yarn, textile glass filament yarns, AQL 2.5, AQL 1.5, ISO 2859-1, aerospace sampling.

Standard
EN 3675:2023
English language
8 pages
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Frequently Asked Questions

EN 3675:2022 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Sampling plan for acceptance testing of aramid, carbon fibre and textile glass filament yarns". This standard covers: This document specifies the sampling plan for acceptance testing of aramid, carbon fibre and textile glass filament yarns in terms of sample size and rejection criteria. This document serves as a basis for the corresponding technical specification. It covers the inspection by attributes. The inspection by measurements (variables) will be added in subsequent edition. It is also planned to extend its scope of application to reinforcing woven fabrics.

This document specifies the sampling plan for acceptance testing of aramid, carbon fibre and textile glass filament yarns in terms of sample size and rejection criteria. This document serves as a basis for the corresponding technical specification. It covers the inspection by attributes. The inspection by measurements (variables) will be added in subsequent edition. It is also planned to extend its scope of application to reinforcing woven fabrics.

EN 3675:2022 is classified under the following ICS (International Classification for Standards) categories: 49.025.60 - Textiles. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase EN 3675:2022 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-marec-2023
Aeronavtika - Načrt vzorčenja za preskušanje sprejemljivosti aramidnih in
ogljikovih vlaken ter tekstilne steklene filamentne preje
Aerospace series - Sampling plan for acceptance testing of aramid, carbon fibre and
textile glass filament yarns
Luft- und Raumfahrt - Prüfplan für die Abnahmeprüfung von Aramid-, Kohlenstoff- und
Textilglasfilamentgarnen
Série aérospatiale - Plan d'échantillonnage pour le contrôle de réception des fils continus
d'aramide, de carbone et de verre textile
Ta slovenski standard je istoveten z: EN 3675:2022
ICS:
49.025.60 Tekstilije Textiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3675
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 49.025.60
English Version
Aerospace series - Sampling plan for acceptance testing of
aramid, carbon fibre and textile glass filament yarns
Série aérospatiale - Plan d'échantillonnage pour le Luft- und Raumfahrt - Prüfplan für die
contrôle de réception des fils continus d'aramide, de Abnahmeprüfung von Aramid-, Kohlenstoff- und
carbone et de verre textile Textilglasfilamentgarnen
This European Standard was approved by CEN on 24 July 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3675:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Acceptance sampling plan . 4
4.1 Sampling . 4
4.2 Evaluation . 6
4.2.1 Inspection of visually detectable nonconformities . 6
4.2.2 Measurable product characteristics . 6
4.3 Laminate inspection . 6
4.4 Test report . 7
Bibliography . 8

European foreword
This document (EN 3675:2022) 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
document has received the approval of the National Associations and the Official Services of the
member countries of ASD-STAN, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2023 and conflicting national standards shall
be withdrawn at the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Türkiye and the United Kingdom.
1 Scope
This document specifies the sampling plan for acceptance testing of aramid, carbon fibre and textile
glass filament yarns in terms of sample size and rejection criteria.
This document serves as a basis for the corresponding technical specification. It covers the inspection
by attributes. The inspection by measurements (variables) will be added in subsequent edition. It is also
planned to extend its scope of application to reinforcing woven fabrics.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
...

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