EN 1007-2:2002

Advanced technical ceramics - Ceramics composites - Methods of test for reinforcement - Part 2: Determination of linear density

This part of EN 1007 specifies a method for the determination of the linear density (mass per unit length) of ceramic fibres, including silicon carbide, silicon nitride, silicon carbon-nitride, alumino-silicate, alumina or silicon oxide fibres. The linear density is determined on unsized ceramic yarn.

Hochleistungskeramik - Keramische Verbunwerkstoffe - Verfahren zur Prüfung der Faserverstärkungen - Teil 2: Bestimmung der Feinheit

Dieser Teil von EN 1007 legt die Bedingungen zur Bestimmung der Feinheit (Masse je Längeneinheit) von keramischen Multifilamentkabeln einschließlich Siliciumcarbid-, Siliciumnitrid-, Silicumcarbonitrid-, Alumo-Silicat-, Aluminiumoxid- und Siliciumdioxidfasern fest.
ANMERKUNG 1   Wenn die Bestimmung der Feinheit an geschlichteten Multifilamentkabeln durchgeführt wird, muss eine Korrektur durch die Berechnung auf der Grundlage des Schlichtegehaltes erfolgen.
ANMERKUNG 2   In dieser Europäischen Norm werden Kohlenstoff-Fasern nicht berücksichtigt. Für Kohlenstoff-Fasern sollte ISO 1889 angewendet werden.

Céramiques techniques avancées - Céramiques composites - Méthodes d'essai pour renforcements - Partie 2: Détermination de la masse linéique

La présente partie de cette Norme européenne spécifie les conditions de détermination de la masse linéique (masse par unité de longueur) des fibres céramiques, dont le carbure de silicium, le nitrure de silicium, le carbonitrure de silicium, le silicate d'alumine, les oxydes d'aluminium ou de silicium.
NOTE 1   Lorsque la détermination de la masse linéique est effectuée sur une éprouvette de fil céramique dimensionné, il convient d'effectuer une correction par calcul en fonction du taux d'ensimage.
NOTE 2   Les fibres de carbone ne sont pas traitées dans la présente Norme européenne. Il convient à cet effet de se référer à l'ISO 1889.

Advanced technical ceramics - Ceramics composites - Methods of test for reinforcement - Part 2: Determination of linear density

General Information

• Status: Published
• Publication Date: 17-Sep-2002
• ICS: 81.060.30 - Advanced ceramics
• Technical Committee: CEN/TC 184 - Advanced technical ceramics
• Drafting Committee: CEN/TC 184/SC 1 - Ceramic composites
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 01-Apr-2025
• Completion Date: 14-Apr-2025
• Mandate: M/BC/CEN/90/4 - Request concerning the realisation of a standardization programme in the field of advanced technical ceramics
• Ref Project: SIST EN 1007-2:2004 - Advanced technical ceramics - Ceramics composites - Methods of test for reinforcement - Part 2: Determination of linear density

Relations

• Replaces: ENV 1007-2:1993 - Advanced technical ceramics - Ceramic composites - Methods of test for reinforcements - Part 2: Determination of linear density
• Effective Date: 22-Dec-2008

Overview

EN 1007-2:2002 is a European standard developed by CEN that defines the method for determining the linear density of advanced technical ceramic reinforcement fibres. This standard applies to ceramic multifilament tows including silicon carbide, silicon nitride, silicon carbonitride, alumino-silicate, alumina, and silicon oxide fibres. Linear density, expressed in tex (grams per 1,000 meters), is a critical parameter reflecting the mass per unit length of ceramic yarn, providing essential information for quality control and material characterization in ceramics manufacturing.

This test method is specifically designed for unsized ceramic yarns, ensuring accuracy in measurements without interference from surface coatings. EN 1007-2:2002 supports industries that rely on ceramic composites by standardizing how reinforcement fibre linear density measurements are conducted, thus enabling better material consistency and comparability across suppliers and applications.

Key Topics

• Scope and Applicability: Applicable to ceramic fibrous materials such as silicon carbide, silicon nitride, alumina, and more; excludes carbon fibres which are covered by ISO 1889.
• Sample Preparation: Detailed protocols for sampling (in accordance with EN ISO 1886), cutting test specimens under precise tension, and drying procedures.
• Testing Conditions: Specifies environmental conditions-23 ± 2°C temperature and 50 ± 5% relative humidity-to ensure reproducibility and comparability.
• Test Apparatus: Includes accurate cutting devices, sensitive balances (0.1 mg accuracy), ovens for drying at 105 ± 5°C, desiccators, and other accessories.
• Measurement Process: Weigh precisely measured lengths of multifilament tow to calculate linear density using a standard formula:
  t (tex) = (mass in grams × 1000) / length in meters
• Reporting: Mandates comprehensive test reports including material description, batch number, specimen details, test conditions, results, and referencing EN 1007-2.

Applications

The determination of linear density in ceramic reinforcement fibres is vital for:

• Ceramic Composite Manufacturing: Ensures composite materials meet design specifications for strength, weight, and performance.
• Quality Control: Allows manufacturers to verify fibre consistency between different batches and suppliers.
• Material Research and Development: Supports development of new ceramic fibre types by providing standardized measurement techniques.
• Supply Chain Communication: Provides a reliable, repeatable basis for communication of fibre properties between producers and end-users.
• Performance Prediction: Accurate linear density data aids in modeling mechanical properties and processing behaviour of ceramic composites.

By adhering to EN 1007-2:2002, manufacturers and laboratories can achieve more reliable material characterization that supports high-performance applications in aerospace, automotive, electronics, and other advanced technical fields utilizing ceramic composites.

Related Standards

• EN 1007 Series:
  • Part 1: Determination of size content of ceramic fibres
  • Part 3: Determination of filament diameter and cross-section area
  • Parts 4 to 6: Methods for tensile property testing under various conditions
• ISO 1889: Standard for determining linear density of reinforcement yarns (used primarily for carbon fibres)
• EN ISO 1886: Sampling plans applicable to batches of reinforcement fibres
• EN ISO 291: Standard atmospheres for conditioning and testing (ensures controlled testing environment)
• ENV 13233:1998: Notations and symbols for ceramic composites

These complementary standards support a comprehensive approach to testing and characterization of technical ceramic fibres, promoting harmonized practices across the industry.

---

Keywords: EN 1007-2, ceramic composites, linear density test, ceramic fibres, silicon carbide fibres, alumina fibres, technical ceramics, multifilament tow, reinforcement fibres, test methods for ceramics, fibre linear density, ceramic yarn specification, CEN standard, advanced technical ceramics.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2004
Advanced technical ceramics - Ceramics composites - Methods of test for
reinforcement - Part 2: Determination of linear density
Advanced technical ceramics - Ceramics composites - Methods of test for reinforcement
- Part 2: Determination of linear density
Hochleistungskeramik - Keramische Verbunwerkstoffe - Verfahren zur Prüfung der
Faserverstärkungen - Teil 2: Bestimmung der Feinheit
Céramiques techniques avancées - Céramiques composites - Méthodes d'essai pour
renforcements - Partie 2: Détermination de la masse linéique
Ta slovenski standard je istoveten z: EN 1007-2:2002
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1007-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2002
ICS 81.060.30 Supersedes ENV 1007-2:1993
English version
Advanced technical ceramics - Ceramics composites - Methods
of test for reinforcement - Part 2: Determination of linear density
Céramiques techniques avancées - Céramiques Hochleistungskeramik - Keramische Verbunwerkstoffe -
composites - Méthodes d'essai pour renforcements - Partie Verfahren zur Prüfung der Faserverstärkungen - Teil 2:
2: Détermination de la masse linéique Bestimmung der Feinheit
This European Standard was approved by CEN on 6 July 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, 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
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1007-2:2002 E
worldwide for CEN national Members.

Contents
page
Foreword.3
1 Scope .4
2 Normative references .4
3 Principle.4
4 Terms, definitions and symbols.4
5 Apparatus and accessories .5
6 Sampling.5
7 Testing atmosphere.5
8 Test specimen preparation .5
9 Test procedure .5
10 Calculation of results .5
11 Test report .6
Bibliography .7
Foreword
This document (EN 1007-2:2002) has been prepared by Technical Committee CEN/TC 184 "Advanced technical
ceramics", the secretariat of which is held by BSI.
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 March 2003, and conflicting national standards shall be withdrawn at the latest by
March 2003.
This document supersedes ENV 1007-2:1993.
EN 1007 has six parts:
EN 1007-1 Part 1: Determination of size content.
EN 1007-2 Part 2: Determination of linear density.
EN 1007-3 Part 3: Determination of filament diameter and cross-section area.
prEN 1007-4 Part 4: Determination of tensile properties of filament at ambient temperature.
p
...