EN ISO 20323:2021

Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at ambient temperature in air atmospheric pressure - Determination of tensile properties of tubes (ISO 20323:2018)

ISO 20323:2018 specifies the conditions for the determination of tensile properties of ceramic matrix composite tubes with continuous fibre-reinforcement at ambient temperature in air atmospheric pressure. This document is specific to the tubular geometries since fibre architecture and specimen geometry factors are distinctly different in composite tubes than in flat specimens.
ISO 20323:2018 provides information on the uniaxial tensile properties and tensile stress-strain response such as tensile strength and strain, tensile elastic modulus and Poisson's ratio. The information may be used for material development, control of manufacturing (quality insurance), material comparison, characterization, reliability and design data generation for tubular components.
ISO 20323:2018 addresses, but is not restricted to, various suggested test piece fabrication methods. It applies primarily to ceramic and/or glass matrix composite tubes with a continuous fibrous-reinforcement: unidirectional (1D filament winding and tape lay-up), bi-directional (2D braid and weave) and tri-directional (xD, with 2 < x < 3), loaded along the tube axis.
Values expressed in this document are in accordance with the International System of Units (SI).
NOTE       In most cases, ceramic matrix composites to be used at high temperature in air are coated with an antioxidation coating.

Hochleistungskeramik - Mechanische Eigenschaften keramischer Verbundwerkstoffe bei Umgebungstemperatur unter atmosphärischen Luftdruck - Bestimmung der Zugeigenschaften von Röhren (ISO 20323:2018)

Dieses Dokument legt die Bedingungen für die Bestimmung der Zugeigenschaften von Röhren aus Keramik-Matrix-Verbundwerkstoffen (CMC, en: ceramic matrix composite) mit Endlosfaserverstärkung bei Umgebungstemperatur in Luft-Atmosphärendruck fest. Dieses Dokument ist spezifisch für die röhrenförmigen Geometrien, da Faserarchitektur und Geometriefaktoren der Proben bei Röhren aus Verbundwerkstoffen deutlich anders sind als bei Flachproben.
Dieses Dokument liefert Informationen über die uniaxialen Zugeigenschaften und das Zugspannungs-Dehnungs-Verhalten wie Zugfestigkeit und Dehnung, Zug-Elastizitätsmodul und Poissonzahl. Die Informationen dürfen für die Werkstoffentwicklung, die Kontrolle der Fertigung (Qualitätssicherung), den Werkstoffvergleich, die Charakterisierung, die Zuverlässigkeit und die Generierung von Konstruktionsdaten für röhrenförmige Komponenten verwendet werden.
Dieses Dokument befasst sich mit verschiedenen vorgeschlagenen Verfahren zur Herstellung von Probekörpern, ist aber nicht darauf beschränkt. Es gilt in erster Linie für Röhren aus Keramik- und/oder Glas-Matrix-Verbundwerkstoffen mit einer Endlosfaserverstärkung: unidirektional (1D-Filamentwicklung und Tape Lay-up), bidirektional (2D-Geflecht und Weben) und tridirektional (xD, mit 2 < x < 3), belastet entlang der Röhrenachse.
Die in diesem Dokument angegebenen Werte entsprechen dem Internationalen Einheitensystem (SI).
ANMERKUNG   In den meisten Fällen sind Keramik-Matrix-Verbundwerkstoffe, die bei hohen Temperaturen an Luft eingesetzt werden, mit einer Antioxidationsschicht versehen.

Céramiques techniques - Propriétés mécaniques des composites céramiques à température ambiante et à pression atmosphérique - Détermination des propriétés en traction de tubes (ISO 20323:2018)

L'ISO 20323:2018 spécifie les conditions de détermination des propriétés en traction de tubes composites à matrice céramique avec renfort de fibres continues à température ambiante et à pression atmosphérique. Il s'applique exclusivement aux composites à matrice céramique tubulaire dont la géométrie est étroitement liée à la nature de l'architecture fibreuse.
L'ISO 20323:2018 donne des informations sur le comportement en traction uniaxiale et sur les propriétés associées comme la résistance et la déformation en traction, le module d'élasticité en traction et le coefficient de Poisson. Les informations peuvent être utilisées pour le développement de matériaux, le contrôle de fabrication (assurance qualité), la comparaison de matériaux, la caractérisation ou encore pour la production de données fiables pour le dimensionnement et la conception de composants tubulaires.
L'ISO 20323:2018 traite, sans s'y limiter, de pièces pouvant être élaborées par différentes voies. Il s'applique principalement aux tubes composites à matrice céramique et/ou en verre avec renfort de fibres continues: unidirectionnel (enroulement filamentaire et disposition en bande 1D), bidirectionnel (tressage et tissage2D), et tridirectionnel (xD, avec 2 < x < 3) sollicités suivant l'axe du tube.
Les valeurs figurant dans le présent document sont exprimées selon le système international d'unités (SI).
NOTE       Dans la plupart des cas, les composites à matrice céramique destinés à un usage à haute température sous air sont protégés par un revêtement anti-oxydation.

Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske lastnosti keramičnih kompozitov pri temperaturi okolice in pri zračnem tlaku - Ugotavljanje nateznih lastnosti cevi (ISO 20323:2018)

General Information

• Status: Published
• Publication Date: 20-Jul-2021
• Withdrawal Date: 30-Jan-2022
• 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: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 21-Jul-2021
• Due Date: 18-May-2023
• Completion Date: 21-Jul-2021
• Ref Project: SIST EN ISO 20323:2021 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at ambient temperature in air atmospheric pressure - Determination of tensile properties of tubes (ISO 20323:2018)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2021
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske
lastnosti keramičnih kompozitov pri temperaturi okolice in pri zračnem tlaku -
Ugotavljanje nateznih lastnosti cevi (ISO 20323:2018)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at ambient temperature in air atmospheric pressure -
Determination of tensile properties of tubes (ISO 20323:2018)
Hochleistungskeramik - Mechanische Eigenschaften keramischer Verbundwerkstoffe bei
Umgebungstemperatur unter atmosphärischen Luftdruck - Bestimmung der
Zugeigenschaften von Röhren (ISO 20323:2018)
Céramiques techniques - Propriétés mécaniques des composites céramiques à
température ambiante et à pression atmosphérique - Détermination des propriétés en
traction de tubes (ISO 20323:2018)
Ta slovenski standard je istoveten z: EN ISO 20323:2021
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 20323
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 81.060.30
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Mechanical properties of ceramic composites
at ambient temperature in air atmospheric pressure -
Determination of tensile properties of tubes (ISO
20323:2018)
Céramiques techniques - Propriétés mécaniques des Hochleistungskeramik - Mechanische Eigenschaften
composites céramiques à température ambiante et à keramischer Verbundwerkstoffe bei
pression atmosphérique - Détermination des Umgebungstemperatur unter atmosphärischen
propriétés en traction de tubes (ISO 20323:2018) Luftdruck - Bestimmung der Zugeigenschaften von
Röhren (ISO 20323:2018)
This European Standard was approved by CEN on 11 July 2021.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20323:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 20323:2018 has been prepared by Technical Committee ISO/TC 206 "Fine ceramics” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 20323:2021
by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by
DIN.
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 January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
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 organizations 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 20323:2018 has been approved by CEN as EN ISO 20323:2021 without any modification.

INTERNATIONAL ISO
STANDARD 20323
First edition
2018-03
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Mechanical properties of ceramic
composites at ambient temperature
in air atmospheric pressure —
Determination of tensile properties
of tubes
Céramiques techniques — Propriétés mécaniques des composites
céramiques à température ambiante et à pression atmosphérique —
Détermination des propriétés en traction de tubes
Reference number
ISO 20323:2018(E)
©
ISO 2018
ISO 20323:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 20323:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 4
5 Apparatus . 4
6 Tubular test specimens . 8
6.1 Specimen specifications . 8
6.1.1 General. 8
6.1.2 Dimension . 8
6.1.3 Geometry . 8
6.1.4 Tolerances and variability . . 9
6.2 Specimen preparation . 9
6.2.1 General. 9
6.2.2 As-fabricated .10
6.2.3 Application-matched machining .10
6.2.4 Customary practices .10
6.2.5 Standard procedure.10
6.3 End collars .10
6.4 Test count and test specimens sampling .12
7 Test procedure .12
7.1 General .12
7.2 Test mode and rates .12
7.3 Testing technique .13
7.3.1 Measurement of test specimen dimensions .13
7.3.2 Instrumentation of test specimen .13
7.3.3 Test specimen mounting .13
7.3.4 Setting-up of strain measurement means .13
7.3.5 Measurements .14
7.3.6 Post-test analyses .15
7.4 Test validity .15
8 Calculation of results .15
8.1 Test specimen origin .15
8.2 Engineering stress and strain.16
8.3 Tensile strength .17
8.4 Strain at maximum tensile force .17
8.5 Proportionality ratio or pseudo-elastic modulus, elastic modulus .18
8.5.1 Stress-strain curves with a linear region .18
8.5.2 Nonlinear stress-strain curves .19
8.6 Poisson’s ratio (optional) .19
8.7 Statistics .19
9 Test report .
...