EN ISO 20504:2022

Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at room temperature - Determination of compressive properties (ISO 20504:2022)

This document describes procedures for determination of the compressive behaviour of ceramic matrix composite materials with continuous fibre reinforcement at room temperature. This method applies to all ceramic matrix composites with a continuous fibre reinforcement, uni-directional (1D), bi-directional (2D) and tri-directional (xD, with 2 < x < 3), tested along one principal axis of reinforcement or off axis conditions. This method also applies to carbon-fibre-reinforced carbon matrix composites (also known as carbon/carbon or C/C). Two cases of testing are distinguished: compression between platens and compression using grips.

Hochleistungskeramik - Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei Raumtemperatur - Bestimmung des Druckverhaltens (ISO 20504:2022)

Dieses Dokument beschreibt Verfahren zur Bestimmung des Druckverhaltens von endlosfaserverstärkten Verbundwerkstoffen mit keramischer Matrix bei Raumtemperatur. Diese Verfahren sind anwendbar für alle keramischen Verbundwerkstoffe mit keramischer Matrix, die endlosfaserverstärkt sind, mit unidirektionaler (1D), bidirektionaler (2D) und mehrdirektionaler (xD, mit 2 < x < 3) Endlosfaserverstärkung, die parallel zu einer der Hauptverstärkungsachsen oder außeraxial beansprucht werden. Diese Verfahren sind außerdem anwendbar für kohlenstofffaserverstärkte Verbundwerkstoffe mit Kohlenstoffmatrix (auch als Kohlenstoff/Kohlenstoff oder C/C bezeichnet). Es werden zwei Fälle von Prüfungen unterschieden: Druckbeanspruchung zwischen Platten und Druckbeanspruchung unter Verwendung von Einspanneinrichtungen.

Céramiques techniques - Propriétés mécaniques des composites à matrice céramiques à température ambiante - Méthode de détermination des propriétés en compression (ISO 20504:2022)

Le présent document décrit des procédures permettant de déterminer les caractéristiques en compression des matériaux composites à matrice céramique avec renfort de fibres continues à température ambiante. Il s’applique à tous les composites à matrice céramique avec renfort de fibres continues, unidirectionnel (1D), bidirectionnel (2D) et tridirectionnel (xD, avec 2 < x < 3), sollicités suivant un axe principal de renfort ou dans des conditions hors axe. Il peut également s’appliquer aux composites à matrice de carbone avec renfort de fibres de carbone (également connus en tant que carbone/carbone ou C/C). Deux cas de compression sont distingués: la compression entre plateaux et la compression entre mors.

Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske lastnosti keramičnih kompozitov pri sobni temperaturi - Določanje tlačnih lastnosti (ISO 20504:2022)

Ta dokument opisuje postopke za določanje vedenja keramičnih matričnih kompozitnih materialov z neprekinjeno ojačitvijo vlaken pri stiskanju pri sobni temperaturi. Ta metoda se uporablja za vse keramične matrične kompozite z neprekinjeno ojačitvijo vlaken, enosmerno (1D), dvosmerno (2D) in trismerno (xD, pri čemer je 2 < x ≤ 3), preskušene vzdolž ene glavne osi ojačitve ali v pogojih zunaj osi. Ta metoda se uporablja tudi za karbonske matrične kompozite s karbonskimi vlakni (imenovane tudi karbon/karbon ali C/C). Razlikujemo med dvema primeroma preskušanja: stiskanje med stiskalnimi valji in stiskanje z ročaji.

General Information

• Status: Published
• Publication Date: 13-Dec-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: 14-Dec-2022
• Completion Date: 14-Dec-2022
• Ref Project: SIST EN ISO 20504:2023 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at room temperature - Determination of compressive properties (ISO 20504:2022)

Relations

• Replaces: EN ISO 20504:2019 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at room temperature - Determination of compressive properties (ISO 20504:2019)
• Effective Date: 29-Dec-2021

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2023
Nadomešča:
SIST EN ISO 20504:2019
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske
lastnosti keramičnih kompozitov pri sobni temperaturi - Določanje tlačnih lastnosti
(ISO 20504:2022)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at room temperature - Determination of compressive
properties (ISO 20504:2022)
Hochleistungskeramik - Mechanische Eigenschaften von keramischen
Verbundwerkstoffen bei Raumtemperatur - Bestimmung des Druckverhaltens (ISO
20504:2022)
Céramiques techniques - Propriétés mécaniques des composites à matrice céramiques
à température ambiante - Méthode de détermination des propriétés en compression
(ISO 20504:2022)
Ta slovenski standard je istoveten z: EN ISO 20504:2022
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 20504
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 81.060.30 Supersedes EN ISO 20504:2019
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Mechanical properties of ceramic composites
at room temperature - Determination of compressive
properties (ISO 20504:2022)
Céramiques techniques - Propriétés mécaniques des Hochleistungskeramik - Mechanische Eigenschaften
composites à matrice céramiques à température von keramischen Verbundwerkstoffen bei
ambiante - Méthode de détermination des propriétés Raumtemperatur - Bestimmung des Druckverhaltens
en compression (ISO 20504:2022) (ISO 20504:2022)
This European Standard was approved by CEN on 28 November 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 ISO 20504:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 20504:2022) has been prepared by Technical Committee ISO/TC 206 "Fine
ceramics" in collaboration with 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 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.
This document supersedes EN ISO 20504:2019.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. 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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 20504:2022 has been approved by CEN as EN ISO 20504:2022 without any modification.

INTERNATIONAL ISO
STANDARD 20504
Third edition
2022-12
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Mechanical properties of ceramic
composites at room temperature
— Determination of compressive
properties
Céramiques techniques — Propriétés mécaniques des composites
à matrice céramiques à température ambiante — Méthode de
détermination des propriétés en compression
Reference number
ISO 20504:2022(E)
ISO 20504:2022(E)
© ISO 2022
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]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 20504:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
5.1 Test machine . 3
5.2 Load train . 3
5.3 Strain measurement . 4
5.3.1 General . 4
5.3.2 Strain gauges. 4
5.3.3 Extensometry . 4
5.4 Data recording system . 4
5.5 Dimension-measuring devices . 4
6 Test specimens . 5
6.1 General . 5
6.2 Compression between platens . . 5
6.3 Test specimen used with grips . 7
7 Test specimen preparation .10
7.1 Machining and preparation . 10
7.2 Number of test specimens . 10
8 Test procedure .10
8.1 Test mode and rate . 10
8.2 Measurement of test specimen dimensions . 10
8.3 Buckling . 10
8.4 Testing technique . 11
8.4.1 Test specimen mounting . 11
8.4.2 Extensometers. 11
8.4.3 Measurements . 11
8.5 Test validity . 11
9 Calculation of results .11
9.1 Test specimen origin . 11
9.2 Compressive strength . 12
9.3 Strain at maximum compressive force .12
9.4 Proportionality ratio or pseudo-elastic modulus, elastic modulus .12
10 Test report .13
Annex A (informative) Illustration of elastic modulus .15
Bibliography .17
iii
ISO 20504:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental
...