FprEN ISO 14574

Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of tensile properties (ISO/FDIS 14574:2024)

This document describes procedures for determination of the tensile behaviour of ceramic matrix composite materials with continuous fibre reinforcement at elevated temperature in air, vacuum and inert gas atmospheres.
This method applies to all ceramic matrix composites with a continuous fibre reinforcement, uni-directional (1D), bidirectional (2D) and multi-directional (xD, with x > 2), tested along one principal axis of reinforcement or off axis conditions for 2D and xD materials.
This method also applies to carbon-fibre-reinforced carbon matrix composites (also known as carbon/carbon or C/C).
NOTE  In most cases, ceramic matrix composites to be used at high temperature in air are coated with an anti-oxidation coating.

Hochleistungskeramik - Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur - Bestimmung der Eigenschaften unter Zug (ISO/FDIS 14574:2024)

Dieses Dokument legt Verfahren zur Bestimmung der Eigenschaften von endlosfaserverstärkten Verbundwerkstoffen mit keramischer Matrix unter Zugbeanspruchung bei erhöhter Lufttemperatur, im Vakuum und in Inertgasatmosphären fest.
Dieses Verfahren gilt für alle endlosfaserverstärkten Verbundwerkstoffe mit keramischer Matrix mit unidirektionaler (1D), bidirektionaler (2D) und mehrdirektionaler (xD, with x> 2) Verstärkung mit der Beanspruchung längs zu einer der Hauptverstärkungsachsen oder bei 2D- oder xD-Werkstoffen mit außeraxialer Beanspruchung. Dieses Verfahren gilt auch für kohlenstofffaserverstärkte Verbundwerkstoffe mit Kohlenstoffmatrix (auch als Kohlenstoff/Kohlenstoff oder C/C bezeichnet).
ANMERKUNG   In den meisten Fällen sind die bei hoher Temperatur in Luft einzusetzenden Verbundwerkstoffe mit keramischer Matrix mit einer Deckschicht gegen Oxidation geschützt.

Céramiques techniques - Propriétés mécaniques des composites à matrice céramique à haute température - Détermination des caractéristiques en traction (ISO/FDIS 14574:2024)

L'ISO 14574:2013 fixe les conditions de détermination des propriétés en traction des matériaux composites à matrice céramique et à renfort continu pour des températures allant jusqu'à 2 000 °C.
L'ISO 14574:2013 s'applique à tous les composites à matrice céramique à renfort continu, unidirectionnel (1D), bidirectionnel (2D), et tridirectionnel (xD, avec 2 < x ≤ 3) sollicités suivant un axe principal de renfort.

Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske lastnosti keramičnih kompozitov pri visoki temperaturi - Ugotavljanje nateznih lastnosti (ISO/FDIS 14574:2024)

General Information

• Status: Not Published
• Publication Date: 16-Mar-2025
• 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: 5060 - Closure of Vote - Formal Approval
• Start Date: 17-Dec-2024
• Completion Date: 17-Dec-2024
• Ref Project: kSIST FprEN ISO 14574:2024 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of tensile properties (ISO/FDIS 14574:2024)

Relations

• Revises: EN ISO 14574:2016 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of tensile properties (ISO 14574:2013)
• Effective Date: 19-Jan-2022

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 14574:2024
01-marec-2024
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske
lastnosti keramičnih kompozitov pri visoki temperaturi - Ugotavljanje nateznih
lastnosti (ISO/DIS 14574:2024)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at high temperature - Determination of tensile
properties (ISO/DIS 14574:2024)
Hochleistungskeramik - Mechanische Eigenschaften von keramischen
Verbundwerkstoffen bei hoher Temperatur - Bestimmung der Eigenschaften unter Zug
(ISO/DIS 14574:2024)
Céramiques techniques - Propriétés mécaniques des céramiques composites à haute
température - Détermination des caractéristiques en traction (ISO/DIS 14574:2024)
Ta slovenski standard je istoveten z: prEN ISO 14574
ICS:
81.060.30 Sodobna keramika Advanced ceramics
oSIST prEN ISO 14574:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 14574:2024
oSIST prEN ISO 14574:2024
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14574
ISO/TC 206 Secretariat: JISC
Voting begins on: Voting terminates on:
2024-01-26 2024-04-19
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Mechanical properties of ceramic composites
at high temperature — Determination of tensile properties
ICS: 81.060.30
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
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STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 14574:2024(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2024

oSIST prEN ISO 14574:2024
ISO/DIS 14574:2024(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14574
ISO/TC 206 Secretariat: JISC
Voting begins on: Voting terminates on:

Fine ceramics (advanced ceramics, advanced technical
ceramics) — Mechanical properties of ceramic composites
at high temperature — Determination of tensile properties
ICS: 81.060.30
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2024
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
or ISO’s member body in the country of the requester. BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
ISO copyright office
USER PURPOSES, DRAFT INTERNATIONAL
CP 401 • Ch. de Blandonnet 8
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
CH-1214 Vernier, Geneva
POTENTIAL TO BECOME STANDARDS TO
Phone: [phone]
WHICH REFERENCE MAY BE MADE IN
Reference number
Email: [e-mail]
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 14574:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 14574:2024
ISO/DIS 14574:2023(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 4
5 Apparatus . 4
5.1 Test machine . 4
5.2 Load train . 4
5.3 Test chamber . 4
5.4 Set-up for heating . 5
5.5 Strain measurement . 5
5.5.1 General . 5
5.5.2 Strain gauges. 5
5.5.3 Extensometer . 5
5.6 Temperature measurement devices . 6
5.7 Data recording system . 6
5.8 Dimension-measuring devices . 6
6 Test specimens . 6
6.1 General . 6
6.2 Test specimens commonly used . 7
7 Test specimen preparation .11
7.1 Machining and preparation . 11
7.2 Number of tests of specimens . 12
8 Test procedures .12
8.1 Test set-up: Temperature considerations .12
8.1.1 General .12
8.1.2 Controlled temperature zone .12
8.1.3 Temperature calibration .12
8.2 Test set-up: Other considerations .12
8.2.1 Displacement rate .12
8.2.2 Measurement of test specimens dimensions .13
8.3 Testing technique . 13
8.3.1 Specimen mounting . 13
8.3.2 Setting of extensometer . 13
8.3.3 Setting of inert atmosphere . 13
8.3.4 Heating of test specimen . 13
8.3.5 Measurements . 14
8.4 Test validity . 14
9 Calculation of results .14
9.1 Test specimen origin . 14
9.2 Tensile strength . 15
9.3 Strain at maximum tensile force . 15
9.4 Tensile modulus .15
9.4.1 Calculation of tensile modulus . 15
9.4.2 Calculation of elastic modulus with linear behaviour at the origin . 16
9.4.3 Stress for materials with no linear section of the stress-strain curve . 16
10 Test report .16
11 Uncertainties .17
Annex A (informative) Illustration of tensile modulus .18
iii
oSIST prEN ISO 14574:2024
ISO/DIS 14574:2023(E)
Annex B (informative) Calibration method of test temperature by using a cartographic
specimen equipped with thermocouples .21
Bibliography .26
iv
oSIST prEN ISO 14574:2024
ISO/DIS 14574:2023(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, in liaison with ISO, also take part in the work.
ISO col
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