SIST EN ISO 17142:2016
(Main)Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature in air at atmospheric pressure - Determination of fatigue properties at constant amplitude (ISO 17142:2014)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature in air at atmospheric pressure - Determination of fatigue properties at constant amplitude (ISO 17142:2014)
This International Standard specifies the conditions for the determination of properties at constant-amplitude of load or strain in uniaxial tension/tension or in uniaxial tension/compression cyclic fatigue of ceramic matrix composite materials (CMCs) with fibre reinforcement at room temperature.
This International Standard applies to all ceramic matrix composites with fibre reinforcement, unidirectional (1D), bi-directional (2D), and tri-directional (xD, where 2 < x ≤ 3).
Hochleistungskeramik - Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur in Luft unter Atmosphärendruck - Bestimmung der Ermüdungseigenschaften bei konstanter Amplitude (ISO 17142:2014)
Diese Internationale Norm legt die Bedingungen zur Bestimmung der Dauerschwingeigenschaften bei einer Temperatur bis zu 1 700 °C in Luft bei Atmosphärendruck für faserverstärkte Verbundwerkstoffe mit keramischer Matrix (CMC) fest, wenn eine einachsige Beanspruchung innerhalb des Zugschwell- (Zug/Zug) oder des Wechselbereiches (Zug/Druck) so aufgebracht wird, dass eine Last oder Dehnung mit konstanter Amplitude erreicht wird.
Diese Internationale Norm gilt für alle faserverstärkten Verbundwerkstoffe mit keramischer Matrix mit unidirektionaler (1D), bidirektionaler (2D) und mehrdirektionaler (xD, mit 2 < x ≤ 3) Verstärkung.
Der Zweck dieser Internationalen Norm besteht darin, das Verhalten der CMC zu bestimmen, wenn sie gleichzeitig einer mechanischen Dauerschwingbeanspruchung und einer Oxidation ausgesetzt werden. Die Prüfungen zur Bestimmung der Dauerschwingeigenschaften bei hoher Temperatur in inerter Atmosphäre unterscheiden sich von den Prüfungen in oxidierenden Atmosphären. Im Gegensatz zu einer inerten Atmosphäre häufen sich in einer oxidierenden Atmosphäre die Schädigungen durch die Auswirkung der rein mechanischen Ermüdung und durch chemische Einflüsse durch die Oxidation des Werkstoffes.
Céramiques techniques - Propriétés mécaniques des céramiques composites à haute température sous air à pression atmosphérique - Détermination des propriétés de fatigue à amplitude constante (ISO 17142:2014)
L'ISO 17142:2014 spécifie les conditions de détermination des propriétés de fatigue cyclique à amplitude constante de contrainte ou de déformation en traction/traction ou traction/compression uniaxiale des matériaux composites à matrice céramique (CMC) avec renfort des fibres pour une température jusqu'à 1 700 °C dans l'air à la pression atmosphérique.
La présente Norme internationale s'applique à tous les composites à matrice céramique avec renfort de fibres, unidirectionnel (1D), bidirectionnel (2D) ou tridirectionnel (xD, ou 2 < x 3).
L'ISO 17142:2014 a pour objet de déterminer le comportement des composites à matrice céramique lorsqu'ils sont soumis à la fatigue mécanique dans une ambiance oxydante. Les essais de détermination des propriétés de fatigue à haute température dans des atmosphères inertes sont différents de ceux effectués dans des atmosphères oxydantes. Contrairement à une atmosphère inerte, l'endommagement dans une atmosphère oxydante s'accroît du fait de l'influence de la fatigue mécanique mais aussi des effets chimiques de l'oxydation des matériaux.
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske lastnosti keramičnih kompozitov pri visoki temperaturi v zraku v pogojih atmosferskega tlaka - Določanje lastnosti utrujanja pri konstantni amplitudi (ISO 17142:2014)
Ta mednarodni standard podaja pogoje za določanje lastnosti keramičnih matričnih kompozitnih materialov (CMC) z ojačanimi vlakni pri obremenitvi ali natezanju s konstantno amplitudo pri cikličnem utrujanju z enoosnim natezanjem/natezanjem ali enoosnim natezanjem/stiskanjem pri sobni temperaturi. Ta mednarodni standard se uporablja za vse keramične matrične kompozite z ojačitvijo vlaken, enosmerno (1D), dvosmerno (2D) in trismerno (xD, kjer je 2 < x ≤ 3).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 17142:2016
01-junij-2016
1DGRPHãþD
SIST EN 15157:2007
)LQDNHUDPLND VRGREQDNHUDPLNDVRGREQDWHKQLþQDNHUDPLND 0HKDQVNH
ODVWQRVWLNHUDPLþQLKNRPSR]LWRYSULYLVRNLWHPSHUDWXULY]UDNXYSRJRMLK
DWPRVIHUVNHJDWODND'RORþDQMHODVWQRVWLXWUXMDQMDSULNRQVWDQWQLDPSOLWXGL ,62
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at high temperature in air at atmospheric pressure -
Determination of fatigue properties at constant amplitude (ISO 17142:2014)
Hochleistungskeramik - Mechanische Eigenschaften von keramischen
Verbundwerkstoffen bei hoher Temperatur in Luft unter Atmosphärendruck -
Bestimmung der Ermüdungseigenschaften bei konstanter Amplitude (ISO 17142:2014)
Céramiques techniques - Propriétés mécaniques des céramiques composites à haute
température sous air à pression atmosphérique - Détermination des propriétés de fatigue
à amplitude constante (ISO 17142:2014)
Ta slovenski standard je istoveten z: EN ISO 17142:2016
ICS:
81.060.30 Sodobna keramika Advanced ceramics
SIST EN ISO 17142:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 17142:2016
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SIST EN ISO 17142:2016
EN ISO 17142
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2016
EUROPÄISCHE NORM
ICS 81.060.30 Supersedes EN 15157:2006
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Mechanical properties of ceramic composites
at high temperature in air at atmospheric pressure -
Determination of fatigue properties at constant amplitude
(ISO 17142:2014)
Céramiques techniques - Propriétés mécaniques des Hochleistungskeramik - Mechanische Eigenschaften
céramiques composites à haute température sous air à von keramischen Verbundwerkstoffen bei hoher
pression atmosphérique - Détermination des Temperatur in Luft unter Atmosphärendruck -
propriétés de fatigue à amplitude constante (ISO Bestimmung der Ermüdungseigenschaften bei
17142:2014) konstanter Amplitude (ISO 17142:2014)
This European Standard was approved by CEN on 25 March 2016.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17142:2016 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 17142:2016
EN ISO 17142:2016 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 17142:2016
EN ISO 17142:2016 (E)
European foreword
The text of ISO 17142:2014 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 17142:2016
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 October 2016, and conflicting national standards shall
be withdrawn at the latest by October 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 15157:2006.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 17142:2014 has been approved by CEN as EN ISO 17142:2016 without any modification.
3
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SIST EN ISO 17142:2016
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SIST EN ISO 17142:2016
INTERNATIONAL ISO
STANDARD 17142
First edition
2014-06-01
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Mechanical properties of ceramic
composites at high temperature
in air at atmospheric pressure —
Determination of fatigue properties at
constant amplitude
Céramiques techniques — Propriétés mécaniques des composites
céramiques à haute température sous air à pression atmosphérique
— Détermination des propriétés de fatigue à amplitude constante
Reference number
ISO 17142:2014(E)
©
ISO 2014
---------------------- Page: 7 ----------------------
SIST EN ISO 17142:2016
ISO 17142:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 17142:2016
ISO 17142:2014(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General . 2
3.2 Cyclic fatigue phenomena . 3
4 Principle . 5
5 Significance and use . 5
6 Apparatus . 6
6.1 Fatigue test machine . 6
6.2 Load train. 6
6.3 Set-up for heating . 7
6.4 Extensometer . 7
6.5 Temperature measurement . 7
6.6 Data recording system . 7
6.7 Micrometers . 7
7 Test specimens. 7
8 Test specimen preparation . 8
8.1 Machining and preparation . 8
8.2 Number of test specimens . 9
9 Test procedure . 9
9.1 Test set-up: temperature considerations . 9
9.2 Measurement of test specimen dimensions . 9
9.3 Testing technique .10
9.4 Test validity .11
10 Calculation of results .11
10.1 Time to failure, t .
f 11
10.2 Damage parameters.11
10.3 Residual properties .12
11 Test report .13
Annex A (informative) Schematic evolution of E .15
© ISO 2014 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 17142:2016
ISO 17142:2014(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 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 206, Fine ceramics.
iv © ISO 2014 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 17142:2016
INTERNATIONAL STANDARD ISO 17142:2014(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Mechanical properties of ceramic composites
at high temperature in air at atmospheric pressure —
Determination of fatigue properties at constant amplitude
1 Scope
This International Standard specifies the conditions for the determination of properties at constant-
amplitude of load or strain in uniaxial tension/tension or in uniaxial tension/compression cyclic fatigue
of ceramic matrix composite materials (CMCs) with fibre reinforcement for temperature up to 1 700 °C
in air at atmospheric pressure.
This International Standard applies to all ceramic matrix composites with fibre reinforcement,
unidirectional (1D), bi-directional (2D), and tri-directional (xD, where 2 < x ≤ 3).
The purpose of this International Standard is to determine the behaviour of CMC when subjected to
mechanical fatigue and oxidation simultaneously. Tests for the determination of fatigue properties at
high temperature in inert atmospheres differ from those in oxidative atmospheres. Contrary to an inert
atmosphere, damage in an oxidative atmosphere accumulates due to the influence of purely mechanical
fatigue and to chemical effects of the material’s oxidation.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/compression
testing machines — Verification and calibration of the force-measuring system
ISO 9513, Metallic materials — Calibration of extensometer systems used in uniaxial testing
ISO 4574, Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of
ceramic composites at high temperature — Determination of compression properties
ISO 14574, Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of
ceramic composites at high temperature — Determination of tensile properties
ISO 15733, Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties
of ceramic composites at ambient temperature in air atmospheric pressure — Determination of tensile
properties
IEC 60584-1, Thermocouples — Part 1: EMF specifications and tolerances
IEC 60584-2, Thermocouples — Part 2: Tolerances
CEN/TR 13233, Advanced technical ceramics — Notations and symbols
© ISO 2014 – All rights reserved 1
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SIST EN ISO 17142:2016
ISO 17142:2014(E)
3 Terms and definitions
1)
For the purposes of this document, the terms and definitions given in CEN/TR 13233 and the following
apply.
3.1 General
3.1.1
test temperature
T
temperature of the test specimen at the centre of the gauge length
3.1.2
calibrated length
l
part of the test specimen which has uniform and minimum cross-section area
3.1.3
gauge length
L
o
initial distance between reference points on the test specimen in the calibrated length
3.1.4
controlled temperature zone
part of the calibrated length including the gauge length where the temperature is within 50 °C of the test
temperature
3.1.5
initial cross-section area
S
o
initial cross-section area of the test specimen within the calibrated length, at the test temperature
Note 1 to entry: Two initial cross-section areas of the test specimen can be defined:
— apparent cross-section area: this is the total area of the cross-section, S ;
o app
— effective cross-section area: this is the total area corrected by a factor to account for the presence of a coating,
S .
o eff
3.1.6
longitudinal deformation
A
change in the gauge length between reference points under an uniaxial force
3.1.7
strain
ε
relative change in the gauge length defined as the ratio, A/L
o
3.1.8
stress
σ
force supported by the test specimen at any time in the test, divided by the initial cross-section area
Note 1 to entry: Two stresses can be distinguished:
— apparent stress, σ , when the apparent cross-section area (o
...
SLOVENSKI STANDARD
kSIST FprEN ISO 17142:2015
01-november-2015
)LQDNHUDPLND VRGREQDNHUDPLNDVRGREQDWHKQLþQDNHUDPLND 0HKDQVNH
ODVWQRVWLNHUDPLþQLKNRPSR]LWRYSULYLVRNLWHPSHUDWXULY]UDNXYSRJRMLK
DWPRVIHUVNHJDWODND'RORþDQMHODVWQRVWLXWUXMDQMDSULNRQVWDQWQLDPSOLWXGL ,62
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at high temperature in air at atmospheric pressure -
Determination of fatigue properties at constant amplitude (ISO 17142:2014)
Hochleistungskeramik - Mechanische Eigenschaften von keramischen
Verbundwerkstoffen bei hoher Temperatur in Luft unter Atmosphärendruck -
Bestimmung der Ermüdungseigenschaften bei konstanter Amplitude (ISO 17142:2014)
Céramiques techniques - Propriétés mécaniques des céramiques composites à haute
température sous air à pression atmosphérique - Détermination des propriétés de fatigue
à amplitude constante (ISO 17142:2014)
Ta slovenski standard je istoveten z: FprEN ISO 17142
ICS:
81.060.30 Sodobna keramika Advanced ceramics
kSIST FprEN ISO 17142:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
kSIST FprEN ISO 17142:2015
---------------------- Page: 2 ----------------------
kSIST FprEN ISO 17142:2015
FINAL DRAFT
EUROPEAN STANDARD
FprEN ISO 17142
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2015
ICS 81.060.30 Will supersede EN 15157:2006
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Mechanical properties of ceramic composites
at high temperature in air at atmospheric pressure -
Determination of fatigue properties at constant amplitude
(ISO 17142:2014)
Céramiques techniques - Propriétés mécaniques des Hochleistungskeramik - Mechanische Eigenschaften
céramiques composites à haute température sous air à von keramischen Verbundwerkstoffen bei hoher
pression atmosphérique - Détermination des Temperatur in Luft unter Atmosphärendruck -
propriétés de fatigue à amplitude constante (ISO Bestimmung der Ermüdungseigenschaften bei
17142:2014) konstanter Amplitude (ISO 17142:2014)
This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the
Technical Committee CEN/TC 184.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprEN ISO 17142:2015 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
kSIST FprEN ISO 17142:2015
FprEN ISO 17142:2015 (E)
Contents
Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
kSIST FprEN ISO 17142:2015
FprEN ISO 17142:2015 (E)
European foreword
The text of ISO 17142:2014 has been prepared by Technical Committee ISO/TC 206 “Fine ceramics” of
the International Organization for Standardization (ISO) and has been taken over as
FprEN ISO 17142:2015 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the
secretariat of which is held by DIN.
This document is currently submitted to the Unique Acceptance Procedure.
This document will supersede EN 15157:2006.
Endorsement notice
The text of ISO 17142:2014 has been approved by CEN as FprEN ISO 17142:2015 without any
modification.
3
---------------------- Page: 5 ----------------------
kSIST FprEN ISO 17142:2015
---------------------- Page: 6 ----------------------
kSIST FprEN ISO 17142:2015
INTERNATIONAL ISO
STANDARD 17142
First edition
2014-06-01
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Mechanical properties of ceramic
composites at high temperature
in air at atmospheric pressure —
Determination of fatigue properties at
constant amplitude
Céramiques techniques — Propriétés mécaniques des composites
céramiques à haute température sous air à pression atmosphérique
— Détermination des propriétés de fatigue à amplitude constante
Reference number
ISO 17142:2014(E)
©
ISO 2014
---------------------- Page: 7 ----------------------
kSIST FprEN ISO 17142:2015
ISO 17142:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
---------------------- Page: 8 ----------------------
kSIST FprEN ISO 17142:2015
ISO 17142:2014(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General . 2
3.2 Cyclic fatigue phenomena . 3
4 Principle . 5
5 Significance and use . 5
6 Apparatus . 6
6.1 Fatigue test machine . 6
6.2 Load train. 6
6.3 Set-up for heating . 7
6.4 Extensometer . 7
6.5 Temperature measurement . 7
6.6 Data recording system . 7
6.7 Micrometers . 7
7 Test specimens. 7
8 Test specimen preparation . 8
8.1 Machining and preparation . 8
8.2 Number of test specimens . 9
9 Test procedure . 9
9.1 Test set-up: temperature considerations . 9
9.2 Measurement of test specimen dimensions . 9
9.3 Testing technique .10
9.4 Test validity .11
10 Calculation of results .11
10.1 Time to failure, t .
f 11
10.2 Damage parameters.11
10.3 Residual properties .12
11 Test report .13
Annex A (informative) Schematic evolution of E .15
© ISO 2014 – All rights reserved iii
---------------------- Page: 9 ----------------------
kSIST FprEN ISO 17142:2015
ISO 17142:2014(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 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 206, Fine ceramics.
iv © ISO 2014 – All rights reserved
---------------------- Page: 10 ----------------------
kSIST FprEN ISO 17142:2015
INTERNATIONAL STANDARD ISO 17142:2014(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Mechanical properties of ceramic composites
at high temperature in air at atmospheric pressure —
Determination of fatigue properties at constant amplitude
1 Scope
This International Standard specifies the conditions for the determination of properties at constant-
amplitude of load or strain in uniaxial tension/tension or in uniaxial tension/compression cyclic fatigue
of ceramic matrix composite materials (CMCs) with fibre reinforcement for temperature up to 1 700 °C
in air at atmospheric pressure.
This International Standard applies to all ceramic matrix composites with fibre reinforcement,
unidirectional (1D), bi-directional (2D), and tri-directional (xD, where 2 < x ≤ 3).
The purpose of this International Standard is to determine the behaviour of CMC when subjected to
mechanical fatigue and oxidation simultaneously. Tests for the determination of fatigue properties at
high temperature in inert atmospheres differ from those in oxidative atmospheres. Contrary to an inert
atmosphere, damage in an oxidative atmosphere accumulates due to the influence of purely mechanical
fatigue and to chemical effects of the material’s oxidation.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/compression
testing machines — Verification and calibration of the force-measuring system
ISO 9513, Metallic materials — Calibration of extensometer systems used in uniaxial testing
ISO 4574, Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of
ceramic composites at high temperature — Determination of compression properties
ISO 14574, Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of
ceramic composites at high temperature — Determination of tensile properties
ISO 15733, Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties
of ceramic composites at ambient temperature in air atmospheric pressure — Determination of tensile
properties
IEC 60584-1, Thermocouples — Part 1: EMF specifications and tolerances
IEC 60584-2, Thermocouples — Part 2: Tolerances
CEN/TR 13233, Advanced technical ceramics — Notations and symbols
© ISO 2014 – All rights reserved 1
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kSIST FprEN ISO 17142:2015
ISO 17142:2014(E)
3 Terms a nd definiti ons
1)
For the purposes of this document, the terms and definitions given in CEN/TR 13233 and the following
apply.
3.1 General
3.1.1
test temperature
T
temperature of the test specimen at the centre of the gauge length
3.1.2
calibrated length
l
part of the test specimen which has uniform and minimum cross-section area
3.1.3
gauge length
L
o
initial distance between reference points on the test specimen in the calibrated length
3.1.4
controlled temperature zone
part of the calibrated length including the gauge length where the temperature is within 50 °C of the test
temperature
3.1.5
initial cross-section area
S
o
initial cross-section area of the test specimen within the calibrated length, at the test temperature
Note 1 to entry: Two initial cross-section areas of the test specimen can be defined:
— apparent cross-section area: this is the total area of the cross-section, S ;
o app
— effective cross-section area: this is the total area corrected by a factor to account for the presence of a coating,
S .
o eff
3.1.6
longitudinal deformation
A
change in the gauge length between reference points under an uniaxial force
3.1.7
strain
ε
relative change in the gauge length defined as the ratio, A/L
o
3.1.8
stress
σ
force supported by the test specimen at any time in the test, divided by the initial cross-section area
Note 1 to entry: Two stresses can be distinguished:
— apparent stress, σ , when the apparent cross-section area (or total cross-section area) is used;
app
— effective stress, σ , when the effective cross-section area is used.
eff
1) Intended to be substituted by a future International Standard.
2 © ISO 2014 – All rights reserved
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