EN ISO 18610:2021

Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at ambient temperature in air atmospheric pressure - Determination of elastic properties by ultrasonic technique (ISO 18610:2016)

ISO 18610:2016 specifies an ultrasonic method to determine the components of the elasticity tensor of ceramic matrix composite materials at room temperature. Young's moduli shear moduli and Poisson coefficients, can be determined from the components of the elasticity tensor.
It applies to ceramic matrix composites with a continuous fibre reinforcement: unidirectional (1D), bidirectional (2D), and tridirectional (×D, with 2 < × ≤ 3) which have at least orthotropic symmetry, and whose material symmetry axes are known.
This method is applicable only when the ultrasonic wavelength used is larger than the thickness of the representative elementary volume, thus imposing an upper limit to the frequency range of the transducers used.

Hochleistungskeramik - Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei Raumtemperatur und atmosphärischem Luftdruck - Bestimmung der elastischen Eigenschaften durch Ultraschalltechnik (ISO 18610:2016)

Dieses Dokument legt ein Ultraschallverfahren fest, mit dem die Komponenten des Elastizitätstensors von keramischen Matrixverbunden bei Raumtemperatur zu bestimmen sind. Aus den Komponenten des Elastizitätstensors können E-Modul, Schermodul und Querkontraktionszahl bestimmt werden.
Dieses Dokument gilt für keramische Matrixverbunde mit unidirektionaler (1D), bidirektionaler (2D) sowie dreidirektionaler (×D, mit 2 < × ≤ 3) Endlosfaserverstärkung, die mindestens eine orthotrope Symmetrie haben und deren Werkstoff-Symmetrieachsen bekannt sind.
Dieses Verfahren ist nur anwendbar, wenn Ultraschall angewendet wird, dessen Wellenlänge größer ist als die Dicke des repräsentativen Volumenelements, wodurch eine obere Grenze für den Frequenzbereich der verwendeten Prüfköpfe festgelegt wird.
ANMERKUNG Die nach diesem Verfahren ermittelten Eigenschaften sind möglicherweise nicht mit den Modulen vergleichbar, die nach ISO 15733, ISO 20504 und EN 12289 ermittelt wurden.

Céramiques techniques (céramiques avancées, céramiques techniques avancées) - Propriétés mécaniques des céramiques composites à température ambiante sous air à pression atmosphérique - Détermination des propriétés élastiques par méthode ultrasonore (ISO 18610:2016)

L'ISO 18610:2016 spécifie une méthode ultrasonore pour déterminer les composantes du tenseur d'élasticité des composites à matrice céramique à température ambiante. Les modules de Young, les modules de cisaillement et les coefficients de Poisson peuvent être déterminés à partir des composantes du tenseur d'élasticité.
L'ISO 18610:2016 s'applique aux composites à matrice céramique à renfort fibreux continu unidirectionnels (1D), bidirectionnels (2D) et tridirectionnels (× D, avec 2 < × ≤ 3), qui ont au minimum une symétrie orthotrope et dont les axes de symétrie sont connus.
Cette méthode est uniquement applicable lorsque la longueur d'onde ultrasonore utilisée est supérieure à l'épaisseur du volume élémentaire représentatif, ce qui impose une limite supérieure à la gamme de fréquences des traducteurs utilisés.

Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske lastnosti keramičnih kompozitov pri temperaturi okolice in pri zračnem tlaku - Ugotavljanje elastičnih lastnosti z ultrazvokom (ISO 18610:2016)

General Information

• Status: Published
• Publication Date: 19-Jan-2021
• Withdrawal Date: 30-Jul-2021
• 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: 20-Jan-2021
• Due Date: 06-Sep-2021
• Completion Date: 20-Jan-2021
• Ref Project: SIST EN ISO 18610:2021 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at ambient temperature in air atmospheric pressure - Determination of elastic properties by ultrasonic technique (ISO 18610:2016)

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2021
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske
lastnosti keramičnih kompozitov pri temperaturi okolice in pri zračnem tlaku -
Ugotavljanje elastičnih lastnosti z ultrazvokom (ISO 18610:2016)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at ambient temperature in air atmospheric pressure -
Determination of elastic properties by ultrasonic technique (ISO 18610:2016)
Hochleistungskeramik - Mechanische Eigenschaften von keramischen
Verbundwerkstoffen bei Raumtemperatur - Bestimmung der elastischen Eigenschaften
durch eine Ultraschallmethode (ISO 18610:2016)
Céramiques techniques (céramiques avancées, céramiques techniques avancées) -
Propriétés mécaniques des céramiques composites à température ambiante sous air à
pression atmosphérique - Détermination des propriétés élastiques par méthode
ultrasonore (ISO 18610:2016)
Ta slovenski standard je istoveten z: EN ISO 18610:2021
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18610
EUROPEAN STANDARD
NORME EUROPÉENNE
January 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 elastic properties by ultrasonic
technique (ISO 18610:2016)
Céramiques techniques (céramiques avancées, Hochleistungskeramik - Mechanische Eigenschaften
céramiques techniques avancées) - Propriétés von keramischen Verbundwerkstoffen bei
mécaniques des céramiques composites à température Raumtemperatur - Bestimmung der elastischen
ambiante sous air à pression atmosphérique - Eigenschaften durch eine Ultraschallmethode (ISO
Détermination des propriétés élastiques par méthode 18610:2016)
ultrasonore (ISO 18610:2016)
This European Standard was approved by CEN on 20 December 2020.

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 18610:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 18610:2016 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 18610:2021
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 July 2021, and conflicting national standards shall be
withdrawn at the latest by July 2021.
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.
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 18610:2016 has been approved by CEN as EN ISO 18610:2021 without any modification.

INTERNATIONAL ISO
STANDARD 18610
First edition
2016-09-15
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Mechanical properties of ceramic
composites at ambient temperature
in air atmospheric pressure —
Determination of elastic properties by
ultrasonic technique
Céramiques techniques (céramiques avancées, céramiques techniques
avancées) — Propriétés mécaniques des céramiques composites
à température ambiante sous air à pression atmosphérique —
Détermination des propriétés élastiques par méthode ultrasonore
Reference number
ISO 18610:2016(E)
©
ISO 2016
ISO 18610:2016(E)
© ISO 2016, Published in Switzerland
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
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ii © ISO 2016 – All rights reserved

ISO 18610:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 5
5 Significance and use . 6
6 Test equipment. 7
6.1 Immersion tank with temperature measurement device . 7
6.2 Holder of the probes and test object . 7
6.3 Probes . 7
6.4 Pulse generator . 7
6.5 Signal display and recording system . 7
7 Test object . 7
8 Test object preparation . 8
9 Test procedure . 8
9.1 Choice of frequency . 8
9.2 Establishment of the test temperature . 9
9.3 Reference test without test object . 9
9.4 Measurement with the test object . 9
9.4.1 Determination of the bulk density and thickness . 9
9.4.2 Mounting of the test object . 9
9.4.3 Acquisition of different angles of incidence . 9
10 Calculation .10
10.1 Delay .10
10.2 Calculation of the propagation velocities .10
10.3 Calculation of the refracted angle, θ .10
r
10.4 Identification of the elastic constants, C .10
ij
10.4.1 Basic considerations .10
10.4.2 Calculation of C .12
10.4.3 Calculation of C , C and C .12
22 23 44
10.4.4 Calculation of C , C and C .12
11 13 55
10.4.5 Calculation of C and C .12
12 66
10.5 Polar plots of the velocity curves .13
10.6 Calculation of the quadratic deviation and the confidence interval .14
10.7 Calculation of the engineering constants .14
11 Test validity .15
11.1 Measurements .15
11.2 Criterion of validity for the reliability of the C components .15
ij
12 Test report .15
Annex A (informative) Example of a presentation of the results for a material with
orthotropic symmetry .17
Bibliography .
...