ISO 19622:2018

INTERNATIONAL ISO
STANDARD 19622
First edition
2018-04
Fine ceramics (advanced ceramics,
advanced technical ceramics) — Test
method for piezoelectric constant d
of piezoelectric ceramics by direct
quasi-static method
Céramiques techniques (céramiques avancées, céramiques techniques
avancées) — Méthode d’essai pour déterminer la constante
piézoélectrique d des céramiques piézoélectriques par méthode
quasi-statique directe
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measurement principle . 2
5 Equipment and instruments . 3
5.1 Test equipment . 3
5.2 Probes . 3
6 Specimens . 4
6.1 Standard specimens . 4
6.2 Shape and size of specimens . 4
7 Test method . 4
7.1 Test environment . 4
7.2 Test conditions . 4
8 Calculation . 5
9 Report of test results . 5
Bibliography . 6
Foreword
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This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
iv © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 19622:2018(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for piezoelectric constant d of
piezoelectric ceramics by direct quasi-static method
1 Scope
This document specifies how to measure the piezoelectric constant d of piezoelectric ceramics using
a direct quasi-static method (d33 meter method, Berlincourt method).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 20507, Fine ceramics (advanced ceramics, advanced technical ceramics) — Vocabulary
IEC 60483, Guide to dynamic measurements of piezoelectric ceramics with high electromechanical coupling
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 20507 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
piezoelectric constant
d
part of the piezoelectric fundamental equation (d-form):
E
S = s T + dE (inverse piezoelectric effect) (1)
T
D = dT + ε E (direct piezoelectric effect) (2)
where
S is strain;
T is stress, in N/m ;
E is electric field (strength), in V/m;
D is electric flux density, in C/m ;
T
ε is free permittivity (assuming constant T), in F/m;
E 2
s is elastic compliance (assuming constant E), in m /N.
The piezoelectric constant d in Formula (1) expresses the inverse piezoelectric effect, while d in
Formula (2) expresses the direct piezoelectric effect. The unit of d in each equation is [m/V] and [C/N],
respectively, and they are
...